RAM 2500 Truck 4WD V10-8.0L VIN W HDC (2000)
Seat Heater Thermostat: Testing and Inspection
Heated Seat Sensor Replacement
The heated seat module will self-diagnose shorted or open heated seat element circuits and the sensor circuits. Refer to Heated Seat System diagnosis
and testing procedures. To manually check the heated seat element and sensor circuits, proceed as follows. The wire harness connectors for the seat
cushion heated seat element and sensor and for the seat back heated seat element are located under the seat, near the rear edge of the seat cushion frame.
1. Disconnect and isolate the battery negative cable. Disconnect the 4-way heated seat wire harness connector. Using an ohmmeter, check the
resistance between the heated seat sensor input circuit cavity and the heated seat sensor feed circuit cavity in the seat cushion cover half of the
4-way heated seat wire harness connector. The heated seat sensor resistance should be between 1 kOhm and 200 kOhms. If OK, go to Step 2. If
not OK, replace the faulty seat cushion trim cover unit.
2. Test the seat wire harness between the heated seat module connector and the 4-way heated seat wire harness connector for shorted or open circuits.
If OK, refer to Heated Seat Module diagnosis and testing procedures. If not OK, repair the shorted or open heated seat wire harness as required.
