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Home >> Toyota >> 2009 >> Sequoia Limited, 5.7 W >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Control System (3UR-FE) - SFI System, Precautions, Parts Location, System Diagram, Basic Inspection, Diagnosis System, Freeze Frame Data, Diagnostic Trouble Code Chart) >> SFI System >> How To Proceed With Troubleshooting
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How To Proceed With Troubleshooting

WARNING: This page is about a different variant/trim than selected.

HINT:

*: Use the Techstream.

  1. VEHICLE BROUGHT TO WORKSHOP 

    NEXT 

  2. CUSTOMER PROBLEM ANALYSIS 

    NEXT 

  3. CONNECT TECHSTREAM TO DLC3* 

    HINT:

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

    NEXT 

  4. CHECK DTC AND FREEZE FRAME DATA* 

    HINT:

    Record or print DTCs and freeze frame data, if necessary.

    NEXT 

  5. CLEAR DTC AND FREEZE FRAME DATA* 

    NEXT 

  6. CONDUCT VISUAL INSPECTION 

    NEXT 

  7. SET CHECK MODE DIAGNOSIS* 

    NEXT 

  8. CONFIRM PROBLEM SYMPTOMS 

    HINT:

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

    Result 

    RESULT REFERENCE CHART

    Result Proceed to
    Malfunction does not occur A
    Malfunction occurs B

    B: GO TO STEP  10

    A: Go to Next Step 

  9. SIMULATE SYMPTOMS 

    NEXT 

  10. CHECK DTC* 

    Result 

    RESULT REFERENCE CHART

    Result Proceed to
    Trouble code A
    No code B

    B: GO TO STEP  12

    A: Go to Next Step 

  11. REFER TO DTC CHART 

    NEXT: GO TO STEP  14

  12. CONDUCT BASIC INSPECTION 

    Result 

    RESULT REFERENCE CHART

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

    B: GO TO STEP  17

    A: Go to Next Step 

  13. REFER TO PROBLEM SYMPTOMS TABLE 

    Result 

    RESULT REFERENCE CHART

    Result Proceed to
    Malfunctioning circuit confirmed A
    Malfunctioning parts confirmed B

    B: GO TO STEP  17

    A: Go to Next Step 

  14. CHECK ECM POWER SOURCE CIRCUIT 

    NEXT 

  15. CONDUCT CIRCUIT INSPECTION 

    Result 

    RESULT REFERENCE CHART

    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    B: GO TO STEP  18

    A: Go to Next Step 

  16. CHECK FOR INTERMITTENT PROBLEMS 

    NEXT: GO TO STEP  18

  17. CONDUCT PARTS INSPECTION 

    NEXT 

  18. IDENTIFY PROBLEM 

    NEXT 

  19. ADJUST AND/OR REPAIR 

    NEXT 

  20. CONDUCT CONFIRMATION TEST 

    NEXT: END