Diagnosis And Testing - Ambient Temperature Sensor
- Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Disconnect the ambient temperature sensor wire harness connector. Refer to the REMOVAL .
- Using an ohm meter, measure the resistance through the ambient temperature sensor. At room temperature (approx. 68°F), the sensor resistance should be between 9-11 kilohms (9000 - 11000 ohms). The sensor resistance should read between these two values. If OK, the sensor is OK at this time. If not OK, replace the faulty ambient temperature sensor.