Engine Controls - Basic Diagnostic Procedures: Summary

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