Code No.U1073 – Bus Off MMC Colt


  • If diagnosis code No.U1073 is set in the ETACS-ECU, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

  • TROUBLE JUDGMENT


    COMMENT ON TROUBLE SYMPTOM


    PROBABLE CAUSES


    DIAGNOSIS PROCEDURE

    STEP 1. M.U.T.-III CAN bus diagnostics

    Q. Is the check result normal?

    STEP 2. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

    STEP 3. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

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