Engine Controls - Basic Testing - 2.0L & 2.4L: Summary

If no faults were found while performing basic diagnostic procedures, see TESTS W/CODES - 2.0L VINS [C,Y] & 2.4L VIN [X] article. If no hard codes are found in self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.) or intermittent diagnostic procedures.