VEHICLE STABILITY CONTROL SYSTEM(for Vacuum Brake Booster) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • The vehicle stability control system troubleshooting procedures are based on the premise that the CAN communication system is functioning normally. Check the CAN communication system first before troubleshooting the vehicle stability control system.

  • *: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer and confirm the trouble.

      Tech Tips

      Interview the customer to confirm the following:


      • History of brake fluid replacement.

      • Whether the engine was stopped intentionally when driving.

      • Whether the brake and accelerator pedals were depressed simultaneously.

      Result
      Proceed to
      NEXT

    NEXT

  3. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

    Result
    Proceed to
    NEXT

    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check and record output DTCs and the freeze frame data.

    2. Clear the DTCs and freeze frame data (See page for DTC Check/Clear, or Click here for Freeze Frame Data).

    3. Reconfirm the DTCs.


      1. Reconfirm the DTCs based on the recorded output DTCs and freeze frame data (See page for DTC Check/Clear, or Click here for Freeze Frame Data).

        Tech Tips

        If DTC U0073, U0100, U0114, U0123, U0124 or U0126 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit Click here.

        Result
        Result Proceed to
        DTC output A
        DTC not output (Problem symptom does not occur) B
        DTC not output (Problem symptom occurs) C

    B

    SYMPTOM SIMULATION Click here

    C

    PROBLEM SYMPTOMS TABLE Click here

    A

  5. DIAGNOSTIC TROUBLE CODE CHART


    1. Proceed to Diagnostic Trouble Code Chart Click here.

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 8 Click here

  6. SYMPTOM SIMULATION


    1. Proceed to Check for Intermittent Problems Click here.

      Result
      Proceed to
      NEXT

    NEXT

  7. PROBLEM SYMPTOMS TABLE


    1. Proceed to Problem Symptoms Table Click here.

      Result
      Proceed to
      NEXT

    NEXT

  8. CIRCUIT INSPECTION*

    Result
    Proceed to
    NEXT

    NEXT

  9. IDENTIFICATION OF PROBLEM

    Result
    Proceed to
    NEXT

    NEXT

  10. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  11. CONFIRMATION TEST*

    Result
    Proceed to
    NEXT

    NEXT

    END