DTC B1202: Climate Control Unit Internal Error

NOTE:

Check the battery condition (see BATTERY TEST ) and the charging system (see 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 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTC with the HDS.
Operate the climate control system in several modes.
Check for DTCs using the HDS.
Is DTC B1202 indicated?

YES -The climate control unit is faulty, replace the climate control unit (see 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 (see DASHBOARD WIRE HARNESS (LEFT BRANCH) ). ■