B1214

DTC Troubleshooting: B1214 (P)

DTC B1214 or DTC indicator P:

A Short in the Rear Evaporator Temperature Sensor Circuit

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Do the self-diagnostic function with the HDS or the 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 -

With the rear evaporator temperature sensor disconnected, go to step 7.

NO -

Replace the rear evaporator temperature sensor.�

7. Disconnect climate control unit connector A (36P).

8. Check for continuity between climate control unit connector A (36P) terminal No. 28 and body ground.





Is there continuity?

YES -

Repair a 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 (36P) terminals No. 22 and No. 28.





Is there continuity?

YES -

Repair a 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 Climate Control Unit Removal/Installation.