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How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 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 (see  CUSTOMER PROBLEM ANALYSIS CHECK  ) 

    Ask the customer about symptoms and confirm malfunctions. Fill out the Customer Problem Analysis check sheet.

    1. The screen displays nothing (go to step   6 , proceed to "BLACK SCREEN (NO IMAGE APPEARS ON NAVIGATION/AUDIO SCREEN)") 
    2. Other symptoms (go to step 3) 
  3. Confirm the system normal condition (see  SYSTEM NORMAL CONDITION CHECK  ) 
    1. Applicable (This is not a malfunction.) 
    2. Not applicable (go to step 4) 
  4. Check the diagnostic trouble codes (see  SYSTEM CHECK MODE (DTC CHECK)  ) 

    HINT:

    • Even if the malfunction symptom is not confirmed, check the 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 ).
    1. A code is output (go to step 5) 
    2. A code is not output (go to step   6 ) 
  5. Diagnostic trouble code chart (see  DIAGNOSTIC TROUBLE CODE CHART  ) 

    Find the output code on the diagnostic trouble code chart.

    1. Output the diagnostic trouble code. (go to step   8 ) 
  6. Problem symptoms table (see  PROBLEM SYMPTOMS TABLE  ) 

    Find the applicable symptom code in the problem symptoms table.

    HINT:

    If the symptom does not recur and no code is output, perform the symptom reproduction method (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    1. There is an applicable symptom code in the table (go to step   8 ) 
    2. There is no applicable symptom code in the table (go to step 7) 
  7. Check the ECU terminal arrangement based on the malfunction symptom (see  TERMINALS OF ECU  ) 
  8. Check the circuit 

    Adjust, repair or replace as necessary.

  9. Recheck the diagnostic trouble code (see  SYSTEM CHECK MODE (DTC CLEAR/RECHECK)  ) 

    HINT:

    After deleting the DTC, recheck the diagnostic trouble code.

  10. Perform confirmation test 

    END 

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