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 See:
Heating and Air Conditioning/Control Assembly/Service and Repair/Climate Control Unit Removal/Installation.?
B1215
DTC Troubleshooting: B1215 (J)
DTC B1215 or DTC indicator J and MODE:
An Open or Short in the Recirculation Control Motor 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 B1215 or J and MODE indicated?
YES -
Go to step 5.
NO -
Intermittent failure, check for loose wires or poor connections in the recirculation control motor circuit.?
5. Turn the ignition switch to LOCK (0).
6. Test the recirculation control motor See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/Recirculation Control Motor Test.
Is the recirculation control motor OK?
YES -
Go to step 7.
NO -
Replace the recirculation control motor See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/Recirculation
Control Motor Replacement.?
7. Disconnect the recirculation control motor 7P connector.
8. Disconnect climate control unit connector A (40P).
