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MODEL SELECTION INDEX
MY 2005 VZ Series - Service Information
Section 5B7 ABS-TCS – GEN III V8 AWD
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 AWD ABS-TCS Active Braking
Antilock Braking System
Electronic Brake-force Distribution System
Traction Control System
Automatic Brake-force Distribution System
2 Component Description and Operation
2.1 Component Location
Vehicles with Independent Rear Suspension (IRS)
Vehicles with Solid Rear Axle
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 Sensors (Vehicles with IRS)
Rear Wheel Speed Sensor (Vehicles with Solid Rear Axle)
Testing Wheel Speed Sensor Using an Oscilloscope
2.5 Stop Lamp Switch-A
2.6 Longitudinal Acceleration Sensor
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
3.4 Automatic Brake Distribution System (Traction Control)
ABD System – Brake Intervention
ABD Mode Hydraulic Circuit – Brake Intervention
4 Wiring Diagram and Connector Chart
4.1 Wiring Diagram
4.2 Connector Chart
4.3 Connector Information
Electronic Control Unit – A37
Front and Rear Wheel Speed Sensor – B52L, B52R, B76L and B76
Longitudinal Acceleration Sensor – B1
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-TCS 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, C0036, C0040, C0041, C0045, C0046, C0050 or C
DTC Description
Circuit Description
Additional Information
Conditions for Running DTC
DTC C0035, C0040, C0045 and C0050
DTC C0036, C0041, C0046 and C0051
Conditions for Setting DTC
DTC C0035, C0040, C0045 or C0050
DTC C0036, C0041, C0046 and C0051
Action Taken when the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0035, C0036, C0040, C0041, C0045, C0046, C0050 or C0051 Diagnostic Table
8.3 DTC C0110 – Hydraulic Modulator Pump Motor Circuit
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
8.4 DTC C0121 – ECU Internal Valve Relay
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
8.5 DTC C0161 – Brake Switch Circuit
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
8.6 DTC C0191 or C0192 – Longitudinal Acceleration Sensor Signal Circuit
DTC Description
Circuit Description
Additional information
Conditions for Running the DTC
Conditions for Setting the DTC
DTC C0191
DTC C0192
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Test Description
DTC C0191 or C0192 Diagnostic Table
8.7 DTC C0245 – Wheel Speed Sensor Output
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 C0245 Diagnostic Table
8.8 DTC C0550 – ECU 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 C0896 – 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 C0896 – Diagnostic Table
9 Service Operations
9.1 Safety and Precautionary Measures
9.2 ABS-TCS Brake Bleeding Procedure
9.3 Electronic Control Unit / Hydraulic Modulator Assembly
Remove
Disassemble
Inspect
Reassemble
Reinstall
9.4 Front Wheel Speed Sensor
Remove
Reinstall
9.5 Rear Wheel Speed Sensor, Vehicles with IRS
Remove
Reinstall
9.6 Rear Wheel Speed Sensor, Vehicles with Solid Rear Axle
Remove
Reinstall
9.7 Front Wheel Speed Sensor Pulse Ring
9.8 Rear Wheel Speed Sensor Pulse Ring, Vehicles with IRS
9.9 Rear Wheel Speed Sensor Pulse Ring, Vehicles with Solid
9.10 Longitudinal Acceleration Sensor
Remove
Reinstall
10 Specifications
11 Torque Wrench Specifications
12 Special Tools
