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How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2007 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT INTO A WORKSHOP 
  2. DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION 
    1. Ask the customer about symptoms and confirm malfunctions.

      THE SCREEN DISPLAYS NOTHING GO TO STEP   8, AND PROCEED TO " BLACK SCREEN "

      OTHER SYMPTOMS  GO TO STEP   3  )

  3. CONFIRM THE SYSTEM NORMAL CONDITION 

    APPLICABLE (THIS IS NOT A MALFUNCTION) 

    NOT APPLICABLE  (GO TO STEP   4  )

  4. CHECK DTC 

    HINT:

    If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.

    A CODE IS OUTPUT GO TO STEP   5  )

    A CODE IS NOT OUTPUT  GO TO STEP   8  )

  5. DTC CLEAR 
    1. Clear the DTCs and finish the diagnostic mode.

    HINT:

    The currently output DTCs may not indicate actual malfunctions depending on the vehicle conditions.

  6. RECHECK DTC 

    HINT:

    • If the system cannot enter the diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits.
    • Even if the malfunction symptom is not confirmed, check for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
    • Refer to the detailed description on the diagnostic screen as necessary (See DIAGNOSIS DISPLAY DETAILED DESCRIPTION ).
    • Check the diagnostic trouble code and inspect the area the code indicates.

    A CODE IS OUTPUT GO TO STEP   7  )

    A CODE IS NOT OUTPUT GO TO STEP   8  )

  7. DIAGNOSTIC TROUBLE CODE CHART 
    1. Find the output code in the diagnostic trouble code chart (See DIAGNOSTIC TROUBLE CODE CHART ).

      NEXT:  GO TO STEP   10 

  8. PROBLEM SYMPTOMS TABLE 
    1. Find the applicable symptom code in PROBLEM SYMPTOMS TABLE .

    HINT:

    If the symptom does not recur and no code is output, perform the symptom reproduction method (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    THERE IS AN APPLICABLE SYMPTOM CODE IN THE TABLEGO TO STEP   10  )

    THERE IS NO APPLICABLE SYMPTOM CODE IN THE TABLE GO TO STEP  9  )

  9. CHECK THE SYMPTOM ECU TERMINAL ARRANGEMENT BASED ON THE MALFUNCTION 
  10. CHECK THE CIRCUIT 
    1. Adjust, repair, or replace as necessary.
  11. RECHECK THE DIAGNOSTIC TROUBLE CODE 

    HINT:

    After deleting the DTCs, recheck for diagnostic trouble codes.

  12. PERFORM CONFIRMATION TEST 

    NEXT: END 

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