B1235

DTC Troubleshooting: B1235 or DrA/M motor lock is indicated

DTC B1235 or DrA/M motor lock is indicated:A Problem in the Driver's Air Mix Control Linkage, Door, or Motor

1. Clear the DTC with the HDS.

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Do the self-diagnostic with the HDS Initial Inspection and Diagnostic Overview or the climate control unit. Initial Inspection and Diagnostic Overview

4. Check for DTCs.

Is DTC B1235 or DrA/M motor lock indicated?
YES - Go to step 5.

NO - Intermittent failure.


5. Turn the ignition switch to LOCK (0).

6. Test the driver's air mix control motor. Driver's Air Mix Control Motor Test

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. Service and Repair

NO - Replace the driver's air mix control motor, Driver's Air Mix Control Motor Replacement or repair the driver's air mix control linkage or door.