C And WINDSHIELD DEFROST

DTC Troubleshooting: B1215 (C and WINDSHIELD DEFROST)

DTC B1215 or DTC indicator C and WINDSHIELD DEFROST:

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 C and WINDSHIELD DEFROST 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 Recirculation Control Motor Test.

Is the recirculation control motor OK?

YES -

Go to step 7.

NO -

Replace the recirculation control motor; '09-10 models, '11 model.�

7. Disconnect the recirculation control motor 7P connector.

8. Disconnect climate control unit connectors A (36P) and B (20P).

9. Check for continuity between the following terminals of climate control unit connectors A (36P), B (20P), and the recirculation control motor 7P connector.









Is there continuity?

YES -

Go to step 10.

NO -

Repair an open in the wire(s) between the climate control unit and the recirculation control motor.�

10. Check for continuity between body ground and climate control unit connector B (20P) terminals No. 18, No. 19, and No. 20 individually.





Is there continuity?

YES -

Repair a short to body ground in the wire(s) between the climate control unit and the recirculation control motor.�

NO -

Go to step 11.

11. Check for continuity between climate control unit connector B (20P) terminals as follows.





Is there continuity between any of the terminals?

YES -

Repair a short in the wire(s).�

NO -

Go to step 12.

12. Reconnect climate control unit connector A (36P).

13. Turn the ignition switch to ON (II), and check the same terminals for voltage to body ground.





Is there any voltage?

YES -

Repair a short to power in the wire(s) between the climate control unit and the recirculation control motor. This short may also damage the climate control unit. Repair a short to power before replace the climate control unit.�

NO -

Check for loose wires or poor connections at climate control unit connectors A (36P) and B (20P) and at the recirculation control motor 7P connector. If the connections are good, 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.