Diagnosis And Testing - Heated Seat Module

Refer to  SYSTEM WIRING DIAGRAMS  . The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

1. If a heated seat fails to heat and one or both of the LED indicator lamps on a heated seat switch flash, (Refer to ELECTRICAL/HEATED SEATS - DIAGNOSIS AND TESTING) .
2. Test the appropriate Heated Seat Switch, (Refer to ELECTRICAL/HEATED SEATS/DRIVER HEATED SEAT SWITCH - DIAGNOSIS AND TESTING) .
3. Test the Heated Seat Sensor, (Refer to ELECTRICAL/HEATED SEATS/HEATED SEAT SENSOR - DIAGNOSIS AND TESTING) .
4. Test the Heated Seat Element, (Refer to ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) .
5. Disconnect the heated seat module connector receptacle. Using an ohmmeter, check for continuity between the ground circuit  cavity and a good ground. If OK, go to step  6. If not OK, repair the open ground circuit to ground as required.
6. Place the ignition key in the RUN position. Using a voltmeter, check for voltage on the B+ circuit  cavity. If OK, go to step  7. If not OK, repair the open B+ circuit as required.
7. Using an ohmmeter, check for continuity on the individual circuits between the heated seat module and the inoperative heated seat switch and elements. If OK, replace the heated seat module, (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/MEMORY HEATED SEAT/MIRROR MODULE - REMOVAL) . If not OK, repair the open or shorted circuit between the heated seat module and the inoperative heated seat switch and elements as necessary.