Courtesy Lamps Inoperative From Drivers Front Door Only
Possible Causes are:
- OPEN GROUND WIRE
- OPEN DRIVER DOOR AJAR SWITCH SENSE
- DRIVER DOOR AJAR SWITCH
- DRIVER DOOR MODULE (AJAR SWITCH OPEN)
- BODY CONTROL MODULE DRIVER DOOR AJAR OPEN
- Open the Drivers door. Using the DRBIII(R), select: BODY, DOOR MODULES, INPUT/OUTPUT. Read the Drv Door Ajar Sw state. Does the DRBIII(R) show CLOSED? If yes, go to next step. If no, go to step 3 .
- If there are no possible causes remaining, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- Disconnect the Driver Door Lock Motor/Ajar switch connector Measure the resistance of the ground circuit. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open ground wire to the door ajar switch connector. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- Disconnect the Driver Door Module C1 connector. Disconnect the Door Lock Motor/Ajar Switch connector. Measure the resistance of the Driver Door Ajar Switch Sense circuit between the door lock motor/ajar switch connector and the DDM C1 connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Driver Door Ajar Switch Sense wire. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- Remove the inner door trim panel. Disconnect the Driver Door Module C1 connector. Ensure the door stays open during this test. Measure the resistance of the Driver Door Ajar Switch Sense circuit in the DDM C1 connector to ground. Is the resistance less than 5 ohms? If yes, go to next step. If no, replace the driver door lock motor/ajar switch assembly. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- If there are no possible causes remaining, replace the Driver Door Module. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.