U1108 – Combination meter time-out MMC Colt


  • If diagnosis code No.U1108 is set in the ETACS-ECU, diagnose the CAN main bus line.
  • Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

  • TROUBLE JUDGMENT


    COMMENT ON TROUBLE SYMPTOM

  • Connector(s) or wiring harness in the CAN bus lines between the combination meter and the ETACS-ECU, the power supply system to the combination meter, the combination meter itself, or the ETACS-ECU may be defective.

  • PROBABLE CAUSES

  • Malfunction of the combination meter
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

  • DIAGNOSIS PROCEDURE

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

    Q. Is the check result normal?

    STEP 2. Check the diagnosis code of the combination meter

    Q. Is the diagnosis code set?

    STEP 3. M.U.T.-III other system diagnosis code

  • Engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission>
    U1108: Combination meter time-out
  • A/C-ECU
    U1108: Combination meter time-out
  • Multi-centre display unit
    U1108: Combination meter time-out
  • Q. Is the diagnosis code set?

    STEP 4. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

    STEP 5. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

    STEP 6. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

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