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