Power Seat Control Module: Testing and Inspection

If a heated seat heats but one or both indicator lamps on the heated seat switch fail to operate, test the heated seat switch. If the heated seat switch checks OK, proceed as follows.
1. Check the heated seat element.
2. Check the heated seat sensor.
3. Using a voltmeter, back probe the appropriate heated seat module connector, do not disconnect. Check for battery voltage at the appropriate pin cavities. If OK go to Step 4. If not OK, repair the open or shorted voltage supply circuit as required.
4. Using a ohmmeter, back probe the appropriate heated seat module connector, do not disconnect. Check for proper continuity to ground on the ground pin cavities. Continuity should be present. If OK replace the heated seat module. If Not OK, repair the open or shorted ground circuit as required.