| DTC indicator 9: | A Short in the Evaporator Temperature Sensor Circuit |
| 1. | Clear the DTC. |
| 2. | Turn the ignition switch OFF, and then ON (II). |
| 3. | Do the self-diagnostic with the HVAC control unit. |
| 4. | Check for DTCs. Is DTC 9 indicated? YES - Go to 5. NO - Intermittent failure.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Remove the evaporator temperature sensor and test it. Is the evaporator temperature sensor OK? YES - Go to 7. NO - Replace the evaporator temperature sensor.n |
| 7. | Disconnect the HVAC control unit 24P connector. |
| 8. | Check for continuity between body ground and the HVAC control unit 24P connector terminals No. 2 and No.13 individually.
Is there continuity? YES - Repair short to body ground in the wires between the HVAC control unit and the evaporator temperature sensor.n NO - Go to 9. |
| 9. | Check for continuity between the HVAC control unit 24P connector terminals No. 2 and No. 13.
Is there continuity? YES - Repair short in the wires between the HVAC control unit and the evaporator temperature sensor.n NO - Substitute a known-good HVAC control unit, and recheck. If the symptom/indication goes away, replace the original HVAC control unit.n |