Ford Fusion Manuals

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

Ford Fusion 2013–2020 Service Manual / Electrical / Lighting / Exterior Lighting / Reversing 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
B1277:11 Reverse Lamp: Circuit Short To Ground   GO to Pinpoint Test A
B1277:15 Reverse Lamp: Circuit Short To Battery or Open
  • If the reverse lamps are is inoperative, GO to Pinpoint Test A
  • If the reverse lamps are 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. Reversing Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Reversing 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)

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: Reversing Lamps

  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, Diagnosis and Testing).
All the reversing lamps are inoperative Refer to the Pinpoint Test   GO to Pinpoint Test A
An individual reversing lamp is inoperative Refer to the Pinpoint Test   GO to Pinpoint Test B
The reversing lamps are on continuously Refer to the Pinpoint Test   GO to Pinpoint Test C

Pinpoint Tests

All the Reversing Lamps Are Inoperative


Refer to Wiring Diagrams Cell 93 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
B1277:11 Reverse Lamp: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the reverse lamps output circuit.
B1277:15 Reverse Lamp: 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 reverse lamps 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
  • Gear range input
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the bulbs and make sure they are OK.

PINPOINT TEST A : ALL THE REVERSING LAMPS ARE INOPERATIVE
A1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) TRANSMISSION RANGE PID (PARAMETER IDENTIFICATION)
  • Apply the parking brake.
  • Ignition ON.
  • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).
  • Monitor the transmission range (TR) PID.
  • Place the gear selector lever in REVERSE.

Does the PID indicate the gear range is in reverse?
Yes GO to A2
No Diagnose the transmission range concern.
REFER to: External Controls (307-05A Automatic Transmission External Controls - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).

A2 CHECK FOR VOLTAGE AT THE REVERSING LAMPS
  • Ignition OFF.
  • Apply the parking brake.
  • Disconnect: For vehicles not equipped with decklid parking lamps (part of reversing lamp), LH Reverse Lamp C4017.
  • Disconnect: For vehicles equipped with decklid parking lamps (part of reversing lamp), LH Reverse Lamp C487.
  • Ignition ON.
  • Place the gear selector in REVERSE.
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes GO to A6
No GO to A3

A3 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE AT THE REVERSING LAMPS
  • Place the gear selector in PARK.
  • 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 gear selector in REVERSE.
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new reversing lamp bulb.
No GO to A4

A4 CHECK THE REVERSING LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A5
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. Reversing Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Reversing Lamps. Diagnosis and Testing Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

A5 CHECK THE REVERSING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11

Is the resistance less than 3 ohms?
Yes GO to A7
No REPAIR the circuit.

A6 CHECK THE REVERSING LAMP GROUND CIRCUIT FOR AN OPEN
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C4017-2
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C487-4

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

A7 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. Reversing Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Reversing 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 Reversing Lamp Is Inoperative


Refer to Wiring Diagrams Cell 93 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

  • Bulb
  • Wiring, terminals or connectors
  • BCM

Visual Inspection and Diagnostic Pre-checks

  • Inspect the bulbs and make sure they are OK.

PINPOINT TEST B : AN INDIVIDUAL REVERSING LAMP IS INOPERATIVE
B1 CHECK FOR VOLTAGE TO THE REVERSING LAMP
  • Ignition OFF.
  • Apply the parking brake.
  • Disconnect: For vehicles not equipped with decklid parking lamps (part of reversing lamp), inoperative LH Reverse Lamp C4017 or RH Reverse Lamp C488.
  • Disconnect: For vehicles equipped with decklid parking lamps (part of reversing lamp), inoperative LH Reverse Lamp C487 or RH Reverse Lamp C4016.
  • Ignition ON.
  • Place the gear selector lever in REVERSE.
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4016-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C488-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   Ground

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

B2 CHECK THE REVERSING LAMP GROUND CIRCUIT FOR AN OPEN
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C4017-2

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4016-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C4016-2
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C487-4

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C488-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C488-4

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

B3 CHECK THE REVERSING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Disconnect: BCM C2280F.
  • For vehicles not equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4017-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C4016-1 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11
  • For vehicles equipped with decklid parking lamps (part of reversing lamp), measure:
    Click to display connectors

      LH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C487-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11

    Click to display connectors

      RH Reverse Lamp


    Positive Lead Measurement / Action Negative Lead
      C488-3 Ford Fusion. Reversing Lamps. Diagnosis and Testing   C2280F-11

Is the resistance less than 3 ohms?
Yes GO to B4
No REPAIR the circuit.

B4 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. Reversing Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Reversing 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.


The Reversing Lamps Are On Continuously


Refer to Wiring Diagrams Cell 93 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
B1277:15 Reverse Lamp: 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 reverse lamps output circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Gear range input
  • BCM

PINPOINT TEST C : THE REVERSING LAMPS ARE ON CONTINUOUSLY
C1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) TRANSMISSION RANGE PID (PARAMETER IDENTIFICATION)
  • Apply the parking brake.
  • Ignition ON.
  • Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).
  • Monitor the transmission range (TR) PID.
  • Place the gear selector lever in each position.

Does the PID indicate reverse when the gear selector is not in reverse?
Yes Diagnose the transmission range concern.
REFER to: External Controls (307-05A Automatic Transmission External Controls - 6-Speed Automatic Transmission – 6F35, Diagnosis and Testing).
No GO to C2

C2 CHECK THE REVERSING LAMPS SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Ignition ON.

Does either reversing lamp continue to illuminate?
Yes REPAIR the affected circuit.
No GO to C3

C3 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. Reversing Lamps. Diagnosis and Testing   Click here to access Guided Routine (BCM).Ford Fusion. Reversing 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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