Diagnosis And Testing - Heated Seat Element

For complete circuit diagrams, refer to appropriate Wiring Diagrams.

NOTE: When checking heated seat elements for continuity, be certain to move the heating element being checked. Moving the element, such as sitting in the seat will eliminate the possibility of an intermittent open in the element which would only be evident if the element was in a certain position. Failure to check the element in various positions could result in an incomplete test.

Disconnect and isolate the battery negative cable. Disconnect the heated seat module wire harness connector. Check for continuity between the seat heater B+ driver circuit cavity and a good ground, preferably under the seat. There should be continuity, less than 7 ohms. If OK, go to Step 2. If not OK, replace the heating element assembly.
Check for continuity between the seat heater B+ driver circuit cavity and the seat back frame. There should be no continuity. If OK, go to HEATED SEAT MODULE for additional diagnostics. If not OK, replace the element as required.