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Handling Wires and Harnesses
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Five-step Troubleshooting
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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
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How to check for DTCs without the HDS (Use only if the HDS is unavailable)
Special Tools Required
MPCS short connector
07WAZ-0010100
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
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The unit that has stored the code can be identified by the number shown on the odo/trip display.
NOTE: Also you can check the B-CAN communication status by following methods:
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How to Clear the DTCs with the HDS
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How to Clear the DTCs without the HDS
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HDS Inputs and Commands
Certain inputs happen so quickly that the HDS cannot update fast enough. Hold the switch that is being tested while monitoring the Data List. This should give the HDS time to update the signal on the Data List.
Because the HDS software is updated to support the release for newer vehicles it is not uncommon to see system function tests that are not supported.
Make sure that the most current software is loaded.
Input
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HDS Inputs and Commands
Input
Input
Input
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HDS Inputs and Commands
Input
Output
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Loss of Communication DTC cross-reference chart
When an ECU is unable to communicate with the other ECUs on the CAN circuit, the other control units will set loss of communication DTCs. Use this chart to find the control unit that is not communicating.
Bus Off and Internal Error Codes
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