DTC G

DTC indicator light G: An open in the evaporator temperature sensor circuit

1. Disconnect the evaporator temperature sensor 2P connector.




2. Measure the resistance between the No.1 and No.2 terminals of the evaporator temperature sensor.

Is the resistance within the specifications shown on the graph?

YES - Go to step 3.

NO - Replace the evaporator temperature sensor.

3. Disconnect the climate control unit 20P connector.




4. Check for continuity between the No.14 terminal of the climate control unit 20P connector and the No.2 terminal of the evaporator temperature sensor 2P connector.

Is there continuity?

YES - Go to step 5.

NO - Repair open in the wire between the climate control unit and the evaporator temperature sensor.




5. Check for continuity between the No.11 terminal of the climate control unit 20P connector and the No.1 terminal of the evaporator temperature sensor 2P connector.

Is there continuity?

YES - Check for loose wires or poor connections at the climate control unit 20P connector and at the evaporator temperature 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.

NO - Repair open in the wire between the climate control unit and the evaporator temperature sensor.