Engine Controls - Basic Testing - 2.5L: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to appropriate TESTS W/CODES - 2.5L article. If no hard codes are found in self-diagnostics, proceed to TESTS W/O CODES - 2.5L article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.