DTC Troubleshooting: 5

DTC 5:  An Open in the Sunlight Sensor Circuit

1.Disconnect the sunlight sensor 2P connector.

2.Disconnect climate control unit connectors A (12P) and B (16P).

3.Check for continuity between the No. 9 terminal of climate control unit connector A (12P) 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. 5 terminal of climate control unit connector B (16P) 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 climate control unit connectors A (12A) and B (16P).

7.Test the sunlight sensor.

Is the sunlight sensor OK?


YES - Check for loose wires or poor connections at climate control unit connectors A (12P) and B (16P) 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