DTC H

DTC indicator H: A Short in the Evaporator Temperature Sensor Circuit

1. Disconnect the evaporator temperature sensor 2P connector.
2. Test the evaporator temperature sensor.

Is the rear evaporator temperature sensor OK?

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 body ground.






Is there continuity?

YES - Repair short to body ground in the wire between the climate control unit and the evaporator temperature sensor.

NO - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit.