ECD SYSTEM (w/ EGR Cooler Bypass Valve) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS


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  3. CONNECT INTELLIGENT TESTER TO DLC3

    Tech Tips

    If the display indicates a communication fault with the tester, inspect the DLC3.


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  4. CHECK DTC AND FREEZE FRAME DATA*

    Tech Tips

    Record or print DTCs and freeze frame data if necessary.


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  5. CLEAR DTC AND FREEZE FRAME DATA*


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  6. VISUAL INSPECTION


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  7. CONFIRM PROBLEM SYMPTOMS

    Tech Tips

    If the engine does not start, first perform the "Check DTC" procedures and "Basic Inspection" procedures below.

    Result
    Result Proceed to
    Malfunction occurs A
    Malfunction does not occur B

    B

    SIMULATE SYMPTOMS
    A

  8. CHECK DTC*

    Result
    Result Proceed to
    Trouble code A
    No trouble code B

    B

    Go to step 9
    A
    REFER TO DTC CHART

  9. BASIC INSPECTION

    Result
    Result Proceed to
    Malfunctioning parts not confirmed A
    Malfunctioning parts confirmed B

    B

    Go to step 11
    A

  10. REFER TO PROBLEM SYMPTOMS TABLE

    Tech Tips


    • Refer to the Problem Symptoms Table Click here.

    • Also, refer to the inspection procedure for the problem symptom.


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  11. PARTS INSPECTION


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  12. IDENTIFY PROBLEM


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  13. ADJUST AND/OR REPAIR


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  14. CONFIRMATION TEST


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    END