DTC Troubleshooting: 5

DTC 5:  An Open in the Sunlight Sensor Circuit

1.Disconnect the sunlight sensor 2P connector.

2.Disconnect the climate control unit 36P connector.

3.Check for continuity between the No. 6 terminal of the climate control unit 36P connector and the No. 1 terminal of the sunlight sensor 2P connector.

 


Is there continuity?


YES - Go to 4.


NO - Repair open in the wire between the climate control unit and the sunlight sensor.n

4.Check for continuity between the No. 2 terminal of the climate control unit 36P connector and the No. 2 terminal of the sunlight sensor 2P connector.

 


Is there continuity?


YES - Go to 5.


NO - Repair open in the wire between the climate control unit and the sunlight sensor.n


5.Reconnect the sunlight sensor 2P connector.

6.Reconnect the climate control unit 36P connector.

7.Test the sunlight sensor.

Is the sunlight sensor OK?


YES - Check for loose wires or poor connections at the climate control unit 36P connector and at the sunlight sensor 2P connector. If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original  climate control unit.n


NO - Replace the sunlight sensor.n