SFI SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    NEXT

  3. CONNECT GTS TO DLC3*

    Tech Tips

    If the display indicates a communication malfunction, inspect the DLC3.

    If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.


    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check for DTCs Click here.

    2. Check for freeze frame data Click here.

      Tech Tips

      Record or print DTCs and freeze frame data if necessary.


      NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*


    1. Clear the DTCs and freeze frame data Click here.


      NEXT

  6. CONDUCT VISUAL INSPECTION


    NEXT

  7. SELECT CHECK MODE DIAGNOSIS*


    1. Switch the ECM from normal mode to check mode Click here.


      NEXT

  8. CONFIRM PROBLEM SYMPTOMS


    1. Confirm problem symptoms.

      Tech Tips

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

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

      B

      GO TO STEP 10
      A

  9. SIMULATE SYMPTOMS

    Tech Tips

    Refer to Symptom Simulation Click here.


    NEXT

  10. CHECK DTC*


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTCs are output A
      DTCs are not output B

      B

      GO TO STEP 12
      A

  11. REFER TO DTC CHART

    Tech Tips

    Refer to Diagnostic Trouble Code Chart Click here.


    NEXT

  12. CONDUCT BASIC INSPECTION


    1. Conduct basic inspection Click here.

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

      B

      GO TO STEP 17
      A

  13. REFER TO PROBLEM SYMPTOMS TABLE

    Tech Tips

    Refer to Problem Symptoms Table Click here.

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

    B

    GO TO STEP 17
    A

  14. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit Click here.


      NEXT

  15. CONDUCT CIRCUIT INSPECTION

    Result
    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    B

    GO TO STEP 18
    A

  16. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems Click here.


      NEXT

  17. CONDUCT PARTS INSPECTION


    NEXT

  18. IDENTIFY PROBLEM


    NEXT

  19. ADJUST AND/OR REPAIR


    NEXT

  20. CONDUCT CONFIRMATION TEST


    NEXT
    END