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HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS > HOW TO PROCEED WITH TROUBLESHOOTING



  1. OPERATION FLOW

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. INSPECT BATTERY VOLTAGE

  4. SYMPTOM CONFIRMATION AND DTC (AND FREEZE FRAME DATA) CHECK

  5. DTC CHART

  6. PROBLEM SYMPTOMS CHART

  7. CIRCUIT INSPECTION OR PARTS INSPECTION

  8. ADJUST, REPAIR OR REPLACE

  9. CONFIRMATION TEST

  1. CUSTOMER PROBLEM ANALYSIS

  1. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE

  1. DTC CHECK

  2. MAKE A NOTE OF DTC DISPLAYED AND THEN CLEAR MEMORY

  3. SYMPTOM CONFIRMATION

  4. SIMULATION TEST USING SYMPTOM SIMULATION METHODS

  5. DTC CHECK

  6. SYMPTOM CONFIRMATION

  1. SYMPTOM SIMULATION

  1. DIAGNOSTIC TROUBLE CODE CHART

  1. PROBLEM SYMPTOMS TABLE

  1. INSPECTION