B1232

DTC B1232 or DTC indicator H: A Short in the Evaporator Temperature Sensor Circuit

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

Is DTC B1232 or H indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Turn the ignition switch OFF.
6. Remove the evaporator temperature sensor.
7. Test the evaporator temperature sensor.

Is the evaporator temperature sensor OK?

YES - Go to step 8.

NO - Replace the evaporator temperature sensor.

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




9. 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.