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02 SJC8AH7K711000Y1231FAAT00 − − − − − − − − YES NO YES NO YES NO YES NO DTC B1231 or DTC indicator G: 21-108 21-108 Climate Control DTC Troubleshooting (cont’d) CLIMATE CONTROL UNIT 30P CONNECTOR ORN RED/BLK 8. Check for continuity between the climate control unit 30P connector No. 10 and No. 22 terminals. Repair short in the wires between the climate control unit and the sunlight sensor. Go to step 9. 9. Reconnect the sunlight sensor 2P connector. 10. Reconnect the climate control unit 30P connector. 11. Test the sunlight sensor (see page 21-134). Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, Replace the sunlight sensor (see page 21-134). 1. Clear the DTC with the HDS. 2. Operate the climate control system in several modes. 3. Check for DTCs using the HDS or self-diagnostic. Go to step 4. Intermittent failure, check for loose wires or poor connections on the evaporator temperature 4. Turn the ignition switch OFF. 5. Remove the evaporator temperature sensor (see page 21-53) and test it (see page 21-53). Go to step 6. Replace the evaporator temperature sensor. An Open in the Evaporator Temperature Sensor Circuit Wire side of female terminals Is ther e continuity? Is the sunlight sensor OK ? Is DT C B1231 or G indicated? Is the evapor ator temper atur e sensor OK ? |