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MODEL SELECTION INDEX
MY 2006 WL Series - Service Information
Section 5B8 ABS - GEN IV V8
1 General Information
1.1 Definition of Wheel Slip
Longitudinal Wheel Slip
Lateral Wheel Slip
Limitation of the Conventional Braking System
1.2 Definition of ABS Active Braking
Antilock Braking System
Electronic Brake-force Distribution System
2 Component Description and Operation
2.1 Component Location
Vehicles with Independent Rear Suspension (IRS)
2.2 Electronic Control Unit
Electronic Control Unit Inputs
Electronic Control Unit Outputs
Electronic Control Unit Self-test Initialisation Sequence
2.3 Hydraulic Modulator Assembly
Hydraulic Circuit Components
2.4 Wheel Speed Sensors
Wheel Speed Sensor Principles of Operation
Front Wheel Speed Sensor
Rear Wheel Speed Sensor – Vehicles with IRS
Testing Wheel Speed Sensor Using an Oscilloscope
2.5 Stop Lamp Switch-A
3 System Operation
3.1 Non-ABS Braking
Non-ABS Braking Operation
Condition Description
Normal Braking Hydraulic Circuit
3.2 Antilock Braking System
ABS Phase – Maintaining Pressure
Condition Description
Control Action
ABS Phase Hydraulic Circuit – Maintaining Pressure
ABS Phase – Reducing Pressure
Condition Description
Control Action
ABS Phase Hydraulic Circuit – Reducing Pressure
ABS Phase – Increasing Pressure
Condition Description
Control Action
ABS Phase Hydraulic Circuit – Increasing Pressure
3.3 Electronic Brake-force Distribution System
EBD System Keep Alive Function
EBD Phase – Maintaining Pressure
Condition Description
Control Action
EBD Phase Hydraulic Circuit – Maintaining Pressure
EBD Phase – Reducing Pressure
Condition Description
Control Action
EBD Phase Hydraulic Circuit – Reducing Pressure
EBD Phase – Increasing Pressure
Condition Description
Control Action
4 Wiring Diagram and Connector Chart
4.1 Wiring Diagram
4.2 Connector Chart
4.3 Connector Information
Electronic Control Unit – A38
Front and Rear Wheel Speed Sensor – B52L, B52R, B76L and B76
5 Diagnostics
5.1 Diagnostic General Descriptions
Diagnostic Trouble Code Tables
Diagnostic Trouble Codes
Status of DTCs
Action Taken When a DTC Sets
Conditions for Clearing DTCs
6 ABS Diagnostic Starting Point
6.1 Basic Requirements
Basic Knowledge Required
Basic Diagnostic Tools Required
6.2 Diagnostic Precautions
6.3 Preliminary Checks
6.4 Diagnostic System Check
Description
Test Description
7 Intermittent Faults
7.1 Intermittent Fault Diagnostic Table
Description
8 Diagnostic Trouble Codes
8.1 DTC List
8.2 DTC C0035, C0040, C0045 or C0050 - Wheel Speed Sensor Circuit Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0035, C0040, C0045 or C0050 Diagnostic Table
8.3 DTC C0060, C0065, C0070, C0075, C0090 or C0095 - Hydraulic Modulator Solenoid Valve Circuit Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0060, C0065, C0070, C0075, C0090 or C0095 Diagnostic Ta
8.4 DTC C0110 – Hydraulic Modulator Pump Motor Circuit Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0110 Diagnostic Table
8.5 DTC C0121 – Electronic Control Unit Internal Valve Relay Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0121 Diagnostic Table
8.6 DTC C0161 – Brake Switch Circuit Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0161 Diagnostic Table
8.7 DTC C0245 and C0252 – Wheel Speed Sensor Signal Output Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
DTC C0245
DTC C0252
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0245 and C0252 Diagnostic Table
8.8 DTC C0550 – Electronic Control Unit Internal Fault
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0550 Diagnostic Table
8.9 DTC C0569 – Electronic Control Unit Configuration Mismatch
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0569 Diagnostic Table
8.10 DTC C0800 – Battery Voltage Out of Range
DTC Description
Circuit Description
Additional Information
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0800 Diagnostic Table
9 Service Operations
9.1 Safety and Precautionary Measures
9.2 ABS Brake Bleeding Procedure
9.3 Electronic Control Unit / Hydraulic Modulator Assembly
Remove
Disassemble
Inspect
Reassemble
Reinstall
9.4 Front Wheel Speed Sensor
9.5 Front Wheel Speed Sensor Lead
Remove
Reinstall
9.6 Rear Wheel Speed Sensor – Vehicles With IRS
Remove
Reinstall
9.7 Front Wheel Speed Sensor Pulse Ring
9.8 Rear Wheel Speed Sensor Pulse Ring – Vehicles With IRS
10 Specifications
11 Torque Wrench Specifications
12 Special Tools
