B1232

DTC B1232 or TE sensor short is indicated.: Short in the Evaporator Temperature Sensor Circuit

1. Clear the DTC with the HDS.
2. Operate the climate control system in several modes.
3. Check for DTCs using the HDS or self-diagnostic.

Is DTC B1232 or TE sensor short indicated?

YES - Go to step 4.

NO - Intermittent failure.

4. Turn the ignition switch OFF.
5. Remove the evaporator temperature sensor and test it.

Is the evaporator temperature sensor OK?

YES - Go to step 6.

NO - Replace the evaporator temperature sensor.

6. Disconnect the climate control unit 40P connector.




7. Check for continuity between the No. 17 terminal of the climate control unit 40P connector 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 - Go to step 8.




8. Check for continuity between the No. 17 terminal and the No. 33 terminal of the climate control 40P connector.

Is there continuity?

YES - Repair short to in the wires 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.