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How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT TO WORKSHOP 
  2. CUSTOMER PROBLEM ANALYSIS (  CUSTOMER PROBLEM ANALYSIS CHECK  ) 
  3. PROBLEM SYMPTOM CONFIRMATION 
    1. SYMPTOM DOES NOT OCCUR (GO TO STOP 4) 
    2. SYMPTOM OCCURS (GO TO STEP   5 ) 
  4. SYMPTOM SIMULATION (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
  5. DTC CHECK (  PRE-CHECK  ) 
    1. NORMAL CODE (GO TO STEP   7 ) 
    2. MALFUNCTION CODE (GO TO STEP 6) 
  6. DTC CHART (  DIAGNOSTIC TROUBLE CODE CHART  ) 

    GO TO STEP   8 

  7. PROBLEM SYMPTOMS TABLE (  PROBLEM SYMPTOMS TABLE  ) 
  8. CIRCUIT INSPECTION AND PART INSPECTION 
  9. IDENTIFICATION OF PROBLEM 
  10. REPAIR OR REPLACE 
  11. CONFIRMATION TEST 

    END