Engine Controls - Tests W/Codes - EEC-IV (Gasoline): Summary

If no service code or if Code 11 or 111 (pass code) is present, but drive-ability problem still exists, proceed to the appropriate SYSTEM/COMPONENT TESTS - GASOLINE article. If the driveability problem still cannot be located, proceed to the appropriate TESTS W/O CODES article for diagnosis by symptoms or intermittent diagnostic procedures.