Driver Door Ajar Circuit Open
Possible Causes:
- Body Control Module Internal Malfunction
- Driver Door Ajar Switch Ground Circuit Open
- Driver Door Ajar Switch
- Driver Door Ajar Switch Sense Circuit Open
Testing
- Disconnect the Driver Door Ajar switch connector. Using a 12-volt Test Light connected to 12-volts, test the Ground circuit for continuity. Does the light illuminate? If yes, go to next step. If no, repair the Driver Door Ajar Switch Ground circuit for an open. Perform BODY VERIFICATION TEST .
- Disconnect the Driver Door Ajar Switch connector. Connect a jumper wire between the Sense circuit and the Ground circuit. With the DRBIII in Inputs/Outputs, read the DRVR DOOR AJAR SW state. Does the DRBIII(R) display CLOSED? If yes, replace the Driver Door Lock Motor/Ajar Switch. Perform BODY VERIFICATION TEST . If no, go to next step.
- Disconnect the Driver Door Ajar Switch connector. Disconnect the BCM C1 harness connector. Measure the resistance of the Sense circuit between the CTM connector and the Door Ajar Switch connector. Is the resistance below 5.0 ohms? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST . If no, repair the Driver Door Ajar Switch Sense circuit for an open. Perform BODY VERIFICATION TEST .