Ambient Temperature Sensor Circuit Test
WARNING: This page is about a different car, the 2003 Chrysler Concorde, 2003 Chrysler 300M, 2002 Chrysler Concorde, and 2002 Chrysler 300M. 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 negative battery cable. Disconnect the ambient temperature sensor wire harness connector and the BCM wire harness connector.
- Connect a jumper wire between the 2 terminals in the body half of the ambient temperature sensor wire harness connector.
- Check for continuity between the sensor return circuit and the ambient temperature sensor signal circuit cavities of the BCM wire harness connector. There should be continuity. If OK, go to next step. If not OK, repair the open sensor return circuit or ambient temperature sensor signal circuit to the ambient temperature sensor as required.
- Remove the jumper wire from the body half of the ambient temperature sensor wire harness connector. Check for continuity between the sensor return circuit cavity of the BCM wire harness connector and a good ground. There should be no continuity. If OK, go to next step. If not OK, repair the shorted sensor return circuit as required.
- Check for continuity between the ambient temperature sensor signal circuit cavity of the BCM wire harness connector and a good ground. There should be no continuity. If OK, see ELECTRONIC VEHICLE INFORMATION CENTER TEST . If not OK, repair the shorted ambient temperature sensor signal circuit as required.