Is DTC B1214 or P and MODE indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for loose wires or poor connections in the rear evaporator temperature sensor circuit.?
5. Turn the ignition switch to LOCK (0).
6. Remove the rear evaporator temperature sensor See: Heating and Air Conditioning/Evaporator Temperature Sensor / Switch/Service and
Repair/Rear Evaporator Temperature Sensor Replacement, and test it See: Heating and Air Conditioning/Testing and Inspection/Component
Tests and General Diagnostics/Rear Evaporator Temperature Sensor Test.
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 See: Heating and Air Conditioning/Evaporator Temperature Sensor / Switch/Service and
Repair/Rear Evaporator Temperature Sensor Replacement.?
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 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 (40P) terminal No. 8 and climate control unit connector B (14P) terminal No.
