Engine Controls - System & Component Testing - Coupe - 3.0L: Introduction

Before testing separate components or systems, perform procedures in BASIC DIAGNOSTIC PROCEDURES - CARS article. Since many computer-controlled and monitored components set a Diagnostic Trouble Code (DTC) if they malfunction, see SELF-DIAGNOSTIC SYSTEM in appropriate SELF-DIAGNOSTICS article. If no DTCs are set, vehicle may be diagnosed by symptom. For diagnosing by symptom, go to appropriate TROUBLE SHOOTING - NO CODES article.