Body ManagementBody ManagementSystemsSystems

Presentation 14/11/08Presentation 14/11/08

Introduction

Basic Knowledge

New/Changing Technology

Diagnostic Equipment

Topics Covered

ABS- Anti-lock Braking System

TCS- Traction Control System

ESP- Electronic Stability Program

DCS- Descent Control System

Anti-lock Braking System

Better Braking in all Conditions Prevents Wheel Lock-up All Road Surfaces Maintains Vehicle Steer ability Steer Around Hazards

How Does it Work? EBCM- Electronic Braking

Control Module Constantly Monitor the

Following Input Signals

Input Signals

Wheel Speed Sensors Yaw Rate Sensor Steering Angle Sensor Stop Lamp Switch Ignition On Input Battery Voltage Serial Data Communication (can-bus)

Based on these Input Signals the EBCM sends out Output Signals

Instrument Cluster

Hydraulic Modulator Solenoid Valves

Hydraulic Modulator Pump Motor

Serial Data Communication

Result To Electronically create On/Off or Hold Position of each Individual

Wheel When Required TO

PREVENT WHEEL LOCK-UP

Result

Effective Braking System for Emergency Situations

WHAT A BREAKTHROUGH!!!

Standard Equipment- Most Makes

Traction Control

Maintains Driver Steer ability

Assist/Maintain Driver Control

Prevents Loss of Traction

What Does it do? Utilizes the Active

Braking Controls ABS

Engine Torque Reduction of the ECM

Prevent Wheel Spin During Acceleration

Traction Control On

When Traction Control is Activated Drive Wheel Slip is Noted Whilst the Brakes are not Applied the EBCM will Enter

TRACTION CONTROL MODE

Traction Control Mode EBCM

Communicates with the ECM

Instantly Stop Vehicle Wheel Spin

How Does it Work?

Electronically Closing Off Throttle – ECM

Electronically Cutting Off Engine Cylinders - ECM

Electronically Applying the Brake to the Spinning Wheel - EBCM

Result

Total Driver Control

Standard Equipment – Most Makes

Electronic Stability Program Provides Optimum Vehicle Stability

Provides Optimum Vehicle Steering Control

Mainly High Speed Cornering

Slippery Road Surfaces

What Does it do? Measures Steering

Wheel Angle Measures Vehicle

Yaw Combines both ABS

& Traction Control Sensors

Compares Sensors with Driver Input

How Does it Work? Reduces Engine

Power- ECM

Applies Brakes to one, two or three Wheels

Momentarily- EBCM

Result

Maintain Directional Stability Prevent Under steer Prevent Over steer Prevent Wheel Slippage All Whilst Cornering

NEW TECHNOLOGY - Avoid Crashes

CONFUSED??????

Under Steer Vehicle doesn’t want to Turn Corner Front slides out Applies Brakes to

one or both inside Wheels

Reduces throttle if required

Over Steer Vehicle wants to

keep cornering Rear slides out Applies brakes to

one or both outer Wheels

Reduces throttle if required

Information

ESP- Electronic Stability Program Mercedes, Audi, VW, Holden, Saab Pegeuot, Kia, Lamborghini, Ferrari Hyundai, Citron DSC- Dynamic Stability Control BMW, Jaguar, Ford, Mazda, Volvo

Information

VSC- Vehicle Stability Control Toyota, Lexus, Subaru, Honda, Nissan, Alfa Romeo

PSM- Porsche Stability Control Porsche

Descent Control System

Mainly Off Road Vehicles

Used on Steep Downhill Slopes

Maintains Speed & Control

No Accelerator or Brake Required

What Does it do? Allows Driver to

Drive Down a Steep Descent

Comfort No Acceleration or

Braking

How Does it Work?

EBCM Has Total Control Over the Speed of the Vehicle

Constantly Activating Each Individual Wheel On/Off

Maintain Steady Downhill Speed Normally 5km/hr

Result Total Driver Control Total Driver &

Passenger Comfort Total Safety &

Confidence

NEW TECHNOLOGY

Diagnostic Equipment

Multimeter

Scan Tool

Any body for some Prac?

Summary

Basic Understanding Diagnostic Equipment On Board