How to Troubleshoot the MICU

NOTE: Use only if the HDS is unavailable.
System Description

Test Mode 1

The B-CAN communication line can be checked by the Test Mode 1, and the ceiling light indicates a DTC with the blinking pattern.

Test Mode 2

Test Mode 2 can check the switch and sensor circuits connected to the MICU. Some switch and sensor circuits connected to the gauge control module (tach) and immobilizer-keyless control unit can check also when the B-CAN line is normal.