Seat Temperature Sensor: Testing and Inspection

NOTE: Any resistance values (ohms V) given in the following text are supplied using the automatic range generated by a FLUKE (T) automotive meter. If another type of measuring device is used the values generated may not be the same as the results shown here, or may have to be converted to the range used here.

1. Position the driver seat in the full rearward position.
2. Backprobe the heated seat module wire harness connector, do not disconnect. Disconnecting the module will disable the entire heated seat system. Using an voltmeter, check the voltage of the seat temperature sensor input cavity of the heated seat module wire harness connector. The seat sensor input voltage should be between 1.7 volts and 3.0 volts with the system ON. If OK, go to Step 3. If not OK, replace the faulty seat cushion heating element and sensor assembly.
3. Test the seat wire harness between the heated seat module connector and the heated seat wire harness connector for shorted or open circuits. If OK, refer to Diagnosis and Testing the Heated Seat Module in Electronic Control Modules, for the proper heated seat module diagnosis and testing procedures. If not OK, repair the shorted or open heated seat wire harness as required.