Ford Explorer: Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

Ford Explorer 2020-2021 Service Manual / Electrical / Lighting / Exterior Lighting / Diagnosis and Testing - Parking, Rear and License Plate Lamps

Diagnostic Trouble Code (DTC) Chart

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).


  Diagnostic Trouble Code Chart


Module   DTC Description Action
  BCM B10F3:11 Left Front Position Light: Circuit Short to Ground   GO to Pinpoint Test A
  BCM B10F3:15 Left Front Position Light: Circuit Short to Battery or Open   GO to Pinpoint Test A
  BCM B10F4:11 Right Front Position Light: Circuit Short to Ground   GO to Pinpoint Test A
  BCM B10F4:15 Right Front Position Light: Circuit Short to Battery or Open   GO to Pinpoint Test A
  BCM B1445:11 Rear Park Lamps Output: Circuit Short to Ground   GO to Pinpoint Test A
  BCM B1445:15 Rear Park Lamps Output: Circuit Short to Battery or Open   GO to Pinpoint Test A
  BCM B1447:11 Parklamp On Switch Input: Circuit Short to Ground  
REFER to: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).
  BCM B149E:11 Left Front Position/Sidemarker: Circuit Short To Ground   GO to Pinpoint Test A
  BCM B149E:15 Left Front Position/Sidemarker: Circuit Short To Battery or Open   GO to Pinpoint Test A
  BCM B149F:11 Right Front Position/Sidemarker: Circuit Short To Ground   GO to Pinpoint Test A
  BCM B149F:15 Right Front Position/Sidemarker: Circuit Short To Battery or Open   GO to Pinpoint Test A
  BCM B14A2:11 Tailgate/Liftgate Applique Lamps:Circuit Short To Ground   GO to Pinpoint Test A
  BCM B14A2:15 Tailgate/Liftgate Applique Lamps: Circuit Short To Battery or Open   GO to Pinpoint Test A
  BCM B14B2:11 Left Position Lamps: Circuit Short To Ground   GO to Pinpoint Test A
  BCM B14B2:15 Left Position Lamps: Circuit Short To Battery or Open   GO to Pinpoint Test A
  BCM B14B3:11 Right Position Lamps: Circuit Short To Ground   GO to Pinpoint Test A
  BCM B14B3:15 Right Position Lamps: Circuit Short To Battery or Open   GO to Pinpoint Test A
For other BCM Diagnostic Trouble Codes (DTCs) - -  
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

Symptom Charts

Symptom Chart: Parking, Rear and License Plate 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).

Condition Possible Sources Actions
A module does not respond to the diagnostic scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Module
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
One or more parking, signature, rear or license plate lamps are inoperative or always on Refer to the Pinpoint Test   GO to Pinpoint Test A
One or more front LED daytime running lamp/front parking lamp is inoperative or does not dim if DRL are active - mid and high series headlamps only Refer to the Pinpoint Test   GO to Pinpoint Test A

Pinpoint Tests


PINPOINT TEST A : ONE OR MORE PARKING, SIGNATURE, REAR OR LICENSE PLATE LAMPS ARE INOPERATIVE OR ALWAYS ON

Refer to Wiring Diagrams Cell 92 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 Condition
BCM B10F3:11 Left front position light: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH front parking lamps output circuit.
BCM B10F3:15 Left front position light: 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 LH front parking lamps output circuit.
BCM B10F4:11 Right front position light: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH front parking lamps output circuit.
BCM B10F4:15 Right front position light: 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 RH front parking lamps output circuit.
BCM B1445:11 Rear Park Lamps Output: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the license plate lamps output circuit.
BCM B1445:15 Rear Park Lamps Output: 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 license plate lamps output circuit.
BCM B149E:11 Left Front Position/Sidemarker: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH front parking lamps output circuit.
BCM B149E:15 Left Front Position/Sidemarker: 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 LH front parking lamps output circuit.
BCM B149F:11 Right Front Position/Sidemarker: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH front parking lamps output circuit.
BCM B149F:15 Right Front Position/Sidemarker: 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 RH front parking lamps output circuit.
BCM B14A2:11 Tailgate/Liftgate Applique Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the license plate lamps output circuit.
BCM B14A2:15 Tailgate/Liftgate Applique 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 license plate lamps output circuit.
BCM B14B2:11 Left Position Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH front parking lamps output circuit.
BCM B14B2:15 Left Position 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 LH front parking lamps output circuit.
BCM B14B3:11 Right Position Lamps: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH front parking lamps output circuit.
BCM B14B3:15 Right Position 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 RH front parking lamps output circuit.

