How to Troubleshoot the B-CAN System
  1. After 5 to 10 seconds, the DTCs which have been detected and stored individually by various B-CAN unit, will be indicates one by one on the multi-information display if the communication line between the driver's MICU and the gauge control module is OK. To scroll through the DTCs, press the select/reset button.
The unit that has stored the code can be identified by the number shown on the odometer display.
Control Unit
Control Unit I.D. Number
MICU
10
Gauge control module
50
Heater control unit/Climate control unit
51
Automatic lighting/rain sensor
71
Hands Free Telephone control unit
94
Parking and back-up sensor control unit
9A
Immobilizer-keyless control unit
96

NOTE: Also you can check the B-CAN communication status by following methods:
  • The MICU self-diagnostic function Test Mode 1 and Test Mode 2 can check some communication status and some switch circuits.
  • The gauge control module self-diagnostic function can check the communication status.