Ford Fusion Manuals

Ford Fusion: Front Seats / Front Seats. Diagnosis and Testing

DTC Chart: DDM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  DDM DTC Chart


  DTC Description Action
B1C03:23 Memory #1 Switch: Signal Stuck Low   GO to Pinpoint Test G
B1C04:23 Memory #2 Switch: Signal Stuck Low   GO to Pinpoint Test G
All other Diagnostic Trouble Codes (DTCs) -  
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).

DTC Chart: DSM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  DSM DTC Chart


  DTC Description Action
B1298:24 Steering Column Adjust Up Switch: Signal Stuck High  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1299:24 Steering Column Adjust Down Switch: Signal Stuck High  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A1:24 Steering Column Adjust Out Switch: Signal Stuck High  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A2:24 Steering Column Adjust In Switch: Signal Stuck High  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A7:11 Steering Column Tilt Sensor A: Circuit Short To Ground  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A7:12 Steering Column Tilt Sensor A: Circuit Short To Battery  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A8:11 Steering Column Telescope Sensor A: Circuit Short To Ground  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B12A8:12 Steering Column Telescope Sensor A: Circuit Short To Battery  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:09 Steering Column Tilt Motor: Component Failure  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:11 Steering Column Tilt Motor: Circuit Short To Ground  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:12 Steering Column Tilt Motor: Circuit Short To Battery  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:13 Steering Column Tilt Motor: Circuit Open  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:1A Steering Column Tilt Motor: Circuit Resistance Below Threshold  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B1375:31 Steering Column Tilt Motor: No Signal  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:09 Steering Column Telescope Motor: Component Failure  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:11 Steering Column Telescope Motor: Circuit Short To Ground  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:12 Steering Column Telescope Motor: Circuit Short To Battery  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:13 Steering Column Telescope Motor: Circuit Open  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:1A Steering Column Telescope Motor: Circuit Resistance Below Threshold  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B137E:31 Steering Column Telescope Motor: No Signal  
REFER to: Steering Column (211-04 Steering Column, Diagnosis and Testing).
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High   GO to Pinpoint Test F
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High   GO to Pinpoint Test F
B14CB:11 Seat Height Rear Position Feedback: Circuit Short To Ground   GO to Pinpoint Test G
B14CB:12 Seat Height Rear Position Feedback: Circuit Short To Battery   GO to Pinpoint Test G
B14CE:09 Seat Horizontal Motor Output: Component Failure   GO to Pinpoint Test F
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground   GO to Pinpoint Test F
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery   GO to Pinpoint Test F
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test F
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test F
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test F
B14CE:31 Seat Horizontal Motor Output: No Signal   GO to Pinpoint Test G
B14CF:09 Seat Recline Motor Output: Component Failure   GO to Pinpoint Test F
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground   GO to Pinpoint Test F
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery   GO to Pinpoint Test F
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test F
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test F
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test F
B14CF:31 Seat Recline Motor Output: No Signal   GO to Pinpoint Test G
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure   GO to Pinpoint Test F
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground   GO to Pinpoint Test F
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery   GO to Pinpoint Test F
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test F
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test F
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test F
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal   GO to Pinpoint Test G
B14D2:09 Seat Height Rear Motor Output: Component Failure   GO to Pinpoint Test F
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground   GO to Pinpoint Test F
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery   GO to Pinpoint Test F
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test F
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test F
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test F
B14D2:31 Seat Height Rear Motor Output: No Signal   GO to Pinpoint Test G
B1B89:11 Seat Slide Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test G
B1B89:12 Seat Slide Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test G
B1B91:11 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test G
B1B91:12 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test G
B1B93:11 Seat Recline Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test G
B1B93:12 Seat Recline Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test G
B1B96:24 Seat Slide Forward Switch: Signal Stuck High   GO to Pinpoint Test F
B1B97:24 Seat Slide Backward Switch: Signal Stuck High   GO to Pinpoint Test F
B1B98:24 Seat Tilt Up Switch: Signal Stuck High   GO to Pinpoint Test F
B1B99:24 Seat Tilt Down Switch: Signal Stuck High   GO to Pinpoint Test F
B1C00:24 Seat Recline Up Switch: Signal Stuck High   GO to Pinpoint Test F
B1C01:24 Seat Recline Down Switch: Signal Stuck High   GO to Pinpoint Test F
U0100:00 Lost Communication with ECM/PCM "A": No Sub Type Information   GO to Pinpoint Test V
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test L
U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information   GO to Pinpoint Test Y
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information DIAGNOSE any other related DSM Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch.

Using a diagnostic scan tool, CARRY OUT PMI on the DSM. REPEAT the self-test and VERIFY successful PMI. CLEAR the Diagnostic Trouble Codes (DTCs).
U3000:49 Control Module: Internal Electronic Failure INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Chart: FCIM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  FCIM DTC Chart


  DTC Description Action
B1034:11 Left Front Seat Heater Element: Circuit Short To Ground   GO to Pinpoint Test J
B1034:12 Left Front Seat Heater Element: Circuit Short To Battery   GO to Pinpoint Test J
B1034:13 Left Front Seat Heater Element: Circuit Open   GO to Pinpoint Test J
B1036:11 Right Front Seat Heater Element: Circuit Short To Ground   GO to Pinpoint Test K
B1036:12 Right Front Seat Heater Element: Circuit Short To Battery   GO to Pinpoint Test K
B1036:13 Right Front Seat Heater Element: Circuit Open   GO to Pinpoint Test K
B1038:11 Left Front Seat Heater Sensor: Circuit Short To Ground   GO to Pinpoint Test J
B1038:15 Left Front Seat Heater Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test J
B103A:11 Right Front Seat Heater Sensor: Circuit Short To Ground   GO to Pinpoint Test K
B103A:15 Right Front Seat Heater Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test K
All other Diagnostic Trouble Codes (DTCs) -   Refer to the appropriate section in Group 415 for the procedure.

DTC Chart: SCME

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  SCME DTC Chart


  DTC Description Action
B1151:4B Passenger Seat Cushion: Over Temperature   GO to Pinpoint Test P
B1152:4B Passenger Seat Back: Over Temperature   GO to Pinpoint Test Q
B1153:4B Driver Seat Cushion: Over Temperature   GO to Pinpoint Test N
B1154:4B Driver Seat Back: Over Temperature   GO to Pinpoint Test O
B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure   GO to Pinpoint Test R
B1208:98 Driver Seat Cushion Temperature Sensor: Component or System Over Temperature   GO to Pinpoint Test R
B1209:01 Driver Seat Back Temperature Sensor: General Electrical Failure   GO to Pinpoint Test T
B1209:98 Driver Seat Back Temperature Sensor: Component or System Over Temperature   GO to Pinpoint Test T
B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure   GO to Pinpoint Test S
B120A:98 Passenger Seat Cushion Temperature Sensor: Component or System Over Temperature   GO to Pinpoint Test S
B120B:01 Passenger Seat Back Temperature Sensor: General Electrical Failure   GO to Pinpoint Test U
B120B:98 Passenger Seat Back Temperature Sensor: Component or System Over Temperature   GO to Pinpoint Test U
B14B9:01 Driver Seat Cushion Thermal Electric Device: General Electrical Failure   GO to Pinpoint Test R
B14B9:11 Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test R
B14B9:12 Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test R
B14B9:13 Driver Seat Cushion Thermal Electric Device: Circuit Open   GO to Pinpoint Test R
B14B9:1A Driver Seat Cushion Thermal Electric Device: Circuit Resistance Below Threshold   GO to Pinpoint Test R
B14BA:01 Driver Seat Back Thermal Electric Device: General Electrical Failure   GO to Pinpoint Test T
B14BA:11 Driver Seat Back Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test T
B14BA:12 Driver Seat Back Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test T
B14BA:13 Driver Seat Back Thermal Electric Device: Circuit Open   GO to Pinpoint Test T
B14BA:1A Driver Seat Back Thermal Electric Device: Circuit Resistance Below Threshold   GO to Pinpoint Test T
B14BB:01 Passenger Seat Cushion Thermal Electric Device: General Electrical Failure   GO to Pinpoint Test S
B14BB:11 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test S
B14BB:12 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test S
B14BB:13 Passenger Seat Cushion Thermal Electric Device: Circuit Open   GO to Pinpoint Test S
B14BB:1A Passenger Seat Cushion Thermal Electric Device: Circuit Resistance Below Threshold   GO to Pinpoint Test S
B14BC:01 Passenger Seat Back Thermal Electric Device: General Electrical Failure   GO to Pinpoint Test U
B14BC:11 Passenger Seat Back Thermal Electric Device: Circuit Short To Ground   GO to Pinpoint Test U
B14BC:12 Passenger Seat Back Thermal Electric Device: Circuit Short To Battery   GO to Pinpoint Test U
B14BC:13 Passenger Seat Back Thermal Electric Device: Circuit Open   GO to Pinpoint Test U
B14BC:1A Passenger Seat Back Thermal Electric Device: Circuit Resistance Below Threshold   GO to Pinpoint Test U
B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test R
B14BE:11 Driver Seat Back Blower: Circuit Short To Ground   GO to Pinpoint Test T
B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test S
B14C2:11 Passenger Seat Back Blower: Circuit Short To Ground   GO to Pinpoint Test U
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test W
U0257:00 Lost Communication with Front Controls / Display Interface Module: No Sub Type Information   GO to Pinpoint Test X
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information DIAGNOSE any other related DSM Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost.

Using a diagnostic scan tool, CARRY OUT PMI on the SCME. REPEAT the self-test and VERIFY successful PMI. CLEAR the Diagnostic Trouble Codes (DTCs).
U3000:49 Control Module: Internal Electronic Failure INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

Symptom Chart

Symptom Chart: Front Seats

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Possible Sources Actions
No communication with the DSM
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the DDM
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the FCIM
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCME
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The power seat is inoperative or does not operate correctly — driver, without memory
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
The power seat is inoperative or does not operate correctly — passenger, without power lumbar
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test B
The power seat is inoperative or does not operate correctly — passenger, with power lumbar
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
The power lumbar is inoperative — driver
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test D
The power lumbar is inoperative — passenger
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test E
The memory seat does not operate horizontally/vertically/recline using the seat control switch
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test F
The memory seat does not operate using the memory SET switch
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G
The memory seat moves in one-second intervals
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G
The memory seat does not move to the correct memory position
  • Refer to the Pinpoint Test
  • CARRY OUT the DSM self-test and RETRIEVE the Diagnostic Trouble Codes (DTCs). REFER to the DSM DTC Chart.
The memory seat does not operate when using the RKE transmitter
  • Refer to the Pinpoint Test
  • VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to Owner's Literature or
    REFER to: Handles, Locks, Latches and Entry Systems - Overview (501-14 Handles, Locks, Latches and Entry Systems, Description and Operation).
    for information on associating a RKE transmitter. CARRY OUT the DSM self-test and REFER to the DSM DTC Chart to diagnose any Diagnostic Trouble Codes (DTCs) retrieved.
Easy entry/easy exit is inoperative/does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test H
The heated seats are inoperative — driver and passenger
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test I
The heated seat is inoperative/does not operate correctly — driver
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test J
The heated seat is inoperative/does not operate correctly — passenger
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K
One or both climate controlled seats are inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test M
A single climate controlled seat does not operate correctly — exhibits poor airflow or performance
  • Excessive sunload or extreme cabin temperatures
  • Incorrectly installed backrest or cushion blower motor
  • Airflow blockage
  • Disconnected air duct
  • CARRY OUT the SCME self-test and retrieve any Diagnostic Trouble Codes (DTCs).
    • If any Diagnostic Trouble Codes (DTCs) are present, REFER to the SCME DTC Chart.
    • If no Diagnostic Trouble Codes (DTCs) are present, CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (backrest or cushion blower motor, air duct and foam pad) and CHECK for airflow restrictions (backrest or cushion blower motor inlets and outlets, filters and ducts) and REPAIR as needed. RETEST the system for normal operation.

