Engine Control System Self Diagnostics - V6: Summary

If no diagnostic trouble codes (DTC) are present and a no start condition exists, proceed to appropriate BASIC DIAGNOSTIC PROCEDURES - V6 & V8 article. If no DTCs are present and a driveability symptoms exist or intermittents exist, proceed to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.) or intermittent procedures.