DTC B1010: MICU Lost Communication (Panic Message) with the Door Multiplex Control Unit

1. Clear the DTCs using the HDS.

1. Cycle the ignition switch to OFF, and then back ON.

1. Check for DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1010 indicated?

YES | - | Go to Step 4 .
NO | - | Intermittent failure, the door multiplex control unit is OK at this time.■

1. Check for DTCs of the relay module by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1059 indicated?

YES | - | Go to the door multiplex control unit input test. ■
NO | - | Check for an open, or a short to power or ground in the communication circuit between the MICU and the combination switch control unit. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open, or short to power or ground.■