P

DTC Troubleshooting: B1214 or Indicator P

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 to ON (II).

3. Do the self-diagnostic function with the HDS Initial Inspection and Diagnostic Overview or climate control unit. Initial Inspection and Diagnostic Overview

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, Rear Evaporator Temperature Sensor Replacement and test it. Rear Evaporator Temperature Sensor Test

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) terminal No. 6 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) terminal No. 8 and climate control unit connector B (14P) terminal No. 6.

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.