| DTC indicator G: | An Open in the Evaporator Temperature Sensor Circuit |
| 1. | Clear the DTC by turning the ignition switch OFF, and then ON (II). |
| 2. | Operate the climate control system in several modes. |
| 3. | Check for DTCs using the self-diagnostic. Is DTC G indicated? YES - Go to 4. NO - Intermittent failure, check for loose wires or poor connections on the evaporator temperature sensor circuit.n |
| 4. | Turn the ignition switch OFF. |
| 5. | Test the evaporator temperature sensor. Does the evaporator temperature sensor test OK? YES - Go to 6. NO - Replace the evaporator temperature sensor.n |
| 6. | Disconnect climate control unit 28P connector. |
| 7. | Check for continuity between the No. 21 (with ETCS) or No. 22 (without ETCS) terminal of climate control unit 28P connector and the No. 1 terminal of the evaporator temperature sensor 2P connector. With ETCS Without ETCS Is there continuity? YES - NO - Repair open in the wire between the climate control unit and the evaporator temperature sensor.n |
| 8. | Disconnect PCM connector E (31P). |
| 9. | Check for continuity between the No. 12 terminal of PCM connector E (31P) and the No. 1 terminal of the evaporator temperature sensor 2P connector.
Is there continuity? YES - Go to 10. NO - Repair open in the wire between the PCM and the evaporator temperature sensor.n |
| 10. | Check for continuity between the No. 18 terminal of climate control unit 28P connector (with ETCS) or No. 4 terminal of PCM connector E (31P) (without ETCS) and the No. 2 terminal of the evaporator temperature sensor 2P connector. With ETCS Without ETCS Is there continuity? YES - Check for loose wire or poor connections at climate control unit 28P connector (with ETCS), PCM connector E (31P) (without ETCS) and at the evaporator temperature sensor 2P connector. If the connections are good, substitute a known-good climate control unit (with ETCS) or PCM (without ETCS), and recheck. If the symptom/indication goes away, replace the original climate control unit (with ETCS) or PCM (without ETCS).n NO - Repair open in the wire between the climate control unit (with ETCS) or PCM (without ETCS) and the evaporator temperature sensor.n |