Engine Controls - Basic Diagnostic Procedures: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article. If no fault codes are found in self-diagnostics, proceed to TROUBLE SHOOTING - NO CODES - EEC-V - GASOLINE & NGV article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).