Engine Controls - Tests W/Codes - 2.5L: Introduction

Perform all steps in BASIC TESTING - 2.5L article in this section. If no fault is found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no Diagnostic Trouble Codes (DTCs) are present after entering self-diagnostics, proceed to TESTS W/O CODES - 2.5L article for diagnosis by symptom.