Symptom Troubleshooting [Engine Mechanical]: 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: Diagnostic Flow Chart

Courtesy of MAZDA MOTORS CORP.

*: Malfunction Indicator Lamp (MIL), Generator Warning Light, Security Light