SFI SYSTEM 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 THE DLC3*

    Tech Tips

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

    When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.


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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*

    Tech Tips

    Refer to the relevant pages Click here.


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  6. CONDUCT VISUAL INSPECTION


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  7. SET CHECK MODE DIAGNOSIS*


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  8. CONFIRM PROBLEM SYMPTOMS

    Tech Tips

    If the engine does not start, first perform the Check for DTC procedure and Conduct Basic Inspection procedure below.

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

    B
    A
  9. SIMULATE SYMPTOMS


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  10. CHECK FOR DTC*

    Tech Tips

    Refer to the relevant pages Click here.

    Result
    Result Proceed to
    Trouble code A
    No code B

    B
    A
  11. REFER TO DTC CHART

    Tech Tips

    Refer to the relevant pages Click here.


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  12. CONDUCT BASIC INSPECTION

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

    B
    A
  13. REFER TO PROBLEM SYMPTOMS TABLE

    Result
    Result Proceed to
    Malfunctioning circuit confirmed A
    Malfunctioning parts confirmed B

    B
    A
  14. CHECK ECM POWER SOURCE CIRCUIT

    Tech Tips

    Refer to the relevant pages Click here.


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  15. CONDUCT CIRCUIT INSPECTION

    Result
    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    B
    A
  16. CHECK FOR INTERMITTENT PROBLEMS


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  17. CONDUCT PARTS INSPECTION


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  18. IDENTIFY PROBLEM


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  19. ADJUST AND/OR REPAIR


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  20. CONDUCT CONFIRMATION TEST


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