Section 103 (Powertrain Diagnostic Procedures): Introduction: Notes

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT (NGC)

The AN 3.7L/4.7L are equipped with a Powertrain Control Module and Transmission Control Module that have been combined into a single control module. This module is the Next Generation Controller (NGC) for DaimlerChrysler and will be referred to as the Powertrain Control Module (PCM). The PCM has four color coded connectors C1/A through C4/D, (C1/A - BLK, C2/B - ORANGE, C3/C - WHITE, C4/D - GREEN), with each connector containing 38 pins. Two tools are required to diagnose and repair the PCM terminals and harness connectors:

Miller #3638 Terminal Removal Pick must be used to release the connector terminals or harness and connector damage will occur.
Miller #8815 Pinout Box must be used to probe the PCM terminals or terminal damage will occur.

The procedures contained in this article include specifications, instructions, and graphics needed to diagnose the PCM Powertrain System. The diagnostics in this article are based on the failure condition or symptom being present at the time of diagnosis.

Please follow the recommendations below when choosing your diagnostic path.

First make sure the DRBIII® is communicating with the appropriate modules; i.e., if the DRBIII® displays a "No Response" condition, you must diagnose this first before proceeding.
Read DTCs (diagnostic trouble codes) with the DRBIII®.
If no DTCs are present, identify the customer complaint.
Once the DTC or customer complaint is identified, locate the matching test in DIAGNOSTIC INFORMATION AND PROCEDURES and begin to diagnose the symptom.

All component location views are in COMPONENT LOCATIONS . All connector pinouts are in CONNECTOR PINOUTS . All system schematic diagrams are in SCHEMATIC DIAGRAMS . All charts and graphs are in CHARTS AND GRAPHS .

An * placed before the symptom description indicated a customer complaint.

When repairs are required, refer to the appropriate service information for the proper removal and repair procedure.

Diagnostic procedures change every year. New diagnostic systems may be added; current systems may be enhanced. READ THIS ARTICLE BEFORE TRYING TO DIAGNOSE A VEHICLE DTC. It is recommended that you review the entire article to become familiar with all new and changed diagnostic procedures.