Power Locks: Testing and Inspection

For complete testing of the automatic door lock systems, refer to the proper Body Diagnostic Procedures.

Voltage
The following circuit test sequence determines whether or not voltage is continuous through the body harness to switch.
1. Remove the driver door trim panel.
2. Carefully separate multiple terminal block on wiring harness from switch body.
3. Using a voltmeter, connect the ground lead to the Pin 3 of the door lock connector.
a. Using the positive lead, check Pin 1 of the connector for battery voltage. If OK, go to Step 2. If not OK, check fuse 5 in the Junction Block, if fuse is OK, repair wire as necessary.
b. Check Pin 2 of the connector for battery voltage. If OK, go to Switch Test. If not OK, check fuse 4 in the Junction Block, if fuse is OK, repair wire as necessary.