DTC G

DTC indicator 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 climate control unit connector B (30P).
4. Check for continuity between the No.21 terminal of climate control unit connector B (30P) 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.3 terminal of climate control unit connector B (30P) and the No.1 terminal of the evaporator temperature sensor 2P connector.






Is there continuity?

YES - Check for loose wires or poor connections at climate control unit connector B (30P) 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.