Power Door Lock Switch: Testing and Inspection

The Light-Emitting Diode (LED) illumination lamps for all of the power window and lock switch and bezel unit switch paddles receive battery current through the power window circuit breaker in the junction block. If all of the LED's are inoperative in either or both power window and lock switch and bezel units, refer to Power Window Systems for diagnosis. If only one LED in a power window and lock switch and bezel unit is inoperative, replace the faulty switch and bezel unit.

1. Check the fuse in the fuse block. If OK, go to step Step 2. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
2. Check for battery voltage at the fuse in the fuse block, If OK, go to step Step 3. If not OK, repair the open circuit to the Power Distribution Center (PDC) as required.
3. Disconnect and isolate the battery negative cable. Remove the power window lock switch and bezel unit from the door trim panel. Refer to Power Windows for Door Lock/Window Switch Removal and Installation. Unplug the wire harness connector from the switch and bezel unit.
4. Connect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavities five of the power window and lock switch and bezel unit wire harness connector. If OK, go to step Step 5 If not OK, repair the open circuit from the fuse block to the switch as required.

Fig. 5 Power Door Lock/Window Switch Connector (Switch Side):

Power Lock Switch Continuity:

5. Test the power lock switch continuity. See the Power Lock Switch Continuity charts to determine if the continuity is correct in the Lock and Unlock switch positions. Refer to and the Power Lock Switch Continuity test table. If OK, go to step Step 6. If not OK, replace the faulty switch and bezel unit.
6. Refer to proper Body Diagnostic Procedures for Power Door Locks to diagnose the relays and output to the motors.