DTC Troubleshooting: B1235 (L)

DTC B1235 or DTC indicator L:  A Problem in the Air Mix Control Linkage, Door, or Motor

1.Clear the DTC with the HDS.

2.Turn the ignition switch OFF, and then ON (II).

3.Do the self-diagnostic with the HDS or climate control unit.

4.Check for DTCs.

Is DTC B1235 or L indicated?

YES - Go to 5.

NO - Intermittent failure.n

5.Turn the ignition switch OFF.

6.Test the air mix control motor.

Is the 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.n

NO - Replace the air mix control motor, or repair the air mix control linkage or door.n