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How To Proceed With Troubleshooting

  1. Vehicle Brought to Workshop 
    1. GO TO NEXT STEP 
  2. Customer Problem Analysis (See page  CUSTOMER PROBLEM ANALYSIS CHECK  ) 
    1. GO TO NEXT STEP 
  3. Check Multiplex Communication System (See page  MULTIPLEX COMMUNICATION SYSTEM  ) 
    1. Check the DTC output.
    1. DTC outputs (Proceed to MULTIPLEX COMMUNICATION SYSTEM) 
    2. DTC does not output (Go to step 4) 
  4. Problem Symptom Confirmation (See page  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    1. Symptom does not occur (Go to step 5) 
    2. Symptom occurs (Go to step   6 ) 
  5. Symptom Simulation (See page  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    1. GO TO NEXT STEP 
  6. DTC Check (See page  PRE-CHECK  ) 
    1. Normal code (Go to step   8 ) 
    2. Malfunction code (Go to step 7) 
  7. DTC Chart (See page  DIAGNOSTIC TROUBLE CODE CHART  ) 
    1. Go to step   9 
  8. Problem Symptoms Table (See page  PROBLEM SYMPTOMS TABLE  ) 
    1. Go to step 9 
  9. Terminals of ECU (See page  TERMINALS OF ECU  ) 
    1. Go to step 9 
  10. Identification Problem 
    1. Go to step 9 
  11. Repair or Replace 
    1. Go to step   9 
  12. Confirmation Test 
    1. Go to step   9 
    2. End 
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