Pinpoint Test(s)

The Power Seat is Inoperative or Does Not Operate Correctly — Driver, Without Memory


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 74 (30A) is OK.

PINPOINT TEST A : THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — DRIVER, WITHOUT MEMORY
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
A1 CHECK THE SEAT OPERATION
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Attempt to operate the seat in all directions.

Is the seat inoperative in all directions?
Yes GO to A2
No If only the recliner motor is inoperative, GO to A4
If only the horizontal motor is inoperative, GO to A6
If only the front height motor is inoperative, GO to A8
If only the rear height motor is inoperative, GO to A10

A2 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C3387-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to A3
No VERIFY BJB fuse 74 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to A12

A3 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C3387-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit. GO to A12

A4 CHECK FOR VOLTAGE TO THE SEAT RECLINER MOTOR
  • Ignition OFF.
  • Disconnect: Driver Seat Recliner Motor C3187.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the recline switch forward and rearward, measure:
    Positive Lead Measurement / Action Negative Lead
      C3187-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3187-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver front seat backrest.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A5

A5 CHECK THE SEAT RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C3387-7 Ford Fusion. Front Seats. Diagnosis and Testing   C3187-3
      C3387-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3187-1

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit in question. GO to A12

A6 CHECK FOR VOLTAGE TO THE SEAT HORIZONTAL MOTOR
  • Disconnect: Driver Seat Horizontal Motor C362.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-1 Ford Fusion. Front Seats. Diagnosis and Testing   C362-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A7

A7 CHECK THE SEAT HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-14 Ford Fusion. Front Seats. Diagnosis and Testing   C362-3
      C3387-15 Ford Fusion. Front Seats. Diagnosis and Testing   C362-1

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit in question. GO to A12

A8 CHECK FOR VOLTAGE TO THE SEAT FRONT HEIGHT MOTOR
  • Disconnect: Driver Seat Front Height Motor C382.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the front height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1 Ford Fusion. Front Seats. Diagnosis and Testing   C382-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A9

A9 CHECK THE SEAT FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-16 Ford Fusion. Front Seats. Diagnosis and Testing   C382-3
      C3387-17 Ford Fusion. Front Seats. Diagnosis and Testing   C382-1

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit in question. GO to A12

A10 CHECK FOR VOLTAGE TO THE SEAT REAR HEIGHT MOTOR
  • Disconnect: Driver Seat Rear Height Motor C363.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the rear height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-1 Ford Fusion. Front Seats. Diagnosis and Testing   C363-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A11

A11 CHECK THE SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-12 Ford Fusion. Front Seats. Diagnosis and Testing   C363-3
      C3387-13 Ford Fusion. Front Seats. Diagnosis and Testing   C363-1

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit in question. GO to A12

A12 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Power Seat is Inoperative or Does Not Operate Correctly — Passenger, Without Power Lumbar


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 70 (30A) is OK.

PINPOINT TEST B : THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — PASSENGER, WITHOUT POWER LUMBAR
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
B1 CHECK THE SEAT OPERATION
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Attempt to operate the passenger seat in all directions.

Is the seat inoperative in all directions?
Yes GO to B2
No If only the recliner motor is inoperative, GO to B4
If only the horizontal motor is inoperative, GO to B6
If only the height motor is inoperative, GO to B8

B2 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to B3
No VERIFY BJB fuse 70 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to B10

B3 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to B10
No REPAIR the circuit. GO to B10

B4 CHECK FOR VOLTAGE TO THE SEAT RECLINER MOTOR
  • Ignition OFF.
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the recline switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger front seat backrest.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to B10
No GO to B5

B5 CHECK THE SEAT RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-3
      C3388-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to B10
No REPAIR the circuit in question. GO to B10

B6 CHECK FOR VOLTAGE TO THE SEAT HORIZONTAL MOTOR
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-1 Ford Fusion. Front Seats. Diagnosis and Testing   C332-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to B10
No GO to B7

B7 CHECK THE SEAT HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-17 Ford Fusion. Front Seats. Diagnosis and Testing   C332-3
      C3388-16 Ford Fusion. Front Seats. Diagnosis and Testing   C332-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to B10
No REPAIR the circuit in question. GO to B10

B8 CHECK FOR VOLTAGE TO THE SEAT HEIGHT MOTOR
  • Ignition OFF.
  • Disconnect: Passenger Seat Height Motor C330.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-1 Ford Fusion. Front Seats. Diagnosis and Testing   C330-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger front seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B10
No GO to B9

B9 CHECK THE SEAT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-14 Ford Fusion. Front Seats. Diagnosis and Testing   C330-3
      C3388-15 Ford Fusion. Front Seats. Diagnosis and Testing   C330-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to B10
No REPAIR the circuit in question. GO to B10

B10 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Power Seat is Inoperative or Does Not Operate Correctly — Passenger, With Power Lumbar


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 70 (30A) is OK.

PINPOINT TEST C : THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — PASSENGER, WITH POWER LUMBAR
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
C1 CHECK THE SEAT OPERATION
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Attempt to operate the seat in all directions.

Is the seat inoperative in all directions?
Yes GO to C2
No If only the recliner motor is inoperative, GO to C4
If only the horizontal motor is inoperative, GO to C6
If only the front height motor is inoperative, GO to C8
If only the rear height motor is inoperative, GO to C10

C2 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to C3
No VERIFY BJB fuse 70 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to C12

C3 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to C12
No REPAIR the circuit. GO to C12

C4 CHECK FOR VOLTAGE TO THE SEAT RECLINER MOTOR
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the recline switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger front seat backrest.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to C12
No GO to C5

C5 CHECK THE SEAT RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-3
      C3388-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3189-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to C12
No REPAIR the circuit in question. GO to C12

C6 CHECK FOR VOLTAGE TO THE SEAT HORIZONTAL MOTOR
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-1 Ford Fusion. Front Seats. Diagnosis and Testing   C332-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to C12
No GO to C7

C7 CHECK THE SEAT HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-17 Ford Fusion. Front Seats. Diagnosis and Testing   C332-3
      C3388-16 Ford Fusion. Front Seats. Diagnosis and Testing   C332-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to C12
No REPAIR the circuit in question. GO to C12

C8 CHECK FOR VOLTAGE TO THE SEAT FRONT HEIGHT MOTOR
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the front height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3074-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to C12
No GO to C9

C9 CHECK THE SEAT FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-15 Ford Fusion. Front Seats. Diagnosis and Testing   C3074-3
      C3388-14 Ford Fusion. Front Seats. Diagnosis and Testing   C3074-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to C12
No REPAIR the circuit in question. GO to C12

C10 CHECK FOR VOLTAGE TO THE SEAT REAR HEIGHT MOTOR
  • Disconnect: Passenger Seat Rear Height Motor C330.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the rear height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-1 Ford Fusion. Front Seats. Diagnosis and Testing   C330-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to C12
No GO to C11

C11 CHECK THE SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-18 Ford Fusion. Front Seats. Diagnosis and Testing   C330-3
      C3388-19 Ford Fusion. Front Seats. Diagnosis and Testing   C330-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to C12
No REPAIR the circuit in question. GO to C12

C12 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Power Lumbar is Inoperative — Driver


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly

PINPOINT TEST D : THE POWER LUMBAR IS INOPERATIVE — DRIVER
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
D1 CHECK FOR VOLTAGE TO THE SEAT LUMBAR MOTOR
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Driver Seat Lumbar Motor C3215.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the lumbar switch in both directions, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3215-A Ford Fusion. Front Seats. Diagnosis and Testing   C3215-B

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to D3
No GO to D2

D2 CHECK THE SEAT LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-2 Ford Fusion. Front Seats. Diagnosis and Testing   C3215-B
      C3387-6 Ford Fusion. Front Seats. Diagnosis and Testing   C3215-A

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to D3
No REPAIR the circuit in question. GO to D3

D3 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Power Lumbar is Inoperative — Passenger


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly

PINPOINT TEST E : THE POWER LUMBAR IS INOPERATIVE — PASSENGER
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
E1 CHECK FOR VOLTAGE TO THE SEAT LUMBAR MOTOR
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: Passenger Seat Lumbar Motor C3216.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the lumbar switch in both directions, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3216-A Ford Fusion. Front Seats. Diagnosis and Testing   C3216-B

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to E3
No GO to E2

E2 CHECK THE SEAT LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-20 Ford Fusion. Front Seats. Diagnosis and Testing   C3216-B
      C3388-2 Ford Fusion. Front Seats. Diagnosis and Testing   C3216-A

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to E3
No REPAIR the circuit in question. GO to E3

E3 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Memory Seat Does Not Operate Horizontally/Vertically/Recline Using the Seat Control Switch


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC.
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC.
B14CE:09 Seat Horizontal Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:09 Seat Recline Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:09 Seat Height Rear Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1B96:24 Seat Slide Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.
B1B97:24 Seat Slide Backward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.
B1B98:24 Seat Tilt Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.
B1B99:24 Seat Tilt Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.
B1C00:24 Seat Recline Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.
B1C01:24 Seat Recline Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC.

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 74 (30A) is OK.

PINPOINT TEST F : THE MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
F1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to F3
For DTC B14CE:31, B14CF:31, B14D0:31 or B14D2:31, GO to Pinpoint Test G
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to F9
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart.
No GO to F2

F2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Front Tilt Switch (Down) (FTLT_SW_DN)
    • Front Tilt Switch (Up) (FTLT_SW_UP)
    • Recline Switch (Down) (REC_SW_DWN)
    • Recline Switch (Up) (REC_SW_UP)
    • Rear Tilt Switch (Down) (RTLT_SW_DN)
    • Rear Tilt Switch (Up) (RTLT_SW_UP)
    • Slide Switch (Backward) (SLIDE_SW_B)
    • Slide Switch (Forward) (SLIDE_SW_F)

Do the PID states agree with the switch positions?
Yes GO to F9
No GO to F3

F3 CHECK THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C3387.
  • Carry out the component test on the seat control switch.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the seat control switch pass the component test?
Yes GO to F4
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

F4 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to F5
No REPAIR the circuit. GO to F37

F5 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes GO to F6
No REPAIR the circuit. GO to F37

F6 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR A SHORT TO VOLTAGE
  • Disconnect: DSM C341A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-17 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-13 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-14 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No GO to F7

F7 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-17 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-13 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-14 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3387-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F8
No REPAIR the affected circuit. GO to F37

F8 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-17 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-7
      C3387-16 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-8
      C3387-13 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-5
      C3387-12 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-6
      C3387-14 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-9
      C3387-15 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-10
      C3387-9 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-4
      C3387-7 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-3

Are the resistances greater than 10,000 ohms?
Yes GO to F36
No REPAIR the affected circuit. GO to F37

F9 CHECK THE SEAT TRACK OPERATION USING DSM (DRIVER FRONT SEAT MODULE) ACTIVE COMMANDS AND PARAMETER IDENTIFICATIONS (PIDS)
  • Toggle the following DSM active commands ON and OFF using a diagnostic scan tool while monitoring the seat movement:
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
    • Recline Motor Backward (RECL_BWD)
    • Recline Motor Forward (RECL_FWD)

Does the driver seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No If no seat movement occurs, GO to F10
If no front vertical seat movement occurs, GO to F12
If no rear vertical seat movement occurs, GO to F18
If no horizontal seat movement occurs, GO to F24
If no recline seat movement occurs, GO to F30

F10 CHECK FOR VOLTAGE TO THE DSM (DRIVER FRONT SEAT MODULE)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341B-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the voltages greater than 11 volts?
Yes GO to F11
No REPAIR the circuit. GO to F37

F11 CHECK THE DSM (DRIVER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN
  • Disconnect: DSM C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341C-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances less than 3 ohms?
Yes GO to F36
No REPAIR the affected circuit. GO to F37

