U1128 – Failure information on combination meter MMC Colt


  • If diagnosis code No.U1128 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, the engine-ECU <M/T> or the engine-A-M/T-ECU <Automated manual transmission>, the combination meter, the ETACS-ECU or the output shaft speed sensor may be defective.

  • PROBABLE CAUSES

  • Malfunction of the Engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission>
  • Defective combination meter
  • Malfunction of the ETACS-ECU

  • 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. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

    STEP 4. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code set?

    Author: admin