Table of Contents
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1.0
INTRODUCTION
The procedures contained in this manual include all the specifications, instructions, and graphics
needed to diagnose 1999 300M body system problems. The diagnostics in this manual are based
on the failure condition or symptom being present at the time of diagnosis.
When repairs are required, refer to the appropriate service manual for the proper removal and
repair procedure.
Diagnostic procedures change every year. New diagnostic systems may be added; carryover
systems may be enhanced. IT IS RECOMMENDED THAT YOU REVIEW THE ENTIRE MANUAL
TO BECOME FAMILIAR WITH ALL NEW AND CHANGED DIAGNOSTIC PROCEDURES. This
manual is designed to begin all diagnosis at SYMPTOM IDENTIFICATION TEST 1A which is
located at Section 7.1. If there is a trouble code detected, it will direct you to a specific test. If it
is a symptom problem, it will direct you to a SYSTEM TEST 1A for more specific instructions or
directly to a specific test. Side headers are used to direct alphabetically to the specific Systems.
All locators views are located in Section 4.0.
This book reflects many suggested changes from readers of past issues. After using this book, if
you have any comments or recommendations, please fill out the form at the back of the book and
mail it back to us.
1.1
System Coverage
This diagnostic procedures manual covers all 1999 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
•
•
symptom analysis
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 Manual)
Door Ajar
•
•
Exterior Lighting
•
Instrument Cluster
Interior Lighting
•
•
Memory System
Overhead Travel Information System
•
•
Power Door Locks
Remote Keyless Entry
•
•
Sentry Key Immobilizer
•
Vehicle Communications
Vehicle Theft Security System
•
•
Wiper/Washer
•
problem isolation
repair of isolated problem
•
•
verification of proper operation
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Table of Contents
Troubleshooting
