Ford Fusion Manuals

Ford Fusion: Exterior Lighting / Fog Lamps. Diagnosis and Testing

DTC Chart: BCM

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).


  BCM DTC Chart


DTC Description Action
B1046:11 Front Fog Lamp Control Switch: Circuit Short To Ground   GO to Pinpoint Test C
B1147:11 Left Front Fog Lamps: Circuit Short To Ground   GO to Pinpoint Test B
B1147:15 Left Front Fog Lamps: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test B
  • If the lamp is always on, GO to Pinpoint Test C
B1148:11 Right Front Fog Lamps: Circuit Short To Ground   GO to Pinpoint Test B
B1148:15 Right Front Fog Lamps: Circuit Short To Battery or Open
  • If the lamp is inoperative, GO to Pinpoint Test B
  • If the lamp is always on, GO to Pinpoint Test C
U1000:00 Solid State Driver Protection Actived -Driver Disabled: No Sub Type Information The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected. ADDRESS all other Diagnostic Trouble Codes (DTCs) first. After the cause of the concern is corrected, CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
U3000:49 Control Module: Internal Electronic Failure The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. The cause of the excessive current draw MUST be corrected before a new BCM is installed. ADDRESS all other Diagnostic Trouble Codes (DTCs) first. After the cause of the concern is corrected,
Ford Fusion. Fog Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Fog Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

Symptom Chart(s)

Symptom Chart: Fog Lamps

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
A module does not respond to the scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network) .
Both front fog lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test A
An individual front fog lamp is inoperative Refer to the Pinpoint Test   GO to Pinpoint Test B
One or both front fog lamps are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test C

Pinpoint Tests

Both Front Fog Lamps Are Inoperative


Refer to Wiring Diagrams Cell 86 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Headlamp switch
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the headlamp switch for damage.

PINPOINT TEST A : BOTH FRONT FOG LAMPS ARE INOPERATIVE
A1 CHECK THE HEADLAMP SWITCH
  • Ignition OFF.
  • Disconnect: Headlamp Switch C205.
  • Carry out the headlamp switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the headlamp switch pass the component test?
Yes GO to A2
No INSTALL a new headlamp switch.
REFER to: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).

A2 CHECK THE HEADLAMP SWITCH FOG LAMP ENABLE CIRCUIT FOR AN OPEN
  • Disconnect: BCM C2280G.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C205-14 Ford Fusion. Fog Lamps. Diagnosis and Testing   C2280G-20

Is the resistance less than 3 ohms?
Yes GO to A3
No REPAIR the circuit.

A3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • 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. Fog Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Fog Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
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.


An Individual Front Fog Lamp Is Inoperative


Refer to Wiring Diagrams Cell 86 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1147:11 Left Front Fog Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the left fog lamp output circuit.
B1147:15 Left Front Fog Lamps: Circuit Short To Battery or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the left fog lamp output circuit.
B1148:11 Right Front Fog Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the right fog lamp output circuit.
B1148:15 Right Front Fog Lamps: Circuit Short To Battery or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the right fog lamp output circuit.
U1000:00 Solid State Driver Protection Actived -Driver Disabled: No Sub Type Information This DTC sets when the BCM has temporarily shut down the output driver. The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected, the Diagnostic Trouble Codes (DTCs) have been cleared and a successful self-test is run. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).
U3000:49 Control Module: Internal Electronic Failure This DTC sets when the BCM has permanently shut down the output driver. The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the BCM can withstand. CORRECT the cause of the excessive current draw before installing a new BCM. For additional information on BCM Field Effect Transistor (FET) protection,
REFER to: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

Possible Sources

  • Bulb
  • Wiring, terminals or connectors
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the fog lamp bulb and make sure it is OK.

PINPOINT TEST B : AN INDIVIDUAL FRONT FOG LAMP IS INOPERATIVE
B1 CHECK FOR VOLTAGE TO THE INOPERATIVE FOG LAMP
  • Ignition OFF.
  • Disconnect: Inoperative LH Fog Lamp C152 or RH Fog Lamp C162.
  • Ignition ON.
  • Place the headlamp switch in the HEADLAMPS position and engage the fog lamp switch.
  • Measure:
    Click to display connectors

      LH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C152-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

    Click to display connectors

      RH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C162-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to B3
No GO to B2

B2 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE INOPERATIVE FOG LAMP
  • Place the headlamp switch in the OFF position.
  • Using a diagnostic scan tool, perform the BCM self-test.
  • Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test (required to enable the lamp output driver).
  • Ignition OFF.
  • Ignition ON.
  • Place the headlamp switch in the HEADLAMPS position and engage the fog lamp switch.
  • Measure:
    Click to display connectors

      LH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C152-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

    Click to display connectors

      RH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C162-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new fog lamp bulb.
No GO to B4

B3 CHECK FOG LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C152-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   C152-2

    Click to display connectors

      RH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C162-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   C162-2

Is the voltage greater than 11 volts?
Yes INSTALL a new fog lamp bulb.
No REPAIR the circuit.

B4 CHECK FOG LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280B.
  • Measure:
    Click to display connectors

      LH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C152-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

    Click to display connectors

      RH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C162-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B5
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If any BCM Diagnostic Trouble Codes (DTCs) other than DTC U3000:49 are present, CLEAR the Diagnostic Trouble Codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. TEST the system for normal operation.
If DTC U3000:49 is present,
Ford Fusion. Fog Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Fog Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

B5 CHECK FOG LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C152-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   C2280B-12

    Click to display connectors

      RH Fog Lamp


    Positive Lead Measurement / Action Negative Lead
      C162-1 Ford Fusion. Fog Lamps. Diagnosis and Testing   C2280B-5

Is the resistance less than 3 ohms?
Yes GO to B6
No REPAIR the circuit.

B6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • 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. Fog Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Fog Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
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.


One Or Both Front Fog Lamps Are On Continuously


Refer to Wiring Diagrams Cell 86 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1046:11 Front Fog Lamp Control Switch: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground on the fog lamp on input circuit.
B1147:15 Left Front Fog Lamps: Circuit Short To Battery or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the left fog lamp output circuit.
B1148:15 Right Front Fog Lamps: Circuit Short To Battery or Open A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the right fog lamp output circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Headlamp switch
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the headlamp switch for damage.

PINPOINT TEST C : ONE OR BOTH FRONT FOG LAMPS ARE ON CONTINUOUSLY
C1 CHECK FOG LAMP OPERATION
  • Ignition ON.
  • Place the headlamp switch in the OFF position.
  • Observe the operation of the LH and RH fog lamps.

Are both fog lamps illuminated?
Yes GO to C2
No GO to C4

C2 CHECK THE HEADLAMP SWITCH
  • Ignition OFF.
  • Disconnect: Headlamp Switch C205.
  • Carry out the headlamp switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the headlamp switch pass the component test?
Yes GO to C3
No INSTALL a new headlamp switch.
REFER to: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).

C3 CHECK THE FOG LAMP SWITCH CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: BCM C2280G.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C205-14 Ford Fusion. Fog Lamps. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to C5
No REPAIR the circuit.

C4 CHECK THE FOG LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280B.
  • Ignition ON.

Does either fog lamp continue to illuminate?
Yes REPAIR the circuit in question.
No GO to C5

C5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • 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. Fog Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Fog Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.
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.


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