Ambient Temperature Sensor Test
WARNING: This page is about a different car, the 2002 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
- 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 -40°F (-40°C), the sensor resistance is 336 kilohms. At 140°F (55°C), the sensor resistance is 2.5 kilohms. The sensor resistance should read between these 2 values. If OK, see AMBIENT TEMPERATURE SENSOR CIRCUIT TEST . If not OK, replace the faulty ambient temperature sensor.