Possible Sources

  • Wiring, terminals or connectors
  • Headlamp assembly
  • Rear lamp assembly
  • LED control module
  • BCM
A1 DETERMINE IF ALL THE PARKING LAMPS ARE INOPERATIVE
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position and observe all the parking lamps.
  • Place the headlamp switch in the OFF position and observe all the parking lamps.

Are any of the parking lamps always on?
Yes If one or more of the parking lamps are always on, GO to A2
If all the parking lamps are always on, GO to A24
No If the signature or LED DRL/front parking lamp is inoperative, GO to A3
If the front side marker lamp (if equipped) is inoperative, GO to A8
If both license plate lamps only are inoperative, GO to A14
If one license plate lamps are inoperative, VERIFY the license plate bulb(s) are OK. INSTALL new bulb(s) if necessary. If the bulb(s) are OK, REPAIR the liftgate moulding wiring harness. If the harness can not be repaired, INSTALL a new liftgate moulding.
REFER to: Liftgate Moulding (501-08 Exterior Trim and Ornamentation, Removal and Installation). If one of the rear parking lamps is inoperative, GO to A19
If all parking lamps are inoperative, GO to A24

A2 CHECK THE BCM (BODY CONTROL MODULE) PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280F (For front parking, rear parking and side marker lamps).
  • Disconnect: BCM C2280C (For license plate lamps).
  • Ignition ON.

Do the parking lamps continue to illuminate?
Yes REPAIR the affected circuit.
No GO to A24

A3 CHECK FOR VOLTAGE TO THE FRONT SIGNATURE AND LED (LIGHT EMITTING DIODE) DRL (DAYTIME RUNNING LAMPS) /FRONT PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Headlamp C1284 or RH Headlamp C1285.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-4   Ground

    Click to display connectors

      RH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-4   Ground

Is the voltage approximately 2 volts?
Yes GO to A5
No GO to A4

A4 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE FRONT SIGNATURE AND LED (LIGHT EMITTING DIODE) DRL (DAYTIME RUNNING LAMPS) /FRONT PARKING 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 PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-4   Ground

    Click to display connectors

      RH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-4   Ground

Is the voltage approximately 2 volts?
Yes GO to A13
No GO to A6

A5 CHECK THE FRONT SIGNATURE AND LED (LIGHT EMITTING DIODE) DRL (DAYTIME RUNNING LAMPS) /FRONT PARKING LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-4   C1284-8

    Click to display connectors

      RH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-4   C1285-8

Is the voltage approximately 2 volts?
Yes GO to A13
No REPAIR the circuit in question.

A6 CHECK THE FRONT SIGNATURE AND LED (LIGHT EMITTING DIODE) DRL (DAYTIME RUNNING LAMPS) /FRONT PARKING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors

      LH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-4   C2280F-40

    Click to display connectors

      RH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-4   C2280F-36

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

A7 CHECK THE FRONT SIGNATURE AND LED (LIGHT EMITTING DIODE) DRL (DAYTIME RUNNING LAMPS) /FRONT PARKING LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-4   Ground

    Click to display connectors

      RH front signature and LED DRL/front parking lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-4   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A24
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

A8 CHECK FOR VOLTAGE TO THE FRONT SIDE MARKER LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Headlamp C1284 or RH Headlamp C1285.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-5   Ground

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-5   Ground

Is the voltage greater than 11 volts?
Yes GO to A10
No GO to A9

A9 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE FRONT SIDE MARKER 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 PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-5   Ground

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-5   Ground

Is the voltage greater than 11 volts?
Yes GO to A13
No GO to A11

A10 CHECK THE FRONT SIDE MARKER LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-5   C1284-8

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-5   C1285-8

Does the voltage greater than 11 volts?
Yes GO to A13
No REPAIR the circuit in question.

A11 CHECK THE FRONT SIDE MARKER LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-5   C2280F-30

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-5   C2280F-37

Is the resistance less than 3 ohms?
Yes GO to A12
No REPAIR the circuit.

