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Pinpoint Test D: One Or Both High Beams Is Inoperative Or Always On - Low Series Led (Light Emitting Diode) Headlamps

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Refer to Wiring Diagrams Headlamps/Autolamps for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Exterior Lighting - Overview . REFER to: Exterior Lighting - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    BCM B14E5:01 Left Front Enhanced Exterior Lighting System: General Electrical Failure A continuous memory and on-demand DTC that sets when the BCM detects a an internal failure from the LH headlamp.
    BCM B14E5:08 Left Front Enhanced Exterior Lighting System: Bus Signal/Message Failures A continuous memory and on-demand DTC that sets when the BCM detects a message failure from the LH headlamp LED control module.
    BCM B14E5:1C Left Front Enhanced Exterior Lighting System: Circuit Voltage Out Of Range An on-demand DTC that sets when the BCM detects a an internal failure from the LH headlamp LED control module.
    BCM B14E5:49 Left Front Enhanced Exterior Lighting System: Internal Electronic Failure A continuous memory and on-demand DTC that sets when the BCM detects a an internal failure from the LH headlamp LED control module.
    BCM B14E5:55 Left Front Enhanced Exterior Lighting System: Not Configured A continuous memory and on-demand DTC that sets when the BCM detects the LH headlamp LED control module is not configured.
    BCM B14E5:61 Left Front Enhanced Exterior Lighting System: Signal Calculation Failure An on-demand DTC that sets when the BCM detects a an internal failure from the LH headlamp LED control module.
    BCM B14E7:01 Right Front Enhanced Exterior Lighting System: General Electrical Failure A continuous memory and on-demand DTC that sets when the BCM detects a an internal failure from the RH headlamp LED control module.
    BCM B14E7:08 Right Front Enhanced Exterior Lighting System: Bus Signal/Message Failures A continuous memory and on-demand DTC that sets when the BCM detects a message failure from the RH headlamp LED control module.
    BCM B14E7:1C Right Front Enhanced Exterior Lighting System: Circuit Voltage Out Of Range An on-demand DTC that sets when the BCM detects a an internal failure from the RH headlamp LED control module.
    BCM B14E7:49 Right Front Enhanced Exterior Lighting System: Internal Electronic Failure A continuous memory and on-demand DTC that sets when the BCM detects a an internal failure from the RH headlamp LED control module.
    BCM B14E7:55 Right Front Enhanced Exterior Lighting System: Not Configured A continuous memory and on-demand DTC that sets when the BCM detects the RH headlamp LED control module is not configured.
    BCM B14E7:61 Right Front Enhanced Exterior Lighting System: Signal Calculation Failure An on-demand DTC that sets when the BCM detects a an internal failure from the RH headlamp LED control module.

    Possible Sources 

    • Wiring, terminals or connectors
    • LH steering column multifunction switch
    • LED control module
    • Headlamp assembly
    • SCCM
    • BCM

    Visual Inspection and Pre-checks 

    • Inspect the headlamp assembly for damage.

  2. D1 CHECK THE LOW BEAM OPERATION

    • Ignition ON.

    • Place the headlamp switch in the HEADLAMPS position.

    • Place the LH steering column multifunction switch in the high beam position and observe the headlamps.

    • Place the LH steering column multifunction switch in the low beam position and observe the headlamps.

    Do the low beams illuminate? 

    Yes  If an individual high beam is inoperative, GO to  D2 If an individual high beam is always on, GO to  D7 If both high beams are inoperative or always on, GO to  D3
    No  GO to Pinpoint Test B 

  3. D2 CHECK BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

    • Place the LH steering column multifunction switch in the LOW BEAM position and the headlamp switch in the OFF position.

    • Ignition OFF.

    • Disconnect: Inoperative LH Headlamp C1284 or RH Headlamp C1285.

    • Measure:

      LH Headlamp 

      Positive Lead Measurement / Action Negative Lead
      C1284-6
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C2280F-15

      RH Headlamp 

      Positive Lead Measurement / Action Negative Lead
      C1285-6
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C2280F-15

    Is the resistance less than 3 ohms? 

    Yes  GO to  D7
    No  REPAIR the circuit.

  4. D3 CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH INPUT

    • While placing the LH steering column multifunction switch in the HIGH BEAM and LOW BEAM positions

      Access the SCCM and monitor the HIGH_BEAM_SWPID.

    Do the PID values agree with the LH steering column multifunction switch position? 

    Yes  GO to  D4
    No  INSTALL a new LH steering column multifunction switch. REFER to: Steering Column Multifunction Switch LH . TEST the system for normal operation. If the concern still exists, GO to  D9

  5. D4 CHECK BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR A SHORT TO VOLTAGE

    • Place the headlamp switch in the OFF position.

    • Ignition OFF.

    • Disconnect: BCM C2280F.

    • Disconnect: LH Headlamp C1284 and RH Headlamp C1285.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280F-15
      GFD560645Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  D5

  6. D5 CHECK BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280F-15
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  D6
    No  REPAIR the circuit.

  7. D6 CHECK BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280F-15
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C1284-6

    Is the resistance less than 3 ohms? 

    Yes  GO to  D10
    No  REPAIR the circuit.

  8. D7 CHECK THE HEADLAMP

    • Place the LH steering column multifunction switch in the LOW BEAM position and the headlamp switch in the OFF position.

    • Ignition OFF.

    • Substitute the known good headlamp assembly from the opposite side of the vehicle.

    • Ignition ON.

    • Using a diagnostic scan tool, perform the BCM Local Interconnect Network (LIN) New Module Initialization routine.

    • 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.

    • Place the headlamp switch in the HEADLAMPS position and the LH steering column multifunction switch in the HIGH BEAM position.

    • Observe the system and determine if the concern is still present.

    Is the concern still present or do the Diagnostic Trouble Codes (DTCs) return? 

    Yes  GO to  D10
    No  GO to  D8

  9. D8 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE

    • Place the LH steering column multifunction switch in the LOW BEAM position and the headlamp switch in the OFF position.

    • Ignition OFF.

    • Reinstall the original headlamp assembly for the inoperative side of the vehicle.

    • NOTE: Before using known good LED control module, make sure the part label exactly matches the suspect LED control module. If any differences are noted, do not use the module from the opposite side of the vehicle, INSTALL a new LED control module on the suspect headlamp.

      Substitute the known good LED control module from the opposite headlamp.

    • Ignition ON.

    • Using a diagnostic scan tool, perform the BCM Local Interconnect Network (LIN) New Module Initialization routine.

    • 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.

    • Place the headlamp switch in the HEADLAMPS position and the LH steering column multifunction switch in the HIGH BEAM position.

    • Observe the system and determine if the concern is still present.

    Is the concern still present or do the Diagnostic Trouble Codes (DTCs) return? 

    Yes  REMOVE the known good LED control module. INSTALL a new headlamp assembly. REFER to: Headlamp Assembly .
    No  REMOVE the known good LED control module. INSTALL a new LED control module. REFER to: Light Emitting Diode (LED) Control Module .

  10. D9 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

    • Disconnect and inspect all SCCM and all related in-line 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 SCCM and all related in-line 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, INSTALL a new SCCM. Vehicles without adaptive steering, REFER to: Steering Column Control Module (SCCM) . Vehicles with adaptive steering, REFER to: Steering Column Control Module (SCCM) - Vehicles With: Adaptive Steering .
    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.

  11. D10 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Disconnect and inspect all BCM and all related in-line 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 and all related in-line 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) .
    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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