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Pinpoint Test H: The Ambient Lighting Is Inoperative Or Always On

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  1. Refer to INTERIOR LAMPS for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Interior Lighting - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    BCM B145C:11 Ambient Lighting Power Supply Output: Circuit Short To Ground A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the ambient light module conditioned power supply output circuit.
    BCM B145C:15 Ambient Lighting Power Supply 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 ambient light module conditioned power supply output circuit.
    BCM B1465:00 Ambient Lighting Bus 1: No Sub Type Information A continuous memory DTC that sets when the BCM detects a fault on an ambient lighting LIN circuit.
    BCM B1465:96 Ambient Lighting Bus 1: Component Internal Failure A continuous memory DTC that sets when the BCM detects a fault on an ambient lighting LIN circuit.
    BCM B1467:00 Ambient Lighting Bus 3: No Sub Type Information A continuous memory DTC that sets when the BCM detects a fault on an ambient lighting LIN circuit.
    BCM B1467:96 Ambient Lighting Bus 3: Component Internal Failure A continuous memory DTC that sets when the BCM detects a fault on an ambient lighting LIN circuit.

    Possible Sources 

    • Wiring, terminals or connectors
    • Information and entertainment display unit (touchscreen)
    • BCM

  2. H1 CHECK THE INFORMATION AND ENTERTAINMENT DISPLAY UNIT AUDIO CONTROLS

    • Ignition ON.

    • check the operation of the audio system using the information and entertainment display unit controls.

    Does the audio system operate correctly from the information and entertainment display unit controls? 

    Yes  GO to  H2
    No  REFER to: Information and Entertainment System .

  3. H2 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.

    • Using a diagnostic scan tool, perform the BCM self-test.

    Is DTC B1465:00, B1465:96, B1467:00, B1465:96, B145C:11 or B145C:15 present? 

    Yes  For DTC B1465:00 or B1465:96, GO to  H3 For DTC B1467:00 or B1467:96, GO to  H6 For DTC B145C:11, GO to  H9 For DTC B145C:15, GO to  H10
    No  GO to  H12

  4. H3 CHECK THE DOOR AND REAR FOOTWELL AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect BCM C2280B.

    • Disconnect BCM C2280E.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280E-38
      GFD560645Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  H4

  5. H4 CHECK THE DOOR AND FRONT SEAT (REAR FOOTWELL) AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect LH front door ambient lamp C573.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C573-1
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C2280E-38

    Is the resistance less than 3 ohms? 

    Yes  GO to  H5
    No  REPAIR the circuit.

  6. H5 CHECK THE DOOR AND REAR FOOTWELL AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

    • Disconnect RH front door ambient lamp C649.

    • Disconnect For SuperCrew, LH rear door ambient lamp C737.

    • Disconnect For SuperCrew, RH rear door ambient lamp C837.

    • Disconnect For SuperCrew, LH rear footwell lamp C3458.

    • Disconnect For SuperCrew, RH rear footwell lamp C3457.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C573-1
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H12
    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 after all other Diagnostic Trouble Codes (DTCs) have been addressed. REFER to: Body Control Module (BCM) .

  7. H6 CHECK THE AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect BCM C2280B.

    • Disconnect BCM C2280E.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-13
      GFD560645Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  H7

  8. H7 CHECK THE AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect LH front footwell lamp C209.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-13
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C209-2

    Is the resistance less than 3 ohms? 

    Yes  GO to  H8
    No  REPAIR the circuit.

  9. H8 CHECK THE AMBIENT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

    • Disconnect RH front footwell lamp C266.

    • Disconnect RH instrument panel ambient lamp C2476.

    • Disconnect Floor console cup holder ambient lamp C3349.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-13
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H12
    No  REPAIR the circuit.

  10. H9 CHECK THE AMBIENT LIGHTING VOLTAGE CIRCUIT FOR A SHORT TO GROUND

    • Disconnect BCM C2280C.

    • Disconnect LH front door ambient lamp C573.

    • Disconnect RH front door ambient lamp C649.

    • Disconnect For SuperCrew, LH rear door ambient lamp C737.

    • Disconnect For SuperCrew, RH rear door ambient lamp C837.

    • Disconnect For SuperCrew, LH rear footwell lamp C3458.

    • Disconnect For SuperCrew, RH rear footwell lamp C3457.

    • Disconnect LH front footwell lamp C209.

    • Disconnect RH front footwell lamp C266.

    • Disconnect RH instrument panel ambient lamp C2476.

    • Disconnect Floor console cup holder ambient lamp C3349.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-4
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H12
    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 after all other Diagnostic Trouble Codes (DTCs) have been addressed. REFER to: Body Control Module (BCM) .

  11. H10 CHECK THE AMBIENT LIGHTING VOLTAGE CIRCUIT FOR AN OPEN

    • Disconnect BCM C2280C.

    • Disconnect LH front footwell lamp C209.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-4
      GFD560648Courtesy of FORD MOTOR COMPANY
      		 C209-1

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H11
    No  REPAIR the circuit.

  12. H11 CHECK THE AMBIENT LIGHTING VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-4
      GFD560645Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  H12

  13. H12 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Disconnect and inspect all BCM connectors and 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 connectors and 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. CLEAR the Diagnostic Trouble Codes (DTCs).
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