A12 CHECK THE FRONT SIDE MARKER LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1284-5   Ground

    Click to display connectors

      RH Front Side Marker Lamp


    Positive Lead Measurement / Action Negative Lead
      C1285-5   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A24
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

A13 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Connect: Inoperative LH Headlamp C1284 or RH Headlamp C1285.
  • Ignition ON.
  • CLEAR the Diagnostic Trouble Codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Activate the hazard flasher lamp function.
  • Operate the system and determine if the concern is still present.

Is the concern still present or does any Diagnostic Trouble Codes (DTCs) return?
Yes REMOVE the known good LED control module. INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).

A14 CHECK FOR VOLTAGE TO THE LICENSE PLATE LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: For vehicles with rear only parking aid camera, Liftgate Applique C4488.
  • Disconnect: For vehicles equipped with 360 degree camera, Liftgate Applique C4352.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      Vehicles With Rear Only Parking Aid Camera


    Positive Lead Measurement / Action Negative Lead
      C4488-7   Ground

    Click to display connectors

      Vehicles Equipped With 360 Degree Camera


    Positive Lead Measurement / Action Negative Lead
      C4352-3   Ground

Is the voltage greater than 11 volts?
Yes GO to A16
No GO to A15

A15 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE LICENSE PLATE 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 PARKING LAMPS position.
  • Measure:
    Click to display connectors

      Vehicles With Rear Only Parking Aid Camera


    Positive Lead Measurement / Action Negative Lead
      C4488-7   Ground

    Click to display connectors

      Vehicles Equipped With 360 Degree Camera


    Positive Lead Measurement / Action Negative Lead
      C4352-3   Ground

Is the voltage greater than 11 volts?
Yes REPAIR the liftgate moulding wiring harness. If the harness can not be repaired, INSTALL a new liftgate moulding.
REFER to: Liftgate Moulding (501-08 Exterior Trim and Ornamentation, Removal and Installation).
No GO to A17

A16 CHECK THE LICENSE PLATE LAMP GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      Vehicles With Rear Only Parking Aid Camera


    Positive Lead Measurement / Action Negative Lead
      C4488-7   C4488-10

    Click to display connectors

      Vehicles Equipped With 360 Degree Camera


    Positive Lead Measurement / Action Negative Lead
      C4352-3   C4352-2

Is the voltage greater than 11 volts?
Yes REPAIR the liftgate moulding wiring harness. If the harness can not be repaired, INSTALL a new liftgate moulding.
REFER to: Liftgate Moulding (501-08 Exterior Trim and Ornamentation, Removal and Installation).
No REPAIR the circuit.

A17 CHECK THE LICENSE PLATE LAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280C-12   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A18
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

A18 CHECK THE LICENSE PLATE LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors

      Vehicles With Rear Only Parking Aid Camera


    Positive Lead Measurement / Action Negative Lead
      C4488-7   C2280C-12

    Click to display connectors

      Vehicles Equipped With 360 Degree Camera


    Positive Lead Measurement / Action Negative Lead
      C4352-3   C2280C-12

Is the resistance less than 3 ohms?
Yes GO to A24
No REPAIR the circuit.

A19 CHECK THE FOR VOLTAGE TO THE REAR PARKING LAMP
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: Inoperative LH Rear Lamp C414 or RH Rear Lamp C417.
  • Ignition ON.
  • Place the headlamp switch in the PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-3   Ground

Is the voltage greater than 11 volts?
Yes GO to A21
No GO to A20

A20 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE REAR PARKING 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 PARKING LAMPS position.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-3   Ground

Is the voltage greater than 11 volts?
Yes INSTALL a new rear lamp assembly.
REFER to: Rear Lamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No GO to A22

A21 CHECK THE REAR PARKING LAMP GROUND CIRCUIT
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-3   C414-1

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-3   C417-1

Is the voltage greater than 11 volts?
Yes INSTALL a new rear lamp assembly.
REFER to: Rear Lamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REPAIR the circuit in question.

A22 CHECK THE REAR PARKING LAMP SUPPLY CIRCUIT FOR AN OPEN
  • Place the headlamp switch in the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-3   C2280F-30

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-3   C2280F-51

Is the resistance less than 3 ohms?
Yes GO to A23
No REPAIR the circuit in question.

A23 CHECK VOLTAGE CIRCUIT TO THE REAR PARKING LAMP FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors

      LH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C414-3   Ground

    Click to display connectors

      RH Rear Parking Lamp


    Positive Lead Measurement / Action Negative Lead
      C417-3   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A24
No REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation.
If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

A24 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
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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