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How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT TO WORK SHOP 
  2. CUSTOMER PROBLEM ANALYSIS (See  CUSTOMER PROBLEM ANALYSIS CHECK  ) 
  3. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM See  HOW TO PROCEED WITH TROUBLESHOOTING 
    1. Check that the DTC outputs.

    DTC OUTPUTS (PROCEED TO "BODY MULTI-PLEX COMMUNICATION SYSTEM") 

    DTC DOES NOT OUTPUT (GO TO STEP 4) 

  4. DTC CHECK (See  PRE-CHECK  ) 

    MALFUNCTION CODE (GO TO STEP 5) 

    NORMAL CODE (GO TO STEP   6 ) 

  5. DTC CHART (See  DIAGNOSTIC TROUBLE CODE CHART  ) 

    Go: To Step   8 

  6. PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 
  7. TERMINAL OF ECU (See  TERMINALS OF ECU  ) 
  8. CIRCUIT INSPECTION (See  CIRCUIT DESCRIPTION   - See  LIGHT AUTO TURN OFF SYSTEM LIGHT DOES NOT OPERATE  ) 
  9. IDENTIFICATION OF PROBLEM 
  10. REPAIR OR REPLACE 
  11. CONFIRMATION TEST 

END