Anti-Lock Brake System 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*

Anti-Lock Brake System -- How To Proceed With Troubleshooting


HINT:
  1. The anti-lock brake 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 anti-lock brake system.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

    1. Interview the customer and confirm the trouble.


    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 RM000000XHV0KDX.html for DTC Check/Clear, or LandCruiser RM000000XHY0MPX.html for Freeze Frame Data).

    3. Reconfirm the DTC.

      1. Reconfirm the DTCs based on the recorded output DTCs and freeze frame data (LandCruiser RM000000XHV0KDX.html for DTC Check/Clear, or LandCruiser RM000000XHY0MPX.html for Freeze Frame Data).

        HINT:
        If DTC U0073, U0114 or U0124 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit (LandCruiser RM000000XHS0GHX.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 RM000000XHU0D7X.html).


    NEXT

    GO TO STEP 8


    6.SYMPTOM SIMULATION

    1. Proceed to Check for Intermittent Problems (LandCruiser RM000000XHS0GHX.html).


    NEXT


    7.PROBLEM SYMPTOMS TABLE

    1. Proceed to Problem Symptoms Table (LandCruiser RM000000XHN0IUX.html).


    NEXT


    8.CIRCUIT INSPECTION*

      NEXT


      9.IDENTIFICATION OF PROBLEM

        NEXT


        10.REPAIR OR REPLACEMENT

          NEXT


          11.CONFIRMATION TEST*

            NEXT

            END