ECD SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING


  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 in the tool, inspect DLC3.


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  4. CHECK DTC AND FREEZE FRAME DATA Click here

    Tech Tips

    Record or print DTC and freeze frame data, if needed.


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  5. CLEAR DTC AND FREEZE FRAME DATA Click here


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  6. VISUAL INSPECTION


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  7. SETTING CHECK (TEST) MODE DIAGNOSIS Click here


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  8. PROBLEM SYMPTOM CONFIRMATION

    Tech Tips

    If the engine does not start, perform step 10 and 12 first.

    A Malfunction does not occur
    B Malfunction occurs

    B

    GO TO STEP 6
    A

  9. SYMPTOM SIMULATION


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  10. DTC CHECK Click here

    A No code
    B Malfunction code

    B

    AFTER CHECKING MALFUNCTION CODE, GO TO STEP 9
    A

  11. BASIC INSPECTION Click here

    A Not confirm wrong parts
    B Confirm wrong parts

    B

    GO TO STEP 12
    A

  12. PROBLEM SYMPTOM TABLE Click here

    A Confirm wrong circuit
    B Confirm wrong Parts

    B

    GO TO STEP 12
    A

  13. CHECK ECU POWER SOURCE CIRCUIT Click here


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  14. CIRCUIT INSPECTION

    A Not confirm malfunction
    B Confirm malfunction

    B

    GO TO STEP 12
    A

  15. CHECK FOR INTERMITTENT PROBLEM Click here


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  16. IDENTIFICATION OF PROBLEM


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  17. ADJUSTMENT, REPAIR


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  18. CONFIRMATION TEST


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    END