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PINPOINT TEST B : The Courtesy Lamps Do Not Illuminate With The Liftgate Open

    NOTE: Make sure that the dark car feature is not enabled in the BCM. The dark car feature disables activation of courtesy lamps due to a door unlock, door ajar or removing the key from the ignition cylinder. The feature can be disabled using a scan tool.

  1. B1 CHECK THE COURTESY LAMP OPERATION FROM ANY DOOR
    • Ignition OFF.
    • Open any door and observe the courtesy lamps.

    Do the courtesy lamps illuminate? 

    Yes  GO to  B2.
    No  GO to Pinpoint Test A .

  2. B2 CHECK THE LTM OR THE LIFTGATE LATCH

    • Disconnect: Liftgate Latch C4174B.

    Do the courtesy lamps illuminate? 

    Yes  GO to  B4.
    No  GO to  B3.

  3. B3 CHECK THE LIFTGATE AJAR INPUT CIRCUIT FOR A SHORT TO GROUND

    • Disconnect: BCM C2280C.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-19
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B5.
    No  REPAIR the circuit.

  4. B4 CHECK FOR CORRECT LTM OPERATION

    • Disconnect the LTM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • corrosion (install new connector or terminals - clean module pins)
      • pushed-out pins - install new pins as necessary
    • Reconnect the LTM connectors and 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 TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new LTM. REFER to Body Closures .
    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 DTCs.

  5. B5 CHECK FOR CORRECT BCM OPERATION

    • Disconnect the BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • corrosion (install new connector or terminals - clean module pins)
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM connectors and 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 TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to Multifunction Electronic Modules - Without Intelligent Access or REFER to Multifunction Electronic Modules - With Intelligent Access .
    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 DTCs.
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