How to Troubleshoot MICS

How to display DTC on the gauge control module
  1. While in mode 1, the DTCs which have been detected and stored individually by various B-CAN (Body-controller Area Network) units, will be shown one by one on the ODO display when the communication between the MICU (Multiplex Integrated Control Unit) and the gauge control module is normal. To scroll through the DTCs, press the reset switch on the gauge control module.

How to clear the DTC
  1. While in test mode 1, press and hold down the reset switch for more than 10 seconds.
  1. The unit that has stored the code can be identified by the number shown on the trip display.
    MICU
    10
    Relay control Module
    11
    Door Multiplex Control Unit
    30
    Gauge Control Module
    50
    Climate Control Module
    51
    Combination Switch Control Unit
    70


Self-diagnosis Mode 1 (without the HDS)
  1. Turn the ignition switch ON (II) and move the ceiling light switch is in the center position.
  1. Check self-diagnosis function Mode 1 for a diagnostic trouble code (DTC) by connecting the special tool (A) to the multiplex control inspection connector (MCIC) (B). After about 5 seconds, the ceiling light and ignition key light should come on then blink 0.2 second. This means that you are in Mode 1 of the self-diagnosis function. If the ceiling lights do not blink, check the MCIC ground.

Self-diagnosis Mode 2 (without the HDS)
  1. From Mode 1, disconnected the special tool (A) from the multiplex control inspection connector for about 10 seconds, then reconnect it. The ceiling light and ignition key light should come on for 2 seconds, then blink twice more at 0.2 second intervals. This means the system has gone from Mode 1 to Mode 2.
  1. To cancel Mode 2, disconnect the special tool from the multiplex control inspection connector for more than 10 seconds or turn the ignition switch OFF.