ELECTRONICALLY CONTROLLED BRAKE SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
*: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

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    2.CUSTOMER PROBLEM ANALYSIS

    1. Interview the customer and confirm the problem (Click here).


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    3.CHECK DTC AND FREEZE FRAME DATA*

    1. Check and record DTCs and Freeze Frame Data.

    2. Clear the DTCs and Freeze Frame Data (Click here for DTC Check/Clear, and Click here for Freeze Frame Data).

    3. Reconfirm the DTCs.

      1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data (Click here for DTC Check/Clear, and Click here for Freeze Frame Data).

        HINT:
        1. When DTCs indicating CAN communication system malfunctions are output, repair the CAN communication system before repairing each corresponding sensor (Click here).
        2. If any of DTCs U0123/62, U0124/95, U0126/63, and U0293/59 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit (Click here).
        3. If the intelligent tester cannot communicate with the skid control ECU, inspect the CAN communication system (Click here).
        4. If there is no response from the skid control ECU, inspect the IG1 circuit of the skid control ECU (Click here).


        Result:

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



    		B.
    Go to step 5

    		C.
    Go to step 6
    A


    4.DIAGNOSTIC TROUBLE CODE CHART

    1. Proceed to Diagnostic Trouble Code Chart (Click here).


    NEXT

    Go to step 7


    5.SYMPTOM SIMULATION

    1. Proceed to How to Proceed with Troubleshooting (Click here).


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    6.PROBLEM SYMPTOMS TABLE

    1. Proceed to Problem Symptoms Table (Click here).


    NEXT


    7.CIRCUIT INSPECTION*

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      8.IDENTIFICATION OF PROBLEM

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        9.REPAIR OR REPLACEMENT

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          10.CONFIRMATION TEST*

            NEXT

            END