Engine Controls - Tests W/Codes - 3.3L CNG: Summary

If no hard DTCs (or only pass codes) are present, driveability symptoms exist or intermittent codes exist, proceed to TEST NTC-1A in for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or INTERMITTENTS in CHRYSLER CORP. TROUBLE SHOOTING - NO CODES - 3.3L CNG article.