F12 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes GO to F13
No GO to F14

F13 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37

F14 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F16
No GO to F15

F15 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F16 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1 Ford Fusion. Front Seats. Diagnosis and Testing   C382-1
      C341F-2 Ford Fusion. Front Seats. Diagnosis and Testing   C382-3

Are the resistances less than 3 ohms?
Yes GO to F17
No REPAIR the affected circuit. GO to F37

F17 CHECK THE FRONT HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: Driver Seat Front Height Motor C382.
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands FRONT_UP and FRONT_DOWN on and off and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1 Ford Fusion. Front Seats. Diagnosis and Testing   C382-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F18 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341C-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes GO to F19
No GO to F20

F19 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341C-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37

F20 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341C-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F22
No GO to F21

F21 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341C-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F22 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1 Ford Fusion. Front Seats. Diagnosis and Testing   C363-1
      C341C-2 Ford Fusion. Front Seats. Diagnosis and Testing   C363-3

Are the resistances less than 3 ohms?
Yes GO to F23
No REPAIR the affected circuit. GO to F37

F23 CHECK THE REAR HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: Driver Seat Rear Height Motor C363.
  • Connect: DSM C341A and C341C.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands H_MOT_U and H_MOT_D on and off and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-1 Ford Fusion. Front Seats. Diagnosis and Testing   C363-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F24 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes GO to F25
No GO to F26

F25 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37

F26 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F28
No GO to F27

F27 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341F-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F28 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5 Ford Fusion. Front Seats. Diagnosis and Testing   C362-3
      C341F-6 Ford Fusion. Front Seats. Diagnosis and Testing   C362-1

Are the resistances less than 3 ohms?
Yes GO to F29
No REPAIR the affected circuit. GO to F37

F29 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: Driver Seat Horizontal Motor C362.
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands HORZ_FWD and HORZ_BWD on and off and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-1 Ford Fusion. Front Seats. Diagnosis and Testing   C362-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F30 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341B-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes GO to F31
No GO to F32

F31 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341B-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F37

F32 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341B-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F34
No GO to F33

F33 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341B-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F34 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3187-1
      C341B-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3187-3

Are the resistances less than 3 ohms?
Yes GO to F35
No REPAIR the affected circuit. GO to F37

F35 CHECK THE RECLINER MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: Driver Seat Recliner Motor C3187.
  • Connect: DSM C341A and C341B.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Recline Motor Forward (RECL_FWD)
    • Recline Motor Backward (RECL_BWD)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands RECL_FWD and RECL_BWD on and off and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1 Ford Fusion. Front Seats. Diagnosis and Testing   C382-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F36 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to F37
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to F37

F37 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Memory Seat Does Not Operate Using the Memory SET Switch


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DSM DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B14CB:11 Seat Height Rear Position Feedback: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CB:12 Seat Height Rear Position Feedback: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CE:31 Seat Horizontal Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14CF:31 Seat Recline Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14D2:31 Seat Height Rear Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B1B89:11 Seat Slide Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B89:12 Seat Slide Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B91:11 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B91:12 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B93:11 Seat Recline Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B93:12 Seat Recline Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.

  DDM DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1C03:23 Memory #1 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1C04:23 Memory #2 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Causes

  • Wiring, terminals or connectors
  • Memory SET switch
  • Missing ignition status information
  • Horizontal motor
  • Seat track
  • Seat backrest

PINPOINT TEST G : THE MEMORY SEAT DOES NOT OPERATE USING THE MEMORY SET SWITCH
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
G1 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the DSM IGN_FINAL PID while cycling the ignition from ON to OFF and back to ON.

Do the PID states agree?
Yes GO to G2
No To diagnose no power in ON,
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

G2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Attempt to operate the memory seat in all directions.
  • Place the memory seat in the middle of each range of travel.
  • Using a diagnostic scan tool, perform self-test on the DSM and DDM. If the diagnostic scan tool does not communicate to the DSM and/or DDM,
    REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1C03:23 or B1C04:23, GO to G4
For DTC B1B91:11, B1B91:12 or B14D0:31, GO to G10
For DTC B14CB:11, B14CB:12 or B14D2:31, GO to G13
For DTC B1B89:11, B1B89:12 or B14CE:31, GO to G16
For DTC B1B93:11, B1B93:12 or B14CF:31, GO to G19
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM or DDM DTC Chart(s) in this section.
No If a seat axis only moves on one-second intervals, GO to G10
Otherwise, GO to G3

G3 MONITOR DSM (DRIVER FRONT SEAT MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS
  • While activating the memory recall 1 and 2 buttons, monitor the following DSM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Set Memory 1 (MEMORY_1).
    • Set Memory 2 (MEMORY_2).

Do the PID values agree with the switch button positions?
Yes GO to G9
No GO to G4

G4 CHECK THE MEMORY SET SWITCH
  • Ignition OFF.
  • Disconnect: Driver Door Lock Control Switch C541.
  • While pressing and releasing the indicated memory recall button 1, measure the component side resistance of the driver door lock control switch using the following table:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C541, pin 5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C541, pin 6, Component Side
  • While pressing and releasing the indicated memory recall button 2, measure the component side resistance of the driver door lock control switch using the following table:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C541, pin 4, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C541, pin 6, Component Side

Are the resistances less than 20 ohms with the switch buttons pressed and greater than 10,000 ohms with the switch buttons released?
Yes GO to G5
No INSTALL a new door lock control switch.
REFER to: Door Lock Control Switch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

G5 CHECK THE MEMORY SET SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C541-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 3 ohms?
Yes GO to G6
No REPAIR the circuit.

G6 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE
  • Disconnect: DDM C501B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C541-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C541-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to G7

G7 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C541-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C541-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to G8
No REPAIR the affected circuit.

G8 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C541-4 Ford Fusion. Front Seats. Diagnosis and Testing   C501B-3
      C541-5 Ford Fusion. Front Seats. Diagnosis and Testing   C501B-1

Are the resistances less than 3 ohms?
Yes GO to G22
No REPAIR the affected circuit.

G9 CHECK THE SEAT TRACK OPERATION USING DSM (DRIVER FRONT SEAT MODULE) ACTIVE COMMANDS AND PARAMETER IDENTIFICATIONS (PIDS)
  • Toggle the following DSM active commands ON and OFF using a diagnostic scan tool while monitoring the seat movement:
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
    • Recline Motor Backward (RECL_BWD)
    • Recline Motor Forward (RECL_FWD)

Does the driver seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No DIAGNOSE the inoperative seat. GO to Pinpoint Test F

G10 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C382-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G23
No GO to G11

G11 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C382-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G12
No REPAIR the affected circuit. GO to G23

G12 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2 Ford Fusion. Front Seats. Diagnosis and Testing   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-19

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G23
No REPAIR the affected circuit. GO to G23

G13 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C363-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to G23
No GO to G14

G14 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C363-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G15
No REPAIR the affected circuit. GO to G23

G15 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-18
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G23
No REPAIR the affected circuit. GO to G23

G16 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C362-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to G23
No GO to G17

G17 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C362-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G18
No REPAIR the affected circuit. GO to G23

G18 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2 Ford Fusion. Front Seats. Diagnosis and Testing   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-20

Are the resistances less than 3 ohms?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to G23
No REPAIR the affected circuit. GO to G23

G19 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3187-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G23
No GO to G20

G20 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C3187-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G21
No REPAIR the affected circuit. GO to G23

G21 CHECK THE RECLINER SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2 Ford Fusion. Front Seats. Diagnosis and Testing   C341A-17
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat backrest frame.
REFER to: Front Seat Backrest (501-10A Front Seats, Removal and Installation).
GO to G23
No REPAIR the affected circuit. GO to G23

G22 CHECK THE DDM (DRIVER DOOR MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DDM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DDM connectors. Make sure they seat and latch correctly.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DDM.
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G23 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


Easy Entry/Easy Exit is Inoperative/Does Not Operate Correctly

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Easy entry/exit feature is not enabled
  • Missing ignition status information
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify the easy entry/exit feature is enabled in the message center. REFER to the Owner's Literature for information on programming vehicle settings in the message center.

PINPOINT TEST H : EASY ENTRY/EASY EXIT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
H1 CHECK THE DRIVER POWER SEAT OPERATION
  • Ignition ON.
  • Check the message center to verify the easy entry/exit feature is turned on.
  • Using the seat control switch, verify the driver power seat operates fully forward and backward.
  • Using a diagnostic scan tool, perform the DSM self-test.

Are any Diagnostic Trouble Codes (DTCs) received?
Yes REFER to the DSM DTC Chart.
No If disabled, ENABLE the easy entry/exit feature through the message center. REFER to the Owner's Literature. TEST the system for normal operation. If OK, INSTRUCT the customer on correct system operation. GO to H2

H2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the DSM IGN_FINAL PID while cycling the ignition from ON to OFF and back to ON.

Does the PID states match with ignition mode?
Yes INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No DIAGNOSE the ignition status concern.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).


The Heated Seats are Inoperative — Driver and Passenger


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • FCIM
  • FDIM (if equipped)

Visual Inspection and Diagnostic Pre-checks

  • Verify the BJB fuse 65 (20A)

PINPOINT TEST I : THE HEATED SEATS ARE INOPERATIVE — DRIVER AND PASSENGER
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
I1 CHECK FOR FCIM (FRONT CONTROLS INTERFACE MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform FCIM self-test.

Are any FCIM Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the FCIM DTC Chart.
No If equipped with heated seat buttons on a touchscreen, GO to I2
If not equipped with heated seat buttons on a touchscreen, GO to I3

I2 CHECK THE TOUCHSCREEN OPERATION
  • Start the engine.
  • Select each audio and climate control function using the touchscreen controls.

Do all touchscreen controls operate?
Yes GO to I3
No DIAGNOSE the inoperative touchscreen, Refer to the appropriate section in Group 415 for the procedure.

I3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: FCIM C2402B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2402B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to I4
No VERIFY BJB fuse 65 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

I4 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Left Front Seat Cushion Heater C3298.
  • Disconnect: FCIM C2402A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3 Ford Fusion. Front Seats. Diagnosis and Testing   C2402A-2

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the FCIM?
Yes GO to I5
No REPAIR the circuit. GO to I6

I5 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION
  • Disconnect and inspect all of the FCIM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (FCIM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
GO to I6
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to I6

I6 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors (if not previously re-connected).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Heated Seat is Inoperative/Does Not Operate Correctly — Driver


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1034:11 Left Front Seat Heater Element: Circuit Short To Ground Sets when the FCIM senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1034:12 Left Front Seat Heater Element: Circuit Short To Battery Sets when the FCIM senses the left front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1034:13 Left Front Seat Heater Element: Circuit Open Sets when the FCIM senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1038:11 Left Front Seat Heater Sensor: Circuit Short To Ground Sets when the FCIM senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1038:15 Left Front Seat Heater Sensor: Circuit Short To Battery or Open Sets when the FCIM senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • FCIM

PINPOINT TEST J : THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — DRIVER
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
J1 CHECK FOR FCIM (FRONT CONTROLS INTERFACE MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform FCIM self-test.

Are any FCIM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1034:11, B1034:12 or B1034:13, GO to J3
For DTC B1038:11 or B1038:15, GO to J5
For all other Diagnostic Trouble Codes (DTCs), Refer to the appropriate section in Group 415 for the procedure.
No If equipped with a touchscreen, GO to J2
If not equipped with a touchscreen, GO to J3

J2 CHECK THE TOUCHSCREEN OPERATION
  • Start the engine.
  • Select each audio and climate control function using the touchscreen controls.

Do all touchscreen controls operate?
Yes GO to J3
No DIAGNOSE the inoperative touchscreen, Refer to the appropriate section in Group 415 for the procedure.

