Diagnosis And Testing - Ambient Temperature Sensor

AMBIENT TEMPERATURE SENSOR

1. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Disconnect the ambient temperature sensor wire harness connector.

2. Measure the resistance of the ambient temperature sensor. At room temperature (approx. 68° F), the sensor resistance should be between 10-13 Kiloohms. The sensor resistance should be between these two values at 68° F. If the resistance is out of range replace the ambient temperature sensor.