B1214

DTC B1214 or DTC indicator P: A Short in the Rear Evaporator Temperature Sensor Circuit

1. Clear the DTC with the HDS.
2. Turn the ignition switch to LOCK (0), and then ON (II).
3. Do the self-diagnostic with the HDS or climate control unit.
4. Check for DTCs.

Is DTC B1214 or P indicated?

YES - Go to step 5.

NO - Intermittent failure.

5. Turn the ignition switch to LOCK (0).
6. Remove the rear evaporator temperature sensor, and test it.

Is the rear evaporator temperature sensor OK?

YES - Go to step 7.

NO - Replace the rear evaporator temperature sensor.

7. Disconnect climate control unit connector A (40P) and B (14P).
8. Check for continuity between climate control unit connector B (14P) No. 6 terminal and body ground.






Is there continuity?

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

NO - Go to step 9.

9. Check for continuity between climate control unit connector A (40P) No. 8 terminal and climate control unit connector B (14P) No. 6 terminal.






Is there continuity?

YES - Repair short in the wires between the climate control unit and the rear 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.