DTC I

DTC B1233 or DTC indicator I: An Open in the Driver's Air Mix Control Motor Circuit

1. Clear the DTC.
2. Turn the ignition switch OFF, and then ON (II).
3. Operate the climate control system in several modes.
4. Check the DTCs.

Is DTC B1233 or I Indicated?

YES - Go to step 5.

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

5. Turn the ignition switch OFF.
6. Test the driver's air mix control motor.

Is the driver's air mix control motor OK?

YES - Go to step 7.

NO - Replace the driver's air mix control motor.

7. Disconnect the driver's air mix control motor 7P connector.
8. Disconnect audio-HVAC display panel connector A (22P).
9. Check for continuity between the following terminals of audio-HVAC display panel connector A (22P) and the driver's air mix control motor 7P connector.






Is there continuity?

YES - Check for loose wires or poor connections at audio-HVAC display panel connector A (22P) and at the driver's air mix control motor 7P connector. If the connections are good, substitute a known-good audio-HVAC display panel and recheck. If the symptom/indication goes away, replace the original audio-HVAC display panel.

NO - Repair open in the wire(s) between the audio-HVAC display panel and the driver's air mix control motor.