J3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: FCIM C2402B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2402B-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to J4
No REPAIR the circuit.

J4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: FCIM C2402B (if not previously disconnected).
  • Disconnect: Left Front Seat Cushion Heater C3298.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-1 Ford Fusion. Front Seats. Diagnosis and Testing   C2402B-16

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the FCIM?
Yes GO to J8
No REPAIR the circuit. GO to J14

J5 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: FCIM C2402B.
  • Disconnect: Left Front Seat Cushion Heater C3298.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2 Ford Fusion. Front Seats. Diagnosis and Testing   C2402B-30

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the FCIM?
Yes GO to J6
No REPAIR the circuit. GO to J14

J6 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: FCIM C2402A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3 Ford Fusion. Front Seats. Diagnosis and Testing   C2402A-2

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the FCIM?
Yes GO to J7
No REPAIR the circuit. GO to J14

J7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to J14
No GO to J12

J8 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Front Seat Backrest Heater C365.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C365-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 0.5 ohms?
Yes GO to J9
No REPAIR the circuit. GO to J14

J9 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3298-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ground
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3298-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3298-4, Component Side

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to J10
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to J14

J10 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C365-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C365-2, Component Side

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to J11
No INSTALL a new driver seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to J14

J11 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-4 Ford Fusion. Front Seats. Diagnosis and Testing   C365-1

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the backrest heater mat?
Yes GO to J13
No REPAIR the circuit. GO to J14

J12 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3298-2, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ground
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3298-2, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3298-3, Component Side

Is the resistance between 300 ohms and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to J13
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to J14

J13 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the FCIM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIM connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (FCIM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
GO to J14
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to J14

J14 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors (if not previously re-connected).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


The Heated Seat is Inoperative/Does Not Operate Correctly — Passenger


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1036:11 Right Front Seat Heater Element: Circuit Short To Ground Sets when the FCIM senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1036:12 Right Front Seat Heater Element: Circuit Short To Battery Sets when the FCIM senses the right front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B1036:13 Right Front Seat Heater Element: Circuit Open Sets when the FCIM senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B103A:11 Right Front Seat Heater Sensor: Circuit Short To Ground Sets when the FCIM senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.
B103A:15 Right Front Seat Heater Sensor: Circuit Short To Battery or Open Sets when the FCIM senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the FCIM disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • FCIM

PINPOINT TEST K : THE HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — PASSENGER
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
K1 CHECK FOR FCIM (FRONT CONTROLS INTERFACE MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, perform FCIM self-test.

Are any FCIM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1036:11, B1036:12 or B1036:13, GO to K3
For DTC B103A:11 or B103A:15, GO to K5
For all other Diagnostic Trouble Codes (DTCs), Refer to the appropriate section in Group 415 for the procedure.
No If equipped with heated seat buttons on a touchscreen, GO to K2
If not equipped with heated seat buttons on a touchscreen, GO to K3

K2 CHECK THE TOUCHSCREEN OPERATION
  • Start the engine.
  • Select each audio and climate control function using the touchscreen controls.

Do all touchscreen controls operate?
Yes GO to K3
No DIAGNOSE the inoperative touchscreen, Refer to the appropriate section in Group 415 for the procedure.

K3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: FCIM C2402B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2402B-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to K4
No REPAIR the circuit.

K4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: FCIM C2402B (if not previously disconnected).
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1 Ford Fusion. Front Seats. Diagnosis and Testing   C2402B-17

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the FCIM?
Yes GO to K8
No REPAIR the circuit. GO to K14

K5 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: FCIM C2402B.
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2 Ford Fusion. Front Seats. Diagnosis and Testing   C2402B-15

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the FCIM?
Yes GO to K6
No REPAIR the circuit. GO to K14

K6 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: FCIM C2402A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3 Ford Fusion. Front Seats. Diagnosis and Testing   C2402A-2

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the FCIM?
Yes GO to K7
No REPAIR the circuit. GO to K14

K7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to K14
No GO to K12

K8 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Front Seat Backrest Heater C335.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C335-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance less than 0.5 ohms?
Yes GO to K9
No REPAIR the circuit. GO to K14

K9 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C334-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ground
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C334-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C334-4, Component Side

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to K10
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K14

K10 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C335-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C335-2, Component Side

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to K11
No INSTALL a new passenger seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K14

K11 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4 Ford Fusion. Front Seats. Diagnosis and Testing   C335-1

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the backrest heater mat?
Yes GO to K13
No REPAIR the circuit. GO to K14

K12 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C334-2, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ground
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C334-2, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C334-3, Component Side

Is the resistance between 300 ohms and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to K13
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K14

K13 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the FCIM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIM connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern,
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (FCIM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
GO to K14
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to K14

K14 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors (if not previously re-connected).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC: U0140:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM and the BCM communicate using the MS-CAN.


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0140:00 Lost Communication with Body Control Module: No Sub Type Information Set by the DSM whenever it has lost communication to the BCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • BCM

PINPOINT TEST L : DTC: U0140:00
L1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to L2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

L2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to L3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

L3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0140:00 still present?
Yes GO to L4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

L4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


One or Both Climate Controlled Seats are Inoperative


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • FDIM
  • FCIM
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 77 (30A) is OK.

PINPOINT TEST M : ONE OR BOTH CLIMATE CONTROLLED SEATS ARE INOPERATIVE
M1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, perform the SCME self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes GO to the SCME DTC Chart.
No If the diagnostic scan tool did not communicate to the SCME,
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
Otherwise, GO to M2

M2 CHECK OPERATION OF THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) USING PARAMETER IDENTIFICATIONS (PIDS)

NOTE: This step verifies the SCME is able to receive and process inbound command messages from the network and demonstrate if the SCME is operational. This indicates the FDIM or FCIM may not be sending the commands correctly.

  • Using a diagnostic scan tool, view the SCME Parameter Identifications (PIDs):

    Driver Seat

    • Seat Cushion Temperature - Driver (SEAT_CSH_TMP_D)
    • Seat Back Temperature - Driver (SEAT_BK_TMP_D)
    • Left Seat Back Heating Control (HEAT_BACK_L)
    • Left Seat Cushion Heating Control (HEAT_CUSH_L)

    Front Passenger Seat

    • Seat Cushion Temperature - Passenger (SEAT_CSH_TMP_P)
    • Seat Back Temperature - Passenger (SEAT_BK_TMP_P)
    • Right Seat Back Heating Control (HEAT_BACK_R)
    • Right Seat Cushion Heating Control (HEAT_CUSH_R)
  • NOTE: The SCME active commands are limited to 15 seconds in the ON state. Operate the affected climate controlled seat using the active command while monitoring the appropriate Parameter Identifications (PIDs) for that seat.
    • When the command is in process the blower motor temperature Parameter Identifications (PIDs) on the affected seat should momentarily increase. If no temperature increase is noted, verify the cushion/backrest blower filter is unobstructed and repeat the active command while physically monitoring the blower for fan movement.

Do the PID states or cushion/backrest blower movement indicate climate controlled seat operation when using the active command?
Yes GO to M3
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

M3 USE THE FCIM (FRONT CONTROLS INTERFACE MODULE) BUTTONS AND MONITOR THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) PID (PARAMETER IDENTIFICATION) FOR A RESPONSE
  • Using a diagnostic scan tool, view the SCME Parameter Identifications (PIDs):
    • Climate Controlled Seat System State - Driver (CLIMATE_SEAT_D)
    • Climate Controlled Seat System State - Passenger (CLIMATE_SEAT_P)
  • Start the engine.
  • NOTE: Operation of the climate controlled seats repeatedly on and off or repeatedly switching between heat and cool modes may cause SCME Diagnostic Trouble Codes (DTCs) to set, disabling one or both seat systems and may require Diagnostic Trouble Codes (DTCs) to be cleared before seat operation may continue. It is recommended to allow time between modes for seat temperatures to return toward ambient temperatures before continuing. Attempt to operate the affected climate controlled seat in all modes using the appropriate buttons on the FCIM while monitoring the SCME PID CLIMATE_SEAT_D or CLIMATE_SEAT_P.

Do all the PID states match the climate controlled seat settings selected on the FCIM?
Yes To diagnose the inoperative touchscreen button(s), Refer to the appropriate section in Group 415 for the procedure.
No If only the climate seat functionality is inoperative,
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (FCIM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
If other features of the FCIM are also inoperative, DIAGNOSE the FCIM concern. Refer to the appropriate section in Group 415 for the procedure.


DTC B1153:4B


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1153:4B Driver Seat Cushion: Over Temperature If the driver seat cushion blower motor temperature exceeds 110° C (230° F) in heat mode or 80° C (176° F) in cool mode for more than 4 seconds the SCME shuts down the driver seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Restricted cushion blower motor filter
  • Crushed or restricted cushion foam pad
  • Cushion blower motor
  • DSM

PINPOINT TEST N : DTC B1153:4B
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
N1 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) FOR ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)
  • Start the vehicle and set the driver seat to HIGH heat.
  • Using a diagnostic scan tool, perform the SCME self-test.

Was DTC B1153:4B retrieved on-demand during the self-test?
Yes GO to N2
No GO to N5

N2 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR CIRCUITS FOR A SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to N3
No REPAIR the affected circuit. GO to N22

N3 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR AND WIRING
  • Connect: Driver Cushion Blower Motor C3035.
  • Connect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-1
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to N18
No GO to N4

N4 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS26 (VT) or RHS05 (YE/VT) for an open or high resistance. GO to N22
No INSTALL a new driver seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N5 CONFIRM THE FAULT WHILE MONITORING THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) SEAT BACK TEMPERATURE - DRIVER (SEAT_BK_TMP_D) AND SEAT CUSHION TEMPERATURE - DRIVER (SEAT_CSH_TMP_D) PARAMETER IDENTIFICATIONS (PIDS)
  • Set the driver seat to OFF.
  • Using a diagnostic scan tool, clear the SCME Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, monitor the SCME SEAT_BK_TMP_D and SEAT_CSH_TMP_D.
  • NOTE: A crushed seat cushion foam pad may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault. Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH heat for at least 15 minutes while occupying the seat.

Do the Parameter Identifications (PIDs) increase incrementally (gradually) and stay within 15° C (27° F) of each other?
Yes The fault is not present at this time. The fault may have been set due to a past concern, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature.
No If the SEAT_CSH_TMP_D PID increases incrementally and is greater than 15° C (27° F) difference from the SEAT_BK_TMP_D PID, GO to N6
If the SEAT_CSH_TMP_D PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15° C (27° F) difference from the SEAT_BK_TMP_D PID, GO to N16

N6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS
  • With the engine running, set both front seats to HIGH cool.
  • Note the airflow exhausting from the passenger seat cushion blower motor and compare it to the airflow exhausting from the driver seat cushion blower motor.
  • Carry out a wiggle test of the wire harnesses between the DSM and the driver seat cushion blower motor while monitoring blower operation. The blower should operate consistently and not change speeds.

Is the airflow exhausting from the passenger seat cushion blower motor comparable to the airflow exhausting from the driver seat cushion blower motor with no change in operation when carrying out the wiggle test?
Yes GO to N7
No If the airflow exhausting from the driver seat cushion blower motor is not comparable to the airflow exhausting from the passenger seat cushion blower motor, GO to N8
If the driver seat cushion blower motor blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault.

N7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED
  • Note the airflow exhausting from the driver seat cushion blower motor with the driver seat occupied and compare it to the airflow exhausting from the passenger seat cushion blower motor with the passenger seat occupied.

Is the airflow exhausting from the driver seat cushion blower motor comparable to the airflow exhausting from the passenger seat cushion blower motor?
Yes GO to N16
No INSTALL a new driver seat cushion foam pad.

N8 CHECK THE DRIVER SEAT CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER
  • Ignition OFF.
  • Inspect the driver seat cushion blower motor assembly for an obstruction or for a restricted filter.

