Code No.C1225 – Wheel Speed Sensor Malfunction (Abnormality in tyre size) MMC Colt

OPERATION

  • The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole sides of the magnets are arranged alternately) for detecting the wheel speed which rotates at the same speed of the wheels and wheel speed sensors. This sensor outputs frequency pulse signals in proportion to the wheel speed.
  • The pulse signals, which the wheel speed sensor creates, are sent to ABS-ECU. ABS-ECU uses the frequency of the pulse signals to determine the wheel speed.

  • DIAGNOSIS CODE SET CONDITIONS


    PROBABLE CAUSES

  • Installation of different size tyres
  • Damaged wiring harness or connector
  • ABS-ECU malfunction

  • DIAGNOSIS PROCEDURE

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

    Q. Is the check result normal?

    STEP 2. Diagnosis code recheck after resetting CAN bus lines

    Q. Is the diagnosis code No.C1225 set?

    STEP 3. Check the installation condition of the wheel and tyres.

    Q. Is the check result normal?

    STEP 4. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code No.C1225 set?

    STEP 5. Check whether the diagnosis code is reset.

    Q. Is the diagnosis code No.C1225 set?

    Author: admin

    Leave a Reply

    Your email address will not be published. Required fields are marked *