Engine Controls - Basic Testing - 2.5L: Summary

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