Engine Controls - Basic Testing - Non-Turbo: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to appropriate articles; For Motronic 4.3L see TESTS W/CODES - 4.3L , For Motronic 4.4L see TESTS W/CODES - 4.4L . If no hard codes are found, proceed to appropriate TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.