Seat Back
1. Unplug the 2-way heated seat back wire harness connector.2. Check the continuity between the heated seat driver circuit cavity and the ground cavity of the seat back cover half of the heated seat cushion wire harness connector. If there is continuity go to Step 3, otherwise replace the faulty seat cushion cover.
3. Check the continuity between the heated seat driver circuit cavity of the seat back cover half of the heated seat cushion wire harness connector and the seat back frame. If there isn't any continuity, test the heated seat sensor as described, otherwise replace the faulty seat cushion cover.