Multiplex Integrated Control System Description - Control/Function

Self-diagnostic Function 

The MICU provides the self-diagnostic function for checking the communication and input systems.

MICU 

Communication Check (Self-diagnostic Mode 1): When the B-CAN BUS is disconnected, or the connection to the gauge control module failed, the error code is shown with the number of blinks of the ceiling light.

HDS Diagnostics 

The HDS connects to the data link connector (DLC) to communicate with the vehicle's control units. This allows the HDS to retrieve DTCs, diagnostic data, or transmit forced commands during output function tests.

Customize Memory Function 

The MICU has a feature that allows the settings of certain outputs to be customized to user preferences with the HDS or multi-information display (MID).