Section 17 (Engine Controls - Self-Diagnostics - 3.9L & 5.9L): Introduction

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

To properly diagnose and repair this vehicle, follow DIAGNOSTIC PROCEDURE under SELF-DIAGNOSTIC SYSTEM. If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, proceed to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - DAKOTA article. If no DTCs are present and a driveability condition exists, proceed to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.). Vehicles equipped with the Jeep/Truck Engine Controller (JTEC) Powertrain Control Module (PCM) are equipped with a separate Transmission Control Module (TCM). The JTEC PCM has 3 harness connectors. This article applies only to Dakota models equipped with a JTEC PCM. For self-diagnostic information on Dakota models equipped with the NGC PCM, see SELF-DIAGNOSTICS - DAKOTA - 4.7L article. Throughout this article, the JTEC PCM will be referred to as the PCM.