VEHICLE STABILITY CONTROL SYSTEM DIAGNOSIS SYSTEM


  1. DESCRIPTION

    When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the intelligent tester to the vehicle and reading various data output from the skid control ECU.

    The skid control ECU stores DTCs when the ECU detects a malfunction in the ECU itself or in its circuits.

    To check the DTCs, connect the intelligent tester to the DLC3 on the vehicle. The intelligent tester enables you to clear the DTCs, activate the various actuators, and check the Freeze Frame Data and Data List.


    1. Check the battery voltage.

      If the voltage is below 11 V, recharge the battery before proceeding to the next step.

    2. DIAGNOSIS


      1. A006STSE02

        If the skid control ECU detects a malfunction, the ABS warning light, brake system warning light (red indicator), slip indicator light and master warning indicator light will come on, and the multi-information display will show warning messages in order to warn the driver.

    3. WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK


      1. Release the parking brake.

        CAUTION:

        When releasing the parking brake, move the shift lever to P (except M/T) or set chocks to hold the vehicle (for M/T) for safety.

        Tech Tips

        When the brake fluid level is low, the brake system warning light (red indicator) comes on.

      2. When the ignition switch is turned to ON, check that the ABS warning light, brake system warning light (red indicator) and slip indicator light come on for approximately 3 seconds.

      3. Check that the initial check message is displayed on the multi-information display.

        If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS warning light, brake system warning light (red indicator), slip indicator light and VSC warning indicator (multi-information display) circuit listed below.

    4. Trouble Area See procedure
      ABS warning light circuit (Remains on)

      Click here

      ABS warning light circuit (Does not come on)

      Click here

      Brake system warning light (red indicator) circuit (Remains on)

      Click here

      Brake system warning light (red indicator) circuit (Does not come on)

      Click here

      VSC warning indicator (multi-information display) circuit (Remains on)

      Click here

      VSC warning indicator (multi-information display) circuit (Does not come on)

      Click here

      Slip indicator light circuit (Remains on)

      Click here

      Slip indicator light circuit (Does not come on)

      Click here