Electronic Climate Control

DTC B1202: Climate Control Unit Internal Error

NOTE:
- Check the battery condition and the charging system.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A.

1. Turn the ignition switch OFF then ON.
2. Turn the climate control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).
3. Check for DTCs using the HDS.

Is DTC B1202 indicated?

YES - The climate control unit is faulty, replace the climate control unit.

NO - Intermittent failure, the climate control unit is OK at this time. Check for loose or poor connections at the climate control unit 30P connector.