2003 Jeep Liberty KJ Chassis Service Manual – PDF DOWNLOAD

Description

2003 Jeep Liberty KJ Chassis Service Manual – PDF DOWNLOAD

DESCRIPTION:

2003 Jeep Liberty KJ Chassis Service Manual – PDF DOWNLOAD

INTRODUCTION:

The procedures contained in this manual include all the specifications, instructions, and graphics needed to diagnose the 2003 Jeep Liberty Mark 20e Antilock Braking System (ABS) problems. 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.

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 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.
1.1 SYSTEM COVERAGE
This diagnostic manual covers the Teves Mark
20e Antilock Braking System (ABS) found on the
Jeep Liberty.
1.2 SIX-STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the antilock brake system is done in
six basic steps:
² verification of symptom
² verification of any related symptoms
² symptom analysis
² problem isolation

TABLE OF CONTENTS:

2003 Jeep Liberty KJ 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 20e SYSTEM DESCRIPTION 1
3 1 1 PEDAL FEEL/VEHICLES CHARACTERISTICS 2
3 1 2 SYSTEM COMPONENTS 2
3 1 3 ABS AND RED BRAKE WARNING INDICATOR 2
3 1 4 CONTROLLER ANTILOCK BRAKE (CAB) 2
3 1 5 HYDRAULIC CONTROL UNIT 3
3 1 6 SENSORS 3
3 2 ABS 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 2 4 FREEZE FRAME 4
3 3 USING THE DRBIIIT 4
3 4 DRBIIIT ERROR MESSAGES 4
3 4 1 DRBIIIT DOES NOT POWER UP (BLANK SCREEN) 4
3 4 2 DISPLAY IS NOT VISIBLE 5
4 0 DISCLAIMERS, SAFETY, WARNINGS 5
4 1 DISCLAIMERS 5
4 2 SAFETY 5
4 2 1 TECHNICIAN SAFETY INFORMATION 5
4 2 2 VEHICLE PREPARATION FOR TESTING 5
4 2 3 SERVICING SUB-ASSEMBLIES 5
4 2 4 DRBIIIT SAFETY INFORMATION 5
4 3 WARNING 6
4 3 1 VEHICLE DAMAGE WARNINGS 6
4 3 2 ROAD TESTING A COMPLAINT VEHICLE 6
4 4 DIAGNOSIS 6
5 0 REQUIRED TOOLS AND EQUIPMENT 7
6 0 GLOSSARY OF TERMS 7
7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 9
BRAKES (CAB)
BUS SYSTEM COMMUNICATION FAILURE 10
CAB INTERNAL FAILURE 12
CLUSTER LAMP FAILURE 14
G-SENSOR FAILURE 16
LEFT FRONT SENSOR CIRCUIT FAILURE 17
REAR SENSOR CIRCUIT FAILURE 17
RIGHT FRONT SENSOR CIRCUIT FAILURE 17
LEFT FRONT WHEEL SPEED SIGNAL FAILURE 22
i
TABLE OF CONTENTS – Continued
REAR WHEEL SPEED SIGNAL FAILURE 22
RIGHT FRONT WHEEL SPEED SIGNAL FAILURE 22
PUMP CIRCUIT FAILURE 25
SYSTEM OVER VOLTAGE 29
SYSTEM UNDER VOLTAGE 32
VALVE POWER FEED FAILURE 34
*BRAKE LAMP SWITCH FAILURE 37
COMMUNICATION
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE 38
VERIFICATION TESTS
VERIFICATION TESTS 40
8 0 COMPONENT LOCATIONS 41
8 1 CONTROLLER ANTILOCK BRAKE, HYDRAULIC CONTROL UNIT, PUMP
MOTOR 41
8 2 WHEEL SPEED SENSORS 41
8 3 WHEEL SPEED SENSOR CONNECTORS 42
8 4 BRAKE LAMP SWITCH 42
8 5 BRAKE LAMP SWITCH CONNECTOR 42
9 0 CONNECTOR PINOUTS 43
BRAKE LAMP SWITCH 43
CONTROLLER ANTILOCK BRAKE 43
DATA LINK CONNECTOR 44
LEFT FRONT WHEEL SPEED SENSOR (ABS) 44
PUMP MOTOR CONNECTOR 44
REAR WHEEL SPEED SENSOR 45
RIGHT FRONT WHEEL SPEED SENSOR (ABS) 45
10 0 SCHEMATIC DIAGRAMS 47

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