DTC Troubleshooting: B1235 (K)

DTC indicator K or DTC B1235: A Problem in the Driver's Air Mix Control Linkage, Door, or Motor

1. Clear the DTC.

1. Turn the ignition switch OFF, and then ON.

1. Operate the climate control system is several modes.

1. Check the DTCs.

Is DTC K or B1235 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure.■

1. Test the driver's air mix control motor.

Is the driver's air mix control motor OK?

YES | - | Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit .■
NO | - | Replace the driver's air mix control motor, or repair the driver's air mix control linkage or door.■