DTC H

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

1. Clear the DTC.
2. Turn the ignition switch OFF, and then ON.
3. Operate the climate control system is several modes.
4. Check the DTCs.

Is DTC H or B1232 indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Disconnect the evaporator temperature sensor 2P connector.
6. Test the evaporator temperature sensor.

Is the resistance within the specifications shown on the graph?

YES - Go to step 7.

NO - Replace the evaporator temperature sensor.

7. Disconnect audio-HVAC display panel connector A (22P).




8. Check for continuity between the No.14 terminal of audio-HVAC display panel connector A (22P) and body ground.

Is there continuity?

YES - Repair short to body ground in the wire between the audio-HVAC display panel and the evaporator temperature sensor.

NO - Substitute a known-good audio-HVAC display panel, and recheck. If the symptom/indication goes away, replace the original audio-HVAC display panel.