With Climate Control

DTC Troubleshooting: B1202

DTC B1202:

Climate Control Unit Internal Error

NOTE:

- Check the battery condition Testing and Inspection and the charging system Charging System Indicator Circuit Troubleshooting.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTC with the HDS.

2. Operate the climate control system in several modes.

3. Check for DTCs using the HDS.

Is DTC B1202 indicated?

YES -

The climate control unit is faulty, replace the climate control unit Climate Control Unit Removal/Installation.�

NO -

Intermittent failure, the climate control unit is OK at this time. Check for poor connections at the climate control unit, and at G401.