Engine Controls - Tests W/Codes - 7.5L: Summary

If no service code or Code 11-1-11 or 111-1-111 (pass code) is present, but driveability problem still exists, proceed to EEC-IV DIAGNOSIS BY SYMPTOM table. If driveability problem still cannot be located, go to TESTS W/O CODES article in the ENGINE PERFORMANCE Section for diagnosis by symptoms or intermittent diagnostic procedures.