Vehicle Stability Control System (For Vacuum Brake Booster) How To Proceed With Troubleshooting

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. INSPECT BATTERY VOLTAGE

  4. CHECK DTC AND FREEZE FRAME DATA*

  5. DIAGNOSTIC TROUBLE CODE CHART

  6. SYMPTOM SIMULATION

  7. PROBLEM SYMPTOMS TABLE

  8. CIRCUIT INSPECTION*

  9. IDENTIFICATION OF PROBLEM

  10. REPAIR OR REPLACEMENT

  11. CONFIRMATION TEST*

Vehicle Stability Control System (For Vacuum Brake Booster) -- How To Proceed With Troubleshooting


HINT:
  1. 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.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

    1. Interview the customer and confirm the trouble.

      HINT:
      Interview the customer to confirm the following:
      1. History of brake fluid replacement.
      2. Whether the engine was stopped intentionally when driving.
      3. Whether the brake and accelerator pedals were depressed simultaneously.

    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.

    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 (LandCruiser RM000000XHV0KEX.html for DTC Check/Clear, or LandCruiser RM000000XHY0MRX.html for Freeze Frame Data).

    3. Reconfirm the DTCs.

      1. Reconfirm the DTCs based on the recorded output DTCs and freeze frame data (LandCruiser RM000000XHV0KEX.html for DTC Check/Clear, or LandCruiser RM000000XHY0MRX.html for Freeze Frame Data).

        HINT:
        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 (LandCruiser RM000000XHS0GIX.html).
        Result
        Result
        		Proceed to
        DTC output
        		A
        DTC not output (Problem symptom does not occur)
        		B
        DTC not output (Problem symptom occurs)
        		C


    		B.
    GO TO STEP 6

    		C.
    GO TO STEP 7
    A


    5.DIAGNOSTIC TROUBLE CODE CHART

    1. Proceed to Diagnostic Trouble Code Chart (LandCruiser RM000000XHU0D8X.html).


    NEXT

    GO TO STEP 8


    6.SYMPTOM SIMULATION

    1. Proceed to Check for Intermittent Problems (LandCruiser RM000000XHS0GIX.html).


    NEXT


    7.PROBLEM SYMPTOMS TABLE

    1. Proceed to Problem Symptoms Table (LandCruiser RM000000XHN0IVX.html).


    NEXT


    8.CIRCUIT INSPECTION*

      NEXT


      9.IDENTIFICATION OF PROBLEM

        NEXT


        10.REPAIR OR REPLACEMENT

          NEXT


          11.CONFIRMATION TEST*

            NEXT

            END