Engine Controls - Basic Testing - 3.5L: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to the TESTS W/CODES - 3.5L article. If no diagnostic trouble codes are found in self-diagnostics, proceed to the TESTS W/O CODES - 3.5L article for diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.) or intermittent diagnostic procedures.