DTC Troubleshooting: 4

DTC 4:  A Short in the Outside Air Temperature Sensor Circuit

1.Remove the outside air temperature sensor.

2.Test the outside air temperature sensor.

Is the resistance within the specifications shown on the graph?


YES - Go to 3.


NO - Replace the  outside air temperature sensor.n


3.Disconnect the climate control unit 30P connector.

4.Check for continuity between the No. 5 terminal of the climate control unit 30P connector and body ground.

 

Is there continuity?


YES - Repair short to body ground in the wire between the  climate control unit and the  outside air temperature sensor.n


NO - Substitute a known-good  climate control unit, and recheck. If the symptom/indication goes away, replace the original  climate control unit.n