Ambient Temperature Sensor
AMBIENT TEMPERATURE SENSOR1. 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 Kilohms (10000-13000 ohms). The sensor resistance should be between these two values at 68° F. If OK, the sensor is OK at this time. If not OK, replace the faulty ambient temperature sensor.