Seat Temperature Sensor: Testing and Inspection

For complete circuit diagrams, refer to Wiring.
1. Locate the 2nd row seat heated seat module. Refer to Heated Seat Module for information.
2. Back-probe the heated seat module wire harness connector, do not disconnect. With the heated seat system "ON", check the heated seat temperature sensor input cavity for a range in voltage from approx. 1.72 ± 3.0 volts. It should be within this range, If OK go to Step 3. If NOT OK, check for the proper 5 volt supply to the heated seat sensor, from the module. Refer to the Wiring for specific information. If the module has the proper 12v and ground supply and 5 volts is not being supplied to the sensor from the module, replace the heated seat module.
3. Test the seat wire harness between the module connector and the heated seat element wire harness connector for shorted or open circuits. If OK, refer to Diagnosis and Testing the Heated Seat Element, for the proper heated seat element diagnosis and testing procedures. If not OK, repair the shorted or open heated seat wire harness as required.