Electronic Climate Control

DTC B1244 or DTC indicator F: An Open in the Rear Air Mix Control Motor Circuit

1. Clear the DTC by turning the ignition switch OFF, and then ON (II).
2. Operate the climate control system in several modes.
3. Check for DTCs using the HDS or self-diagnostic.

Is DTC B1244 or F indicated?

YES - Go to step 4.

NO - Intermittent failure, check for loose wires or poor connections on the rear air mix control motor circuit.

4. Turn the ignition switch OFF.
5. Test the rear air mix control motor.

Is the rear air mix control motor OK?

YES - Go to step 6.

NO - Replace the rear air mix control motor.

6. Disconnect the rear air mix control motor 7P connector.
7. Disconnect the rear climate control unit 22P connector.




8. Check for continuity between following terminals of the rear climate control unit 22P connector and the rear air mix control motor 7P connector.

Is there continuity?

YES - Check for loose wire or poor connections at rear climate control unit 22P connector and at the rear air mix control motor 7P connector. If the connections are good, substitute a known-good rear climate control unit and recheck. If the symptom/indication goes away, replace the original rear climate control unit.

NO - Repair any open in the wire(s) between the rear climate control unit and the rear air mix control motor.