Heated Seat Element

TEST
Resistor Wire Element
1. Disconnect and isolate the battery negative cable. Disconnect the heated seat cushion element wire harness connector from the power seat wire harness. The power seat wire harness connectors for the seat cushion and seat back heating elements are secured to a bracket located under the rear edge of the seat cushion frame.
2. Check for continuity between the seat heater B(+) driver circuit cavity of the 4-way heated seat cushion element wire harness connector and the seat cushion frame. There should be no continuity. If OK, go to Step 3. If not OK, replace the faulty seat cushion cover trim and element unit.
3. Check for continuity between the seat heater B(+) driver circuit and the heated seat driver circuit cavities of the 4-way heated seat cushion element wire harness connector. There should be continuity. If OK, go to Step 4. If not OK, replace the faulty seat cushion cover trim and element unit.
4. Disconnect the C2 connector of the power seat wire harness from the Heated Seat Module (HSM) or Memory Heated Seat Module (MHSM) connector receptacle. Check for continuity between the seat heater B(+) driver circuit cavity of the 4-way power seat wire harness connector for the heated seat cushion element and the seat cushion frame. There should be no continuity. If OK, go to Step 5. If not OK, repair the shorted seat heater B(+) driver circuit as required.
5. Check for continuity between the seat heater B(+) driver circuit cavities of the 4-way power seat wire harness connector for the heated seat cushion element and the C2 power seat wire harness connector for the HSM or MHSM. There should be continuity. If OK, go to Step 6. If not OK, repair the open seat heater B(+) driver circuit as required.
6. Disconnect the 2-way heated seat back element wire harness connector from the power seat wire harness. The power seat wire harness connectors for the seat cushion heating element and the seat back heating element are secured to a bracket located under the rear edge of the seat cushion frame.
7. Check for continuity between the heated seat driver circuit cavity of the 2-way power seat wire harness connector for the heated seat back element and the seat cushion frame. There should be no continuity. If OK, go to Step 8. If not OK, repair the shorted heated seat driver circuit as required.
8. Check for continuity between the heated seat driver circuit cavities of the 2-way power seat wire harness connector for the heated seat back element and the 4-way power seat wire harness connector for the heated seat cushion element. There should be continuity. If OK, go to Step 9. If not OK, repair the open heated seat driver circuit as required.
9. Check for continuity between the heated seat driver circuit cavity of the 2-way heated seat back element wire harness connector and the seat cushion frame. There should be no continuity. If OK, go to Step 10. If not OK, replace the faulty seat back cover trim and element unit.
10. Check for continuity between the driver seat heater ground circuit cavity of the 2-way power seat wire harness connector for the heated seat back element and the seat cushion frame. There should be no continuity. If OK, go to Step 11. If not OK, repair the shorted driver seat heater ground circuit as required.
11. Check for continuity between the driver seat heater ground circuit cavities of the 2-way power seat wire harness connector for the heated seat back element and the C2 power seat wire harness connector for the HSM or MHSM. There should be continuity. If OK, refer to Heated Seat Sensor in the Diagnosis and Testing. If not OK, repair the open driver seat heater ground circuit as required.