Symptom Troubleshooting (L3 With TC): Foreword

When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to the following flowchart:
- If a DTC exists, diagnose the applicable DTC inspection.
  (See DTC TABLE .)
- If no DTC exists and the MIL does not illuminate or flash, diagnose the applicable symptom troubleshooting.
  (See QUICK DIAGNOSTIC CHART ).
  
  Fig 1: Customer Arrives Chart
  Courtesy of MAZDA MOTORS CORP.