Diagnosis And Testing - Power Seat System

Operate the power seat switches and power lumbar support switch. Move the seat, seat back and power lumbar support in all directions. The seat and lumbar support should move in each of the selected directions. If any of the power seat or lumbar support motors fail to operate in more than one direction, proceed as follows:

1. Inspect the power seat and power lumbar motor to ensure the wire harness connectors are fully connected to the motor. If OK, go to Step 2  . If not OK, connect the wire harness connector(s).
2. Check the power seat fuse in the Power Distribution Center (PDC). If OK, go to Step 3  . If not OK, replace the fuse.
3. Remove the power seat switch and/or power lumbar switch from the seat cushion side panel. Check for battery voltage at the fused B(+) circuit cavity of the switch wire harness connector. If OK, go to Step 4  . If not OK, repair the open circuit as required.
4. Check for continuity between the ground circuit cavity of the power seat switch or power lumbar switch wire harness connector and a good ground. There should be continuity. If OK, go to Step 5  . If not OK, repair the open circuit to ground as required.
5. Test the power seat switch and power lumbar switch. If the switch tests OK, check the wire harness between the switch and the motor(s) (See Wiring information). If the circuits check OK, replace the inoperative power seat track or the seat back assembly. If the circuits are not OK, repair the wire harness as required.