Code No. U0001: Malfunction of CAN communication circuit (Bus off)


DIAGNOSTIC FUNCTION


The CVT-ECU determines that the system is defective if CAN communication information cannot be sent or received.

JUDGEMENT CRITERIA


Bus-off error is detected.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2
Repair the CAN bus lines.

STEP 2. Symptom recheck after erasing diagnosis code

Q. Is the diagnosis code set?
Replace the CVT-ECU.
Intermittent malfunction.