DTC B1202: A/C Control Panel 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 ).

Turn the ignition switch to LOCK (0), then turn to ON (II).
Turn the A/C control system on and operate several functions (A/C ON/OFF, air mix and blend door operations, temperature settings etc.).
Check for DTCs using the HDS.
Is DTC B1202 indicated?

YES - The A/C control panel is faulty, replace the A/C control panel.

NO - Intermittent failure, the A/C control panel is OK at this time. Check for loose or poor connections at A/C control panel connector A (22P).