2003 Jeep Wrangler TJ Chassis Service Manual – PDF DOWNLOAD
DESCRIPTION:
2003 Jeep Wrangler TJ Chassis Service Manual – PDF DOWNLOAD
INTRODUCTION :
The procedures contained in this manual include all the specifications, instructions, and graphics needed to diagnose the 2003 TJ Chassis system problems: Teves Mark 20i Antilock Braking System (ABS) and Axle Lock. The diagnostics in this manual are based on the failure condition or symptom being present at time of diagnosis. Follow the recommendations below when choosing your diagnostic path.
- 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.
- READ THIS MANUAL BEFORE TRYING TO DIAGNOSE A VEHICLE DIAGNOSTIC TROUBLE CODE. It is recommended that you review the entire manual to become familiar with all new and changed diagnostic procedures. 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.
TABLE OF CONTENTS:
2003 Jeep Wrangler TJ Chassis Service Manual – PDF DOWNLOAD
1 0 INTRODUCTION 1
1 1 SYSTEM COVERAGE 1
1 2 SIX-STEP TROUBLESHOOTING PROCEDURE 1
2 0 IDENTIFICATION OF SYSTEM 1
3 0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION 1
3 1 TEVES MARK 20I SYSTEM DESCRIPTION 1
3 1 1 PEDAL FEEL/VEHICLE CHARACTERISTICS 2
3 1 2 SYSTEM COMPONENTS 2
3 1 3 ABS AND BRAKE WARNING INDICATORS 2
3 1 4 CONTROLLER ANTILOCK BRAKE (CAB) 2
3 1 5 HYDRAULIC CONTROL UNIT 3
3 1 6 RELAYS/SWITCHES 3
3 1 7 SENSORS 3
3 2 DIAGNOSTIC TROUBLE CODES 4
3 2 1 SYSTEM INITIALIZATION 4
3 2 2 DIAGNOSTIC MODE 4
3 2 3 INTERMITTENT DIAGNOSTIC TROUBLE CODES 4
3 3 AXLE LOCK 4
3 3 1 GENERAL 4
3 3 2 DESCRIPTION 4
3 4 USING THE DRBIIIT 5
3 5 DRBIIIT ERROR MESSAGES 5
3 5 1 DRBIIIT DOES NOT POWER UP (BLANK SCREEN) 5
3 5 2 DISPLAY IS NOT VISIBLE 5
4 0 DISCLAIMERS, SAFETY WARNINGS 5
4 1 DISCLAIMERS 5
4 2 SAFETY 6
4 2 1 TECHNICIAN SAFETY INFORMATION 6
4 2 2 VEHICLE PREPARATION FOR TESTING 6
4 2 3 SERVICING SUB-ASSEMBLIES 6
4 2 4 DRBIIIT SAFETY INFORMATION 6
4 3 WARNING 6
4 3 1 VEHICLE DAMAGE WARNINGS 6
4 3 2 ROAD TESTING A COMPLAINT VEHICLE 7
4 4 DIAGNOSIS 7
5 0 REQUIRED TOOLS AND EQUIPMENT 7
6 0 GLOSSARY OF TERMS 8
7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 9
BRAKES (CAB)
CAB POWER FEED CIRCUIT 10
CONTROLLER FAILURE 13
G-SWITCH NOT PROCESSABLE 15
LEFT FRONT SENSOR CIRCUIT FAILURE 19
LEFT REAR SENSOR CIRCUIT FAILURE 19
i
TABLE OF CONTENTS – Continued
RIGHT FRONT SENSOR CIRCUIT FAILURE 19
RIGHT REAR SENSOR CIRCUIT FAILURE 19
LEFT FRONT SENSOR SIGNAL FAILURE 22
LEFT REAR SENSOR SIGNAL FAILURE 22
RIGHT FRONT SENSOR SIGNAL FAILURE 22
RIGHT REAR SENSOR SIGNAL FAILURE 22
PUMP MOTOR NOT WORKING PROPERLY 25
SYSTEM OVER VOLTAGE 29
SYSTEM UNDER VOLTAGE 31
*ABS WARNING INDICATOR ALWAYS ON 33
*ABS WARNING INDICATOR INOPERATIVE 35
*BRAKE LAMP SWITCH 37
*FRONT AXLE LOCK INDICATOR REMAINS FLASHING 38
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE 40
*REAR AXLE LOCK INDICATOR REMAINS FLASHING 42
*REAR AXLE LOCK INOPERATIVE 45
VERIFICATION TESTS
VERIFICATION TESTS 47
8 0 COMPONENT LOCATIONS 49
8 1 CONTROLLER ANTILOCK BRAKE 49
8 2 DATA LINK CONNECTOR 49
8 3 G-SWITCH 49
8 4 FUSES & RELAYS 50
8 5 WHEEL SPEED SENSORS 50
8 6 WHEEL SPEED SENSOR CONNECTORS 50
8 7 BRAKE SWITCHES 51
8 7 1 PARKING BRAKE 51
8 7 2 BRAKE SWITCH 51
9 0 CONNECTOR PINOUTS 53
AXLE LOCK SWITCH (OFF-ROAD PACKAGE) 53
BRAKE LAMP SWITCH 53
CONTROLLER ANTILOCK BRAKE 53
DATA LINK CONNECTOR 54
FRONT LOCKER INDICATOR SWITCH (OFF-ROAD PACKAGE) 54
FRONT LOCKER PUMP (OFF-ROAD PACKAGE) 54
G-SWITCH (LHD) 55
INSTRUMENT CLUSTER C1 55
INSTRUMENT CLUSTER C2 55
LEFT FRONT WHEEL SPEED SENSOR 56
LEFT REAR WHEEL SPEED SENSOR 56
FRONT LOCKER RELAY (OFF-ROAD PACKAGE) 58
REAR LOCKER RELAY (OFF-ROAD PACKAGE) 58
REAR LOCKER INDICATOR SWITCH (OFF-ROAD PACKAGE) 58
REAR LOCKER PUMP (OFF-ROAD PACKAGE) 58
RIGHT FRONT WHEEL SPEED SENSOR 59
RIGHT REAR WHEEL SPEED SENSOR 59
TABLE OF CONTENTS – Continued
10 0 SCHEMATIC DIAGRAMS 61
10 1 TEVES MARK 20I CONTROLLER ANTILOCK BRAKE – ABS 61
10 2 AXLE LOCK 62
VIDEO PREVIEW OF THE MANUAL:
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PLEASE NOTE:
- This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
- Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.
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