Introduction - Chrysler Concorde 2004 Service Manual

1.0 INTRODUCTION

The procedures contained in this manual include
all the specifications, instructions and graphics
needed to diagnose 2003 LH body system prob-
lems. The diagnostics in this manual 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.
1. First make sure the DRBIII is communicating
with the appropriate module; i.e., if the DRBIII
shows a "no response" or "Bus +/- Signal Open"
condition, you must diagnose that first.
2. Read DTC's (diagnostic trouble codes) with the
DRBIII .
3. If no DTC's are present, identify the customer
complaint.
4. Once the DTC or customer complaint is identi-
fied, locate the matching test in the Table of
Contents and begin to diagnose the symptom.
All component location views are in section 8.0.
All connector pinouts are in section 9.0.
All schematics are in section 10.0.
An * placed before the symptom description indi-
cates a customer complaint.
When repairs are required, refer to the appropri-
ate service manual for the proper removal and
installation procedure.
Diagnostic procedures change every year. New
diagnostic systems may be added: carry over sys-
tems may be enhanced. READ THIS MANUAL
BEFORE TRYING TO DIAGNOSE A VEHICLE
DIAGNOSTIC TROUBLE CODE. It is recom-
mended that you review the entire manual to be-
come familiar with all the new and changed diag-
nostic procedures.
This book reflects many suggested changes from
readers of past issues. After using this book, if you
have any comments or suggestions, please fill out
the form in the back of the book and mail it back to
us.
1.1 SYSTEM COVERAGE
This diagnostic procedures manual covers all
2003 Chrysler Concorde, Dodge Intrepid, Chrysler
LHS and 300M models.
1.2 SIX STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the body system is done in six basic
steps:
• verification of complaint
• verification of any related symptoms
GENERAL INFORMATION
•
symptom analysis
•
problem isolation
• repair of isolated problem
• verification of proper operation
1.3 FUSES AND LIGHT BULBS
When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system over-
load. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
When replacing HALOGEN bulbs, do not touch
the new bulb with your fingers. Oil contamination
will severely shorten bulb life. If the bulb comes in
contact with an oily surface, clean the bulb with
rubbing alcohol.
2.0 IDENTIFICATION OF
SYSTEM
The vehicle systems that are part of the "body"
system are:
• Airbag System
• Audio
• Chimes
•
Climate Control Systems (Automatic and Man-
ual)
• Door Ajar
• Electrically Heated Systems
•
Exterior Lighting
• Instrument Cluster
• Interior Lighting
• Memory System
•
Overhead Console
• Power Door Locks
• Remote Keyless Entry
• Speed Proportional Steering
•
Vehicle Communications
• Vehicle Theft Security System
• Wiper/Washer
3.0 SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
The body system on the 2003 LH consists of a
combination of modules that communicate over the
PCI bus (Programmable Communication Interface
multiplex system). Through the PCI bus, informa-
1