Mirrors: Testing and Inspection

DIAGNOSIS AND TESTING - POWER MIRRORS

Any diagnosis of the Power Mirror system should begin with the use of scan tool. For information on the use of the scan tool, Testing and Inspection

For complete circuit diagrams, refer to the appropriate wiring information.

1. Check the fuses in the Power Distribution Center (PDC). If OK, go to step 2. If not OK, repair the shorted circuit or component as required and replace the faulty fuse(s).

2. Check for battery voltage at the fuse in the PDC. If OK, go to step 3. If not OK, repair the open circuit to the PDC as required.

3. Disconnect and isolate the battery negative cable. Remove the driver side power window switch and bezel assembly and unplug the wire harness connector from the power mirror switch. Connect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavity in the door wire harness half of the power mirror switch wire harness connector. If OK, go to step 4. If not OK, repair the open circuit.

4. Disconnect and isolate the battery negative cable. Check for continuity between the ground circuit cavity in the door wire harness half of the power mirror switch wire harness connector and a good ground. There should be continuity. If not OK, repair open in the ground circuit.