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
•
problem isolation
•
repair of isolated problem
•
verification of proper operation
2.0
IDENTIFICATION OF SYSTEM
The vehicle systems that are part of the
9
body
9
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
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Summary of Contents for 300M 1999
Page 30: ...NOTES G E N E R A L I N F O R M A T I O N 20 ...
Page 32: ...4 3 Fuse Block Junction Block 4 4 Airbag System G E N E R A L I N F O R M A T I O N 22 ...
Page 33: ...4 5 Audio System G E N E R A L I N F O R M A T I O N 23 ...
Page 34: ...4 5 Audio System continued G E N E R A L I N F O R M A T I O N 24 ...
Page 35: ...4 6 Body Control Module and Junction Block G E N E R A L I N F O R M A T I O N 25 ...
Page 37: ...4 7 2 Manual Temp Control G E N E R A L I N F O R M A T I O N 27 ...
Page 38: ...4 7 2 Manual Temp Control continued 4 7 3 ATC and MTC G E N E R A L I N F O R M A T I O N 28 ...
Page 39: ...4 8 Chime 4 9 Door Ajar G E N E R A L I N F O R M A T I O N 29 ...
Page 41: ...G E N E R A L I N F O R M A T I O N 31 ...
Page 42: ...4 11 Instrument Cluster FUEL TANK SENDING UNIT G E N E R A L I N F O R M A T I O N 32 ...
Page 43: ...4 12 Memory System G E N E R A L I N F O R M A T I O N 33 ...
Page 44: ...4 12 Memory System continued G E N E R A L I N F O R M A T I O N 34 ...
Page 45: ...4 13 OTIS G E N E R A L I N F O R M A T I O N 35 ...
Page 46: ...4 13 OTIS continued 4 14 Power Door Locks RKE G E N E R A L I N F O R M A T I O N 36 ...
Page 47: ...G E N E R A L I N F O R M A T I O N 37 ...
Page 49: ...ABS PCM TCM G E N E R A L I N F O R M A T I O N 39 ...
Page 50: ...4 17 Vehicle Theft Security System G E N E R A L I N F O R M A T I O N 40 ...
Page 51: ...4 18 Wiper System G E N E R A L I N F O R M A T I O N 41 ...
Page 52: ...4 18 Wiper System continued G E N E R A L I N F O R M A T I O N 42 ...
Page 55: ...6 0 FIELD EXPERIENCE NOTES G E N E R A L I N F O R M A T I O N 45 ...
Page 56: ...NOTES G E N E R A L I N F O R M A T I O N 46 ...
Page 57: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 7 1 GENERAL TROUBLESHOOTING 47 ...
Page 66: ...TEST 3A CONTINUED REPAIRING DRIVER SQUIB CIRCUIT OPEN FIG 1 FIG 2 A I R B A G S Y S T E M 56 ...
Page 110: ...TEST 1C CONTINUED REPAIRING SHORTED FRONT CHANNEL FIG 1 FIG 2 A U D I O S Y S T E M S 100 ...
Page 114: ...TEST 1D CONTINUED REPAIRING SHORTED REAR CHANNEL FIG 1 A U D I O S Y S T E M S 104 ...
Page 118: ...TEST 1E CONTINUED REPAIRING SHORTED LEFT CHANNEL FIG 1 FIG 2 A U D I O S Y S T E M S 108 ...
Page 122: ...TEST 1F CONTINUED REPAIRING SHORTED RIGHT CHANNEL FIG 1 FIG 2 A U D I O S Y S T E M S 112 ...
Page 344: ...TEST 12A CONTINUED REPAIRING FUEL GAUGE LED OPERATION I N S T R U M E N T C L U S T E R 334 ...
Page 376: ...TEST 19A CONTINUED REPAIRING DOOR AJAR INDICATOR NOTES I N S T R U M E N T C L U S T E R 366 ...
Page 380: ...TEST 20A CONTINUED REPAIRING TRUNK AJAR INDICATOR FIG 1 I N S T R U M E N T C L U S T E R 370 ...
Page 748: ...TEST VER 4A VERIFICATION TEST MEMORY SYSTEM NOTES V E R I F I C A T I O N T E S T 738 ...
Page 751: ...10 0 SCHEMATIC DIAGRAMS 10 1 Airbag System G E N E R A L I N F O R M A T I O N 741 ...
Page 752: ...10 2 Body Control Module G E N E R A L I N F O R M A T I O N 742 ...
Page 753: ...10 3 Audio Systems Midline Premium G E N E R A L I N F O R M A T I O N 743 ...
Page 755: ...10 5 Climate Control Automatic Temperature Control G E N E R A L I N F O R M A T I O N 745 ...
Page 757: ...10 7 Exterior Lighting G E N E R A L I N F O R M A T I O N 747 ...
Page 758: ...10 8 Instrument Cluster 10 9 Interior Lighting G E N E R A L I N F O R M A T I O N 748 ...
Page 759: ...10 9 Interior Lighting G E N E R A L I N F O R M A T I O N 749 ...
Page 760: ...10 10 Memory System G E N E R A L I N F O R M A T I O N 750 ...
Page 761: ...10 11 OTIS G E N E R A L I N F O R M A T I O N 751 ...
Page 762: ...10 12 Power Door Locks RKE G E N E R A L I N F O R M A T I O N 752 ...
Page 764: ...10 15 Wiper System G E N E R A L I N F O R M A T I O N 754 ...
Page 766: ...756 ...