SFI SYSTEM (w/o Electronic Throttle Control 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 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.


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  5. CLEAR DTC AND FREEZE FRAME DATA


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  6. CONDUCT VISUAL INSPECTION


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  7. CONFIRM PROBLEM SYMPTOMS

    Tech Tips

    If the engine does not start, perform steps 9 and 11 first.

    Result Proceed To
    Malfunction does not occur A
    Malfunction occurs B

    B

    GO TO STEP 9
    A

  8. SIMULATE SYMPTOMS


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  9. CHECK DTC

    Result Proceed To
    Trouble does A
    No code B

    B

    GO TO STEP 11
    A

  10. REFER TO DTC CHART


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    GO TO STEP 13

  11. CONDUCT BASIC INSPECTION

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

    B

    GO TO STEP 16
    A

  12. REFER TO PROBLEM SYMPTOMS TABLE


    B

    GO TO STEP 16
    A

  13. CHECK ECM POWER SOURCE CIRCUIT


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  14. CONDUCT CIRCUIT INSPECTION

    Result Proceed To
    Malfunction not confirmed A
    Malfunction confirmed B

    B

    GO TO STEP 17
    A

  15. CHECK FOR INTERMITTENT PROBLEMS


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    GO TO STEP 17

  16. CONDUCT PARTS INSPECTION


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  17. IDENTIFY PROBLEM


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  18. ADJUST AND/OR REPAIR


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  19. CONDUCT CONFIRMATION TEST


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    END