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 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 (22P).




4. Check for continuity between the No. 3 terminal of climate control unit connector B (22P) 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.