Is the blower motor obstructed or the filter restricted?
Yes REMOVE the obstruction or INSTALL a new seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
No GO to N9

N9 CHECK THE DRIVER SEAT CUSHION BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-7

Is the resistance less than 3 ohms?
Yes GO to N10
No REPAIR the circuit. GO to N22

N10 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to N22
No GO to N11

N11 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to N12
No REPAIR the circuit. GO to N22

N12 CHECK THE DRIVER SEAT CUSHION BLOWER CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-3
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-4

Are the resistances less than 3 ohms?
Yes GO to N13
No REPAIR the affected circuit. GO to N22

N13 CHECK THE DRIVER SEAT CUSHION BLOWER RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to N14
No INSTALL a new driver seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N14 CHECK THE DRIVER SEAT CUSHION BLOWER SPEED CONTROL RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-7, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-4, Component Side

Is the resistance between 240K and 400K ohms?
Yes GO to N15
No INSTALL a new driver seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N15 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR INSTALLATION AND FOR CRUSHED SEAT CUSHION
  • Ignition OFF.
  • Remove the driver seat cushion cover.
    REFER to: Front Seat Cushion Cover (501-10A Front Seats, Removal and Installation).
  • Inspect the driver seat cushion for the following:
    • Blower motor correctly installed
    • Seat cushion foam pad crushed or restricted

Is the driver seat cushion blower motor correctly installed and are there no signs of damage to the foam pad?
Yes INSTALL the driver seat cushion cover and seat. GO to N18
No Correctly INSTALL the driver seat cushion blower motor or INSTALL a new driver seat cushion foam pad. GO to N22

N16 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR AND WIRING
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-1
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to N18
No GO to N17

N17 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS26 (VT) or RHS05 (YE/VT) for an open or high resistance. GO to N22
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N18 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR HEATING/COOLING CIRCUITRY CURRENT DRAW
  • Connect all DSM, blower motor and body harness-to-seat harness connectors.
  • NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete. NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the VMM available for use with IDS. If these are unavailable, the inductive current probe feature from a battery tester may be substituted. Place an inductive current probe around circuit CHS02 (YE/BU) near DSM C341D-1 and monitor the current draw.
  • Start the engine and set the driver seat to HIGH heat.

Is the current draw less than 11 amps?
Yes GO to N19
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N19 CHECK RESISTANCE OF THE DRIVER SEAT CUSHION BLOWER MOTOR AND WIRING
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   C341D-6

Are the resistances between 0.9 and 10 ohms?
Yes GO to N21
No GO to N20

N20 CHECK THE RESISTANCE OF THE DRIVER SEAT CUSHION BLOWER MOTOR
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes REPAIR circuit CHS02 (YE/BU) or RHS02 (BU/OG) for an open or high resistance. GO to N22
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to N22

N21 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to N22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to N22

N22 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B1154:4B


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1154:4B Driver Seat Back: Over Temperature If the driver seat backrest blower motor temperature exceeds 110° C (230° F) in heat mode or 80° C (176° F) in cool mode for more than 4 seconds the SCME shuts down the driver seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Restricted backrest blower motor filter
  • Crushed or restricted backrest foam pad
  • Backrest blower motor
  • DSM

PINPOINT TEST O : DTC B1154:4B
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
O1 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) FOR ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)
  • Start the vehicle and set the driver seat to HIGH heat.
  • Using a diagnostic scan tool, perform the SCME self-test.

Was DTC B1154:4B retrieved on-demand during the self-test?
Yes GO to O2
No GO to O5

O2 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR CIRCUITS FOR A SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to O3
No REPAIR the affected circuit. GO to O22

O3 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR AND WIRING
  • Connect: Driver Backrest Blower Motor C3034.
  • Connect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-1
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to O18
No GO to O4

O4 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit CHS14 (GN) or CHS29 (WH/BU)/ RHS05 (YE/VT) for an open or high resistance. GO to O22
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O5 CONFIRM THE FAULT WHILE MONITORING THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) SEAT BACK TEMPERATURE - DRIVER (SEAT_BK_TMP_D) AND SEAT CUSHION TEMPERATURE - DRIVER (SEAT_CSH_TMP_D) PARAMETER IDENTIFICATIONS (PIDS)
  • Set the passenger seat to OFF.
  • Using a diagnostic scan tool, clear the SCME Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, monitor the SCME SEAT_BK_TMP_D and SEAT_CSH_TMP_D.
  • NOTE: A crushed seat backrest foam pad may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault. Attempt to recreate the fault. Start the vehicle and set the driver seat to HIGH heat for at least 15 minutes while occupying the seat.

Do the Parameter Identifications (PIDs) increase incrementally (gradually) and stay within 15° C (27° F) of each other?
Yes The fault is not present at this time. The fault may have been set due to a past concern, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature.
No If the SEAT_BK_TMP_D PID increases incrementally and is greater than 15° C (27° F) difference from the SEAT_CSH_TMP_D PID, GO to O6
If the SEAT_BK_TMP_D PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15° C (27° F) from the SEAT_CSH_TMP_D PID, GO to O16

O6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS
  • With the engine running, set both front seats to HIGH cool.
  • Note the airflow exhausting from the driver seat backrest blower motor and compare it to the airflow exhausting from the passenger seat backrest blower motor.
  • Carry out a wiggle test of the wire harnesses between the DSM and the driver seat backrest blower motor while monitoring blower operation. The blower should operate consistently and not change speeds.

Is the airflow exhausting from the driver seat backrest blower motor comparable to the airflow exhausting from the passenger seat backrest blower motor with no change in operation when carrying out the wiggle test?
Yes GO to O7
No If the airflow exhausting from the driver seat backrest blower motor is not comparable to the airflow exhausting from the passenger seat backrest blower motor, GO to O8
If the driver seat backrest blower motor operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault.

O7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED
  • Note the airflow exhausting from the driver seat backrest blower motor with the driver seat occupied and compare it to the airflow exhausting from the passenger seat backrest blower motor with the passenger seat occupied.

Is the airflow exhausting from the driver seat backrest blower motor comparable to the airflow exhausting from the passenger seat backrest blower motor?
Yes GO to O16
No INSTALL a new driver seat backrest foam pad.

O8 CHECK THE DRIVER SEAT BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER
  • Ignition OFF.
  • Inspect the blower of the driver seat backrest blower motor assembly for an obstruction or for a restricted filter.

Is the blower obstructed or the filter restricted?
Yes REMOVE the obstruction or INSTALL a new seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
No GO to O9

O9 CHECK THE DRIVER SEAT BACKREST BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-7

Is the resistance less than 3 ohms?
Yes GO to O10
No REPAIR the circuit. GO to O22

O10 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to O22
No GO to O11

O11 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to O12
No REPAIR the circuit. GO to O22

O12 CHECK THE DRIVER SEAT BACKREST BLOWER CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-3
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-4

Are the resistances less than 3 ohms?
Yes GO to O13
No REPAIR the affected circuit. GO to O22

O13 CHECK THE DRIVER SEAT BACKREST BLOWER RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to O14
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O14 CHECK THE DRIVER SEAT BACKREST BLOWER SPEED CONTROL RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-7, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-4, Component Side

Is the resistance between 240K and 400K ohms?
Yes GO to O15
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O15 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR INSTALLATION AND FOR CRUSHED SEAT BACKREST
  • Ignition OFF.
  • Remove the driver seat backrest cover.
    REFER to: Front Seat Backrest Cover (501-10A Front Seats, Removal and Installation).
  • Inspect the driver seat backrest for the following:
    • Blower motor correctly installed
    • Backrest foam pad crushed or restricted

Is the driver seat backrest blower motor correctly installed and are there no signs of damage to the foam pad?
Yes INSTALL the driver seat backrest cover and seat. GO to O18
No Correctly INSTALL the driver seat backrest blower motor or INSTALL a new driver seat backrest foam pad. GO to O22

O16 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR AND WIRING
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341E.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-1
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to O18
No GO to O17

O17 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit CHS14 (GN) or CHS29 (WH/BU)/ RHS05 (YE/VT) for an open or high resistance. GO to O22
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O18 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR HEATING/COOLING CIRCUITRY CURRENT DRAW
  • Connect all DSM, blower motor and body harness-to-seat harness connectors.
  • NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete. NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the VMM available for use with IDS. If these are unavailable, the inductive current probe feature from a battery tester may be substituted. Place an inductive current probe around circuit CHS01 (GY/VT) near DSM C341D-5 and monitor the current draw.
  • Start the engine and set the driver seat to HIGH heat.

Is the current draw less than 11 amps?
Yes GO to O19
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O19 CHECK RESISTANCE OF THE DRIVER SEAT BACKREST BLOWER MOTOR AND WIRING
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   C341D-15

Are the resistances between 0.9 and 10 ohms?
Yes GO to O21
No GO to O20

O20 CHECK THE RESISTANCE OF THE DRIVER SEAT BACKREST BLOWER MOTOR
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes REPAIR circuit CHS01 (GY/VT) or RHS01 (WH/VT) for an open or high resistance. GO to O22
No INSTALL a new driver seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to O22

O21 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to O22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to O22

O22 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B1151:4B


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1151:4B Passenger Seat Cushion: Over Temperature If the passenger seat cushion blower motor temperature exceeds 110° C (230° F) in heat mode or 80° C (176° F) in cool mode for more than 4 seconds the SCME shuts down the passenger seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Restricted cushion blower motor filter
  • Crushed or restricted cushion foam pad
  • Cushion blower motor
  • DSM

PINPOINT TEST P : DTC B1151:4B
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
P1 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) FOR ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)
  • Start the vehicle and set the passenger seat to HIGH heat.
  • Using a diagnostic scan tool, perform the SCME self-test.

Was DTC B1151:4B retrieved on-demand during the self-test?
Yes GO to P2
No GO to P5

P2 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR CIRCUITS FOR A SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Disconnect: Passenger Seat Cushion Blower Motor C3040.
  • Disconnect: Passenger Seat Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to P3
No REPAIR the affected circuit. GO to P22

P3 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR AND WIRING
  • Connect: Passenger Cushion Blower Motor C3040.
  • Connect: Passenger Seat Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-2
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to P18
No GO to P4

P4 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Disconnect: Passenger Seat Cushion Blower Motor C3040.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS27 (WH/OG) or RHS10 (BU/OG) for an open or high resistance. GO to P22
No INSTALL a new passenger seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P5 CONFIRM THE FAULT WHILE MONITORING THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) SEAT BACK TEMPERATURE - PASSENGER (SEAT_BK_TMP_P) AND SEAT CUSHION TEMPERATURE - PASSENGER (SEAT_CSH_TMP_P) PARAMETER IDENTIFICATIONS (PIDS)
  • Set the passenger seat to OFF.
  • Using a diagnostic scan tool, clear the SCME Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, monitor the SCME SEAT_BK_TMP_P and SEAT_CSH_TMP_P Parameter Identifications (PIDs).
  • NOTE: A crushed seat cushion foam pad may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault. Attempt to recreate the fault. Start the vehicle and set the passenger seat to HIGH heat for at least 15 minutes while occupying the seat.

Do the Parameter Identifications (PIDs) increase incrementally (gradually) and stay within 15° C (27° F) of each other?
Yes The fault is not present at this time. The fault may have been set due to a past concern, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature.
No If the SEAT_CSH_TMP_P PID increases incrementally and is greater than 15° C (27° F) difference from the SEAT_BK_TMP_P PID, GO to P6
If the SEAT_CSH_TMP_P PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15° C (27° F) difference from the SEAT_BK_TMP_P PID, GO to P16

P6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS
  • With the engine running, set both front seats to HIGH cool.
  • Note the airflow exhausting from the passenger seat cushion blower motor and compare it to the airflow exhausting from the driver seat cushion blower motor.
  • Carry out a wiggle test of the wire harnesses between the DSM and the passenger seat cushion blower motor while monitoring blower operation. The blower should operate consistently and not change speeds.

Is the airflow exhausting from the passenger seat cushion blower motor comparable to the airflow exhausting from the driver seat cushion blower motor with no change in operation when carrying out the wiggle test?
Yes GO to P7
No If the airflow exhausting from the passenger seat cushion blower motor is not comparable to the airflow exhausting from the driver seat cushion blower motor, GO to P8
If the passenger seat cushion blower motor operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault.

P7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED
  • Note the airflow exhausting from the passenger seat cushion blower motor with the passenger seat occupied and compare it to the airflow exhausting from the driver seat cushion blower motor with the driver seat occupied.

Is the airflow exhausting from the passenger seat cushion blower motor comparable to the airflow exhausting from the driver seat cushion blower motor?
Yes GO to P16
No INSTALL a new passenger seat cushion foam pad.

P8 CHECK THE PASSENGER SEAT CUSHION BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER
  • Ignition OFF.
  • Inspect the blower of the passenger seat cushion blower motor assembly for an obstruction or for a restricted filter.

Is the blower obstructed or the filter restricted?
Yes REMOVE the obstruction or INSTALL a new passenger seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
No GO to P9

P9 CHECK THE PASSENGER SEAT CUSHION BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Disconnect: Passenger Seat Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-7

Is the resistance less than 3 ohms?
Yes GO to P10
No REPAIR the circuit. GO to P22

P10 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to P22
No GO to P11

P11 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to P12
No REPAIR the circuit. GO to P22

P12 CHECK THE PASSENGER SEAT CUSHION BLOWER CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-3
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-4

Are the resistances less than 3 ohms?
Yes GO to P13
No REPAIR the affected circuit. GO to P22

P13 CHECK THE PASSENGER SEAT CUSHION BLOWER RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to P14
No INSTALL a new passenger seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P14 CHECK THE PASSENGER SEAT CUSHION BLOWER SPEED CONTROL RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-7, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-4, Component Side

Is the resistance between 240K and 400K ohms?
Yes GO to P15
No INSTALL a new passenger seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P15 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR INSTALLATION AND FOR CRUSHED SEAT CUSHION
  • Ignition OFF.
  • Remove the passenger seat cushion cover.
    REFER to: Front Seat Cushion Cover (501-10A Front Seats, Removal and Installation).
  • Inspect the passenger seat cushion for the following:
    • Passenger seat cushion blower motor correctly installed
    • Passenger seat cushion seat cushion foam pad crushed or restricted

Is the passenger seat cushion blower motor correctly installed and are there no signs of damage to the foam pad?
Yes INSTALL the passenger seat cushion cover and seat. GO to P18
No Correctly INSTALL the passenger seat cushion blower motor or INSTALL a new passenger seat cushion foam pad.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P16 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR AND WIRING
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-2
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to P18
No GO to P17

P17 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS26 (VT)/ (VHS27 (WH/OG) or RHS05 (YE/VT)/ RHS10 (BU/OG) for an open or high resistance. GO to P22
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P18 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR HEATING/COOLING CIRCUITRY CURRENT DRAW
  • Connect all DSM, blower motor and body harness-to-seat harness connectors.
  • NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete. NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the VMM available for use with IDS. If these are unavailable, the inductive current probe feature from a battery tester may be substituted. Place an inductive current probe around circuit CHS07 (GY/BU) near DSM C341D-2 and monitor the current draw.
  • Start the engine and set the passenger seat to HIGH heat.

Is the current draw less than 11 amps?
Yes GO to P19
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P19 CHECK RESISTANCE OF THE PASSENGER SEAT CUSHION BLOWER MOTOR AND WIRING
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   C341D-10

Is the resistance between 0.9 and 10 ohms?
Yes GO to P21
No GO to P20

P20 CHECK THE RESISTANCE OF THE PASSENGER SEAT CUSHION BLOWER MOTOR
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes REPAIR circuit CHS02 (YE/BU)/ CHS07 (GY/BU) or RHS02 (BU/OG)/ RHS07 (BU) for an open or high resistance. GO to P22
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to P22

P21 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 or Passenger Side Airbag In-line C3206 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to P22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to P22

P22 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B1152:4B


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1152:4B Passenger Seat Back: Over Temperature If the passenger seat backrest blower motor temperature exceeds 110° C (230° F) in heat mode or 80° C (176° F) in cool mode for more than 4 seconds the SCME shuts down the passenger seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Restricted backrest blower motor filter
  • Crushed or restricted backrest foam pad
  • Backrest blower motor
  • DSM

PINPOINT TEST Q : DTC B1152:4B
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
Q1 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) FOR ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)
  • Start the vehicle and set the passenger seat to HIGH heat.
  • Using a diagnostic scan tool, perform the SCME self-test.

Was DTC B1152:4B retrieved on-demand during the self-test?
Yes GO to Q2
No GO to Q5

Q2 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR CIRCUITS FOR A SHORT TO GROUND
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to Q3
No REPAIR the affected circuit. GO to Q22

Q3 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR AND WIRING
  • Connect: Passenger Backrest Blower Motor C3039.
  • Connect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-2
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to Q18
No GO to Q4

Q4 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS36 (YE/BU) or RHS10 (BU/OG) for an open or high resistance. GO to Q22
No INSTALL a new passenger seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q5 CONFIRM THE FAULT WHILE MONITORING THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) SEAT BACK TEMPERATURE - PASSENGER (SEAT_BK_TMP_P) AND SEAT CUSHION TEMPERATURE - PASSENGER (SEAT_CSH_TMP_P) PARAMETER IDENTIFICATIONS (PIDS)
  • Set the passenger seat to OFF.
  • Using a diagnostic scan tool, clear the SCME Diagnostic Trouble Codes (DTCs).
  • Using a diagnostic scan tool, monitor the SCME SEAT_BK_TMP_P and SEAT_CSH_TMP_P.
  • NOTE: A crushed seat backrest foam pad may be the cause of the fault making it necessary to occupy the seat to recreate and identify the fault. Attempt to recreate the fault. Start the vehicle and set the passenger seat to HIGH heat for at least 15 minutes while occupying the seat.

Do the Parameter Identifications (PIDs) increase incrementally (gradually) and stay within 15° C (27° F) of each other?
Yes The fault is not present at this time. The fault may have been set due to a past concern, incorrect use of the climate controlled seat system by repeated switching between heat and cool modes or due to excessive passenger compartment temperature.
No If the SEAT_BK_TMP_P PID increases incrementally and is greater than 15° C (27° F) difference from the SEAT_CSH_TMP_P PID, GO to Q6
If the SEAT_BK_TMP_P PID increases quickly (temperature "jumps" and does not increase incrementally) and is greater than 15° C (27° F) difference from the SEAT_CSH_TMP_P PID, GO to Q16

Q6 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS
  • With the engine running, set both front seats to HIGH cool.
  • Note the airflow exhausting from the passenger seat backrest blower motor and compare it to the airflow exhausting from the driver seat backrest blower motor.
  • Carry out a wiggle test of the wire harnesses between the DSM and the passenger seat backrest blower motor while monitoring blower operation. The blower should operate consistently and not change speeds.

Is the airflow exhausting from the passenger seat backrest blower motor comparable to the airflow exhausting from the driver seat backrest blower motor with no change in operation when carrying out the wiggle test?
Yes GO to Q7
No If the airflow exhausting from the passenger seat backrest blower motor is not comparable to the airflow exhausting from the driver seat backrest blower motor, GO to Q8
If the passenger seat backrest blower motor blower operation changed while carrying out the wiggle test, IDENTIFY and REPAIR the wiring fault.

Q7 COMPARE OPERATION OF THE DRIVER AND PASSENGER SEATS WHILE OCCUPIED
  • Note the airflow exhausting from the passenger seat backrest blower motor with the passenger seat occupied and compare it to the airflow exhausting from the driver seat backrest blower motor with the driver seat occupied.

Is the airflow exhausting from the passenger seat backrest blower motor comparable to the airflow exhausting from the driver seat backrest blower motor?
Yes GO to Q16
No INSTALL a new passenger seat backrest foam pad.

Q8 CHECK THE PASSENGER SEAT BACKREST BLOWER FOR AN OBSTRUCTION OR RESTRICTED FILTER
  • Ignition OFF.
  • Inspect the blower of the passenger seat backrest blower motor assembly for an obstruction or for a restricted filter.

Is the blower obstructed or the filter restricted?
Yes REMOVE the obstruction or INSTALL a new passenger seat backrest blower.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
No GO to Q9

Q9 CHECK THE PASSENGER SEAT BACKREST BLOWER SPEED CONTROL CIRCUIT FOR AN OPEN
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-7

Is the resistance less than 3 ohms?
Yes GO to Q10
No REPAIR the circuit. GO to Q22

Q10 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: DSM C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to Q22
No GO to Q11

Q11 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to Q12
No REPAIR the circuit. GO to Q22

Q12 CHECK THE PASSENGER SEAT BACKREST BLOWER CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-3
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-4

Are the resistances less than 3 ohms?
Yes GO to Q13
No REPAIR the affected circuit. GO to Q22

Q13 CHECK THE PASSENGER SEAT BACKREST BLOWER RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to Q14
No INSTALL a new passenger seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q14 CHECK THE PASSENGER SEAT BACKREST BLOWER SPEED CONTROL RESISTANCE
  • NOTE: The ohmmeter must be connected with the positive lead to pin 7 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-7, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-4, Component Side

Is the resistance between 240K and 400K ohms?
Yes GO to Q15
No INSTALL a new passenger seat backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q15 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR INSTALLATION AND FOR CRUSHED SEAT BACKREST
  • Ignition OFF.
  • Remove the passenger seat backrest cover.
    REFER to: Front Seat Backrest Cover (501-10A Front Seats, Removal and Installation).
  • Inspect the passenger seat backrest for the following:
    • Passenger seat backrest blower motor correctly installed
    • Passenger seat backrest seat backrest foam pad crushed or restricted

Is the passenger seat backrest blower motor correctly installed and are there no signs of damage to the foam pad?
Yes INSTALL the passenger seat backrest cover and seat. GO to Q18
No Correctly INSTALL the passenger seat backrest blower motor or INSTALL a new passenger seat backrest foam pad. GO to Q22

Q16 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR AND WIRING
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341E.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   C341E-2
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to Q18
No GO to Q17

Q17 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes REPAIR circuit VHS36 (YE/BU) or RHS20 (GN/BU)/ RHS10 (BL/OG) for an open or high resistance. GO to Q22
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q18 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR HEATING/COOLING CIRCUITRY CURRENT DRAW
  • Connect all DSM, blower motor and body harness-to-seat harness connectors.
  • NOTICE: It may be necessary to open the seat wire harness conduit to allow placing the inductive current probe around the circuit as described in the following step. Care must be taken when opening up the wire harness so as not to damage any wiring or connectors. Do not damage any wiring or induce stress on any wiring or connectors. Close up the wire harness once repairs to the seat are complete. NOTE: Use a commercially available inductive current probe (such as Electronic Specialties Current Probe/Multimeter 685 or a Fluke I410 [used with a digital multimeter]) or the low current probe from the VMM available for use with IDS. If these are unavailable, the inductive current probe feature from a battery tester may be substituted. Place an inductive current probe around circuit CHS06 (BU/BN) near DSM C341D-12 and monitor the current draw.
  • Start the engine and set the passenger seat to HIGH heat.

