How to Troubleshoot the B-CAN System
Troubleshoot the B-CAN Circuit Related Problems
How to check for DTCs with the HDS (preferred method)
The HDS can check the F-CAN and B-CAN communication status, read and clear the DTCs, display the data list, and perform function test.
Check for DTCs
  1. Connect the HDS to the data link connector (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with vehicle.
    NOTE: If the HDS does not communicate with the vehicle, troubleshoot the DLC circuit.
  1. Select the BODY ELECTRICAL, then select the desired TEST MODE menu, and check the DTCs. If the DTCs do not pertain to the select menu, select the All DTC Check icon to view all Body DTCs.
    NOTE: For specific operations, refer to the HDS user's manual.
  1. If any DTCs are indicated, go to the indicated DTCs troubleshooting.
    NOTE: If the DTC B1000 is stored, troubleshoot the DTC B1000 first.
How to check for DTCs without the HDS (Use only if the HDS is unavailable)
Special Tools Required
If the HDS is unavailable, using the following method, you can check the B-CAN communication status, DTCs, and some F-CAN communication status related with the gauge control module.

Check for DTCs

  1. Turn the ignition switch to ON (II).
  1. Connect the MPCS short connector (A) to the MICU service check connector (B), and turn the switch (C) ON.
  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:
How to Clear the DTCs with the HDS
  1. Connect the HDS to the data link connector (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0), and disconnect the HDS from the data link connector (DLC).
How to Clear the DTCs without the HDS
  1. While in DTCs indication status, press and hold the SELECT/RESET switch for more than 10 seconds.
  1. Turn the MPCS short connector switch off, and disconnect the connector from the MICU service check connector.
  1. Turn the ignition switch to LOCK (0).