Is the current draw less than 11 amps?
Yes GO to Q19
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q19 CHECK RESISTANCE OF THE PASSENGER SEAT BACKREST BLOWER MOTOR AND WIRING
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   C341D-16

Are the resistances between 0.9 and 10 ohms?
Yes GO to Q21
No GO to Q20

Q20 CHECK THE RESISTANCE OF THE PASSENGER SEAT BACKREST BLOWER MOTOR
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes REPAIR circuit CHS06 (BU/BN) or RHS06 (WH) for an open or high resistance. GO to Q22
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q22

Q21 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 or Passenger Side Airbag In-line C3206 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to Q22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to Q22

Q22 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B1208:01, B1208:98, B14B9:01, B14B9:11, B14B9:12, B14B9:13, B14B9:1A and B14BD:11


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure If the driver seat cushion blower motor temperature is outside the maximum temperature range, the SCME shuts down the driver seat system and sets this DTC.
B1208:98 Driver Seat Cushion Temperature Sensor: Component or System Over Temperature If the driver seat cushion blower motor temperature is outside the maximum temperature range, the SCME shuts down the driver seat system and sets this DTC.
B14B9:01 Driver Seat Cushion Thermal Electric Device: General Electrical Failure If the outputs to the driver seat cushion thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14B9:11 Driver Seat Cushion Thermal Electric Device: Circuit Short To Ground If the outputs to the driver seat cushion thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14B9:12 Driver Seat Cushion Thermal Electric Device: Circuit Short To Battery If the outputs to the driver seat cushion thermal electric device are shorted to voltage or current flow is below a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14B9:13 Driver Seat Cushion Thermal Electric Device: Circuit Open If the outputs to the driver seat cushion thermal electric device are disconnected, open or current flow is below a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14B9:1A Driver Seat Cushion Thermal Electric Device: Circuit Resistance Below Threshold If the current flow of the outputs to the driver seat cushion thermal electric device is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Cushion blower motor
  • DSM

PINPOINT TEST R : DTC B1208:01, B1208:98, B14B9:01, B14B9:11, B14B9:12, B14B9:13, B14B9:1A AND B14BD:11
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
R1 CHECK THE RESISTANCE OF THE DRIVER SEAT CUSHION BLOWER MOTOR THERMO-ELECTRIC DEVICE (TED)
  • Ignition OFF.
  • Disconnect: Driver Cushion Blower Motor C3035.
  • NOTE: Do not operate the heated/climate seat for 60 minutes before carrying out any diagnostics. Allow the seat to rest for 60 minutes until it has reached ambient temperature. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes GO to R2
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

R2 CHECK THE RESISTANCE OF THE DRIVER SEAT CUSHION BLOWER MOTOR
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to R3
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

R3 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR AN INTERNAL SHORT TOGETHER
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-7, Component Side

Is the resistance greater than 2M ohms?
Yes GO to R4
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

R4 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3035-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3035-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to R5
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

R5 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341D and C341E.
  • Connect: Driver Cushion Blower Motor C3035.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are any voltages present?
Yes REPAIR the affected circuit. GO to R13
No GO to R6

R6 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to R9
No GO to R7

R7 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE CUSHION BLOWER MOTOR DISCONNECTED
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to R13
No GO to R8

R8 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE BACKREST BLOWER MOTOR DISCONNECTED
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes REPAIR the affected circuit. GO to R13
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to R13

R9 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-3
      C341D-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-1
      C341D-6 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-2
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-4
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-6 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-5
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-8
      C341E-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-7

Are the resistances less than 3 ohms?
Yes GO to R10
No REPAIR the affected circuit. GO to R13

R10 CHECK THE DRIVER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TOGETHER
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3035-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-2
      C3035-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-4
      C3035-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-7
      C3035-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-7
      C3035-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3035-8

Are the resistances greater than 10,000 ohms?
Yes GO to R11
No REPAIR the affected circuits. GO to R13

R11 DETERMINE CUSHION BLOWER MOTOR OR SCME (FRONT SEAT CLIMATE CONTROL MODULE) FAILURE
  • Remove the cushion blower motor from the driver seat.
    REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
  • Remove the cushion blower motor from the passenger seat and install it on the driver seat.
  • Connect: Driver Cushion Blower Motor C3035.
  • Connect: DSM C341D and C341E.
  • Start the engine and check operation of the driver seat climate controlled seat system.

Does the seat operate with the cushion blower motor from the other seat installed?
Yes INSTALL a new seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to R13
No GO to R12

R12 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to R13
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to R13

R13 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B120A:01, B120A:98, B14BB:01, B14BB:11, B14BB:12, B14BB:13, B14BB:1A and B14C0:11


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure If the passenger seat cushion blower motor temperature is outside the maximum temperature range, the SCME shuts down the passenger seat system and sets this DTC.
B120A:98 Passenger Seat Cushion Temperature Sensor: Component or System Over Temperature If the passenger seat cushion blower motor temperature is outside the maximum temperature range, the SCME shuts down the passenger seat system and sets this DTC.
B14BB:01 Passenger Seat Cushion Thermal Electric Device: General Electrical Failure If the outputs to the passenger seat cushion thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BB:11 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Ground If the outputs to the passenger seat cushion thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BB:12 Passenger Seat Cushion Thermal Electric Device: Circuit Short To Battery If the outputs to the passenger seat cushion thermal electric device are shorted to voltage or current flow is below a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BB:13 Passenger Seat Cushion Thermal Electric Device: Circuit Open If the outputs to the passenger seat cushion thermal electric device are disconnected, open or current flow is below a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BB:1A Passenger Seat Cushion Thermal Electric Device: Circuit Resistance Below Threshold If the current flow of the outputs to the passenger seat cushion thermal electric device is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Cushion blower motor
  • DSM

PINPOINT TEST S : DTC B120A:01, B120A:98, B14BB:01, B14BB:11, B14BB:12, B14BB:13, B14BB:1A AND B14C0:11
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
S1 CHECK THE RESISTANCE OF THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMO-ELECTRIC DEVICE (TED)
  • Ignition OFF.
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • NOTE: Do not operate the heated/climate seat for 60 minutes before carrying out any diagnostics. Allow the seat to rest for 60 minutes until it has reached ambient temperature. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes GO to S2
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

S2 CHECK THE RESISTANCE OF THE PASSENGER SEAT CUSHION BLOWER MOTOR
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to S3
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

S3 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR AN INTERNAL SHORT TOGETHER
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-7, Component Side

Is the resistance greater than 2M ohms?
Yes GO to S4
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

S4 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR THERMISTOR
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3040-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3040-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to S5
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).

S5 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341D and C341E.
  • Connect: Passenger Cushion Blower Motor C3040.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are any voltages present?
Yes REPAIR the affected circuit. GO to S13
No GO to S6

S6 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to S9
No GO to S7

S7 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE CUSHION BLOWER MOTOR DISCONNECTED
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to S13
No GO to S8

S8 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE BACKREST BLOWER MOTOR DISCONNECTED
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes REPAIR the affected circuit. GO to S13
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to S13

S9 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-3
      C341D-2 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-1
      C341D-10 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-2
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-4
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-5
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-8
      C341E-7 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-7

Are the resistances less than 3 ohms?
Yes GO to S10
No REPAIR the affected circuit. GO to S13

S10 CHECK THE PASSENGER SEAT CUSHION BLOWER MOTOR CIRCUITS FOR A SHORT TOGETHER
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3040-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-2
      C3040-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-4
      C3040-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-7
      C3040-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-7
      C3040-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3040-8

Are the resistances greater than 10,000 ohms?
Yes GO to S11
No REPAIR the affected circuits. GO to S13

S11 DETERMINE CUSHION BLOWER MOTOR OR SCME (FRONT SEAT CLIMATE CONTROL MODULE) FAILURE
  • Remove the cushion blower motor from the passenger seat.
    REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
  • Remove the cushion blower motor from the driver seat and install it on the passenger seat.
  • Connect: Passenger Cushion Blower Motor C3040.
  • Connect: DSM C341D and C341E.
  • Start the engine and check operation of the passenger seat climate controlled seat system.

Does the seat operate with the cushion blower motor from the other seat installed?
Yes INSTALL a new seat cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to S13
No GO to S12

S12 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 or Passenger Side Airbag In-Line C3206 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to S13
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to S13

S13 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B1209:01, B1209:98, B14BA:01, B14BA:11, B14BA:12, B14BA:13, B14BA:1A and B14BE:11


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1209:01 Driver Seat Back Temperature Sensor: General Electrical Failure If the driver seat back blower motor temperature is outside the maximum temperature range, the SCME shuts down the driver seat system and sets this DTC.
B1209:98 Driver Seat Back Temperature Sensor: Component or System Over Temperature If the driver seat back blower motor temperature is outside the maximum temperature range, the SCME shuts down the driver seat system and sets this DTC.
B14BA:01 Driver Seat Back Thermal Electric Device: General Electrical Failure If the outputs to the driver seat back thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BA:11 Driver Seat Back Thermal Electric Device: Circuit Short To Ground If the outputs to the driver seat back thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BA:12 Driver Seat Back Thermal Electric Device: Circuit Short To Battery If the outputs to the driver seat back thermal electric device are shorted to voltage or current flow is below a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BA:13 Driver Seat Back Thermal Electric Device: Circuit Open If the outputs to the driver seat back thermal electric device are disconnected, open or current flow is below a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BA:1A Driver Seat Back Thermal Electric Device: Circuit Resistance Below Threshold If the current flow of the outputs to the driver seat back thermal electric device is above a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
B14BE:11 Driver Seat Back Blower: Circuit Short To Ground If the current to the driver seat back blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Backrest blower motor
  • DSM

PINPOINT TEST T : DTC B1209:01, B1209:98, B14BA:01, B14BA:11, B14BA:12, B14BA:13, B14BA:1A AND B14BE:11
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
T1 CHECK THE RESISTANCE OF THE DRIVER SEAT BACKREST BLOWER MOTOR THERMO-ELECTRIC DEVICE (TED)
  • Ignition OFF.
  • Disconnect: Driver Backrest Blower Motor C3034.
  • NOTE: Do not operate the heated/climate seat for 60 minutes before carrying out any diagnostics. Allow the seat to rest for 60 minutes until it has reached ambient temperature. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes GO to T2
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

T2 CHECK THE RESISTANCE OF THE DRIVER SEAT BACKREST BLOWER MOTOR
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to T3
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

T3 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR AN INTERNAL SHORT TOGETHER
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-7, Component Side

Is the resistance greater than 2M ohms?
Yes GO to T4
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

T4 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3034-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3034-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to T5
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

T5 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: DSM C341D and C341E.
  • Connect: Driver Backrest Blower Motor C3034.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are any voltages present?
Yes REPAIR the affected circuit. GO to T13
No GO to T6

T6 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to T9
No GO to T7

T7 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE BACKREST BLOWER MOTOR DISCONNECTED
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to T13
No GO to T8

T8 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE CUSHION BLOWER MOTOR DISCONNECTED
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-15 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes REPAIR the affected circuit. GO to T13
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to T13

T9 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Backrest Blower Motor C3034.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-3
      C341D-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-1
      C341D-15 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-2
      C341D-9 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-4
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-5
      C341E-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-8
      C341E-10 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-7

Are the resistances less than 3 ohms?
Yes GO to T10
No REPAIR the affected circuit. GO to T13

T10 CHECK THE DRIVER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TOGETHER
  • Disconnect: Driver Cushion Blower Motor C3035.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3034-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-2
      C3034-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-4
      C3034-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-7
      C3034-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-7
      C3034-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3034-8

Are the resistances greater than 10,000 ohms?
Yes GO to T11
No REPAIR the affected circuits. GO to T13

T11 DETERMINE BACKREST BLOWER MOTOR OR SCME (FRONT SEAT CLIMATE CONTROL MODULE) FAILURE
  • Remove the backrest blower motor from the driver seat.
    REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
  • Remove the backrest blower motor from the passenger seat and install it on the driver seat.
  • Connect: Driver Backrest Blower Motor C3034.
  • Connect: DSM C341D and C341E.
  • Start the engine and check operation of the driver seat climate controlled seat system.

Does the seat operate with the cushion blower motor from the other seat installed?
Yes INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to T13
No GO to T12

T12 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to T13
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to T13

T13 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC B120B:01, B120B:98, B14BC:01, B14BC:11, B14BC:12, B14BC:13, B14BC:1A and B14C2:11


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B120B:01 Passenger Seat Back Temperature Sensor: General Electrical Failure If the passenger seat back blower motor temperature is outside the maximum temperature range, the SCME shuts down the passenger seat system and sets this DTC.
B120B:98 Passenger Seat Back Temperature Sensor: Component or System Over Temperature If the passenger seat back blower motor temperature is outside the maximum temperature range, the SCME shuts down the passenger seat system and sets this DTC.
B14BC:01 Passenger Seat Back Thermal Electric Device: General Electrical Failure If the outputs to the passenger seat back thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BC:11 Passenger Seat Back Thermal Electric Device: Circuit Short To Ground If the outputs to the passenger seat back thermal electric device are shorted to ground or current flow is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BC:12 Passenger Seat Back Thermal Electric Device: Circuit Short To Battery If the outputs to the passenger seat back thermal electric device are shorted to voltage or current flow is below a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BC:13 Passenger Seat Back Thermal Electric Device: Circuit Open If the outputs to the passenger seat back thermal electric device are disconnected, open or current flow is below a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14BC:1A Passenger Seat Back Thermal Electric Device: Circuit Resistance Below Threshold If the current flow of the outputs to the passenger seat back thermal electric device is above a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.
B14C2:11 Passenger Seat Back Blower: Circuit Short To Ground If the current to the passenger seat back blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC.

Possible Causes

  • Wiring, terminals or connectors
  • Backrest blower motor
  • DSM

PINPOINT TEST U : DTC B120B:01, B120B:98, B14BC:01, B14BC:11, B14BC:12, B14BC:13, B14BC:1A AND B14C2:11
Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
U1 CHECK THE RESISTANCE OF THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMO-ELECTRIC DEVICE (TED)
  • Ignition OFF.
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • NOTE: Do not operate the heated/climate seat for 60 minutes before carrying out any diagnostics. Allow the seat to rest for 60 minutes until it has reached ambient temperature. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-1, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-2, Component Side

Is the resistance between 0.9 and 10 ohms?
Yes GO to U2
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

U2 CHECK THE RESISTANCE OF THE PASSENGER SEAT BACKREST BLOWER MOTOR
  • NOTE: The ohmmeter must be connected with the positive lead to pin 3 and the negative lead to pin 4 when measuring. Ohmmeter leads incorrectly connected results in false readings and leads to incorrect identification of components that are not faulty. Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-4, Component Side

Is the resistance between 4,000 and 10,000 ohms?
Yes GO to U3
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

U3 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR AN INTERNAL SHORT TOGETHER
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-3, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-7, Component Side

Is the resistance greater than 2M ohms?
Yes GO to U4
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

U4 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR THERMISTOR
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    Ford Fusion. Front Seats. Diagnosis and Testing C3039-5, Component Side Ford Fusion. Front Seats. Diagnosis and Testing Ford Fusion. Front Seats. Diagnosis and Testing C3039-8, Component Side
  • Compare the measured resistance value with the following table:
    Ambient Temperature Resistance
    0-10° C (32-50° F) 2,782-1,663 ohms
    10-20° C (50-68° F) 1,837-1,140 ohms
    20-30° C (68-86° F) 1,260-806 ohms
    30-40° C (86-104° F) 893-570 ohms
    40-50° C (104-122° F) 630-428 ohms

Is the resistance within the limits indicated?
Yes GO to U5
No INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).

U5 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Disconnect: Driver Side Airbag In-line C3368.
  • Disconnect: Passenger Side Airbag In-line C3206.
  • Disconnect: DSM C341D and C341E.
  • Connect: Passenger Backrest Blower Motor C3039.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are any voltages present?
Yes REPAIR the affected circuit. GO to U13
No GO to U6

U6 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to U9
No GO to U7

U7 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE BACKREST BLOWER MOTOR DISCONNECTED
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to U13
No GO to U8

U8 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE CUSHION BLOWER MOTOR DISCONNECTED
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-16 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   Ground
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   Ground

Are the resistances greater than 10,000 ohms?
Yes REPAIR the affected circuit. GO to U13
No INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to U13

U9 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Backrest Blower Motor C3039.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-3
      C341D-12 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-1
      C341D-16 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-2
      C341D-11 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-4
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341E-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-5
      C341E-2 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-8
      C341E-8 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-7

Are the resistances less than 3 ohms?
Yes GO to U10
No REPAIR the affected circuit. GO to U13

U10 CHECK THE PASSENGER SEAT BACKREST BLOWER MOTOR CIRCUITS FOR A SHORT TOGETHER
  • Disconnect: Passenger Cushion Blower Motor C3040.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3039-1 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-2
      C3039-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-4
      C3039-3 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-7
      C3039-4 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-7
      C3039-5 Ford Fusion. Front Seats. Diagnosis and Testing   C3039-8

Are the resistances greater than 10,000 ohms?
Yes GO to U11
No REPAIR the affected circuits. GO to U13

U11 DETERMINE BACKREST BLOWER MOTOR OR SCME (FRONT SEAT CLIMATE CONTROL MODULE) FAILURE
  • Remove the backrest blower motor from the passenger seat.
    REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
  • Remove the backrest blower motor from the driver seat and install it on the passenger seat.
  • Connect: Passenger Backrest Blower Motor C3039.
  • Connect: DSM C341D and C341E.
  • Start the engine and check operation of the passenger seat climate controlled seat system.

Does the seat operate with the cushion blower motor from the other seat installed?
Yes INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
GO to U13
No GO to U12

U12 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-Line C3368 or Passenger Side Airbag In-Line C3206 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to U13
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to U13

U13 CHECK FOR SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ford Fusion. Front Seats. Diagnosis and Testing  WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment. Ignition OFF.
  • Connect: Driver Side Airbag In-line C3368.
  • Connect: Passenger Side Airbag In-line C3206.
  • Connect all previously disconnected connectors.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the RCM Diagnostic Trouble Codes (DTCs).
  • Cycle the ignition OFF then ON.
  • Using a diagnostic scan tool, perform RCM self-test.

Are any RCM Diagnostic Trouble Codes (DTCs) retrieved during self-test?
Yes
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No Repair is complete. RETURN the vehicle to the customer.


DTC: U0100:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM and the PCM communicate using the HS-CAN1 and MS-CAN.


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0100:00 Lost Communication with ECM/PCM "A": No Sub Type Information Set by the DSM whenever it has lost communication to the PCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • PCM

PINPOINT TEST V : DTC: U0100:00
V1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to V2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the PCM pass the network test?
Yes GO to V3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

V3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0100:00 still present?
Yes GO to V4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V4 CHECK FOR DTC U0100:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0100:00 set in other modules?
Yes
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (PCM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0140:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCME and the BCM communicate using the MS-CAN.


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0140:00 Lost Communication with Body Control Module: No Sub Type Information Set by the SCME whenever it has lost communication to the BCM for 5 seconds or longer while SCME input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCME
  • BCM

PINPOINT TEST W : DTC: U0140:00
W1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to W2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to W3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

W3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0140:00 still present?
Yes GO to W4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0257:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCME and the FCIM communicate using the HS-CAN3 and MS-CAN.


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0257:00 Lost Communication with Front Controls / Display Interface Module: No Sub Type Information Set by the SCME whenever it has lost communication to the FCIM while SCME input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCME
  • FCIM

PINPOINT TEST X : DTC: U0257:00
X1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to X2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the FCIM pass the network test?
Yes GO to X3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

X3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0257:00 still present?
Yes GO to X4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes
Ford Fusion. Front Seats. Diagnosis and Testing   Click here to access Guided Routine (FCIM).Ford Fusion. Front Seats. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0212:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM and the SCCM communicate using the CAN.


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information Set by the DSM whenever it has lost communication to the BCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • SCCM

PINPOINT TEST Y : DTC: U0212:00
Y1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Y2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the SCCM pass the network test?
Yes GO to Y3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Y3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0212:00 still present?
Yes GO to Y4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y4 CHECK FOR DTC U0212:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0212:00 set in other modules?
Yes INSTALL a new SCCM.
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No INSTALL a new DSM.
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


Component Test(s)

Blower Motor Cooling Performance

NOTE: This test is intended to check the cooling mode performance of an operational climate controlled seat backrest or cushion blower motor and verify it is cooling inlet air at the blower motor (ambient cabin air) between 6-8° C (10-14° F).

NOTE: Make sure the vehicle is out of direct sunlight and is in an area with a stable air temperature when testing the climate controlled seat system.

NOTE: For correct temperature measurements, the seat being tested should be occupied.

  1. Using a diagnostic scan tool, monitor the following SCME Parameter Identifications (PIDs):
    • Seat Cushion Temperature - Driver (SEAT_CSH_TMP_D)
    • Seat Back Temperature - Driver (SEAT_BK_TMP_D)
    • Seat Cushion Temperature - Passenger (SEAT_CSH_TMP_P)
    • Seat Back Temperature - Passenger (SEAT_BK_TMP_P)
    • Climate Controlled Seat System State - Driver (CLIMATE_SEAT_D)
    • Climate Controlled Seat System State - Passenger (CLIMATE_SEAT_P)
  1. Any initial PID value of greater than 205° C (401° F) or less than 2° C (36° F) indicates a system hardware failure. Do not proceed with this test. GO to Symptom Chart or SCME DTC Chart for diagnostic direction.
  1. Gain access to the seat cushion and backrest blower motors and use a suitable thermocouple temperature measuring device to monitor the air inlet temperature.
    • Place the temperature probe near each blower motor air filter.
  1. NOTE: The engine must be running to operate the climate controlled seat system and carry out this test.

    Operate system in high cool mode and measure the temperature at the cushion blower motor filter using the thermocouple device.
    • Secure the temperature probe at the cushion blower motor and record the air inlet temperature.
  1. Use a diagnostic scan tool to measure the cushion blower motor PID temperature and record the value.
    • Monitor the STATE Parameter Identifications (PIDs) to verify the system is operating. If during testing, a PID value indicates a fault has occurred (putting the system into recovery mode) the seat has failed the test. Do not continue. Return to the diagnostic routine.
  1. Subtract the cushion blower motor PID temperature from the cushion air inlet temperature and record the temperature difference value.
  1. Continue to operate the system in high cool mode and use the thermocouple device to measure the temperature at the backrest blower motor filter.
    • Secure the temperature probe at the backrest blower motor and close the backrest trim cover before measuring and recording the air inlet temperature.
  1. Use a diagnostic scan tool to measure the backrest blower motor PID temperature and record the value.
    • Monitor the STATE Parameter Identifications (PIDs) to verify the system is operating. If during testing, a PID value indicates a fault has occurred (putting the system into recovery mode) the seat has failed the test. Do not continue. Return to the diagnostic routine.
  1. Subtract the backrest blower motor PID temperature from the backrest air inlet temperature and record the value.
  1. Compare the cushion and backrest calculated temperature values. The temperature difference should be between 6-8° C (10-14° F).
  1. If the calculated temperature values are not within these specifications, check the climate controlled seat components for air duct or filter restrictions, blockages, duct or electrical disconnections and for incorrect assembly. Repair as needed. If OK, carry out the SCME self-test and if any Diagnostic Trouble Codes (DTCs) are retrieved, go to SCME DTC Chart for diagnostic direction. Return to the diagnostic routine.

    Front Seats - System Operation and Component Description. Description and Operation

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    Using Seatbelts During Pregnancy

    WARNING: Always ride and drive with your seatback upright and properly fasten your seatbelt. Fit the lap portion of the seatbelt snugly and low across the hips. Position the shoulder portion of the seatbelt across your chest. Pregnant women must follow this practice. See the following figure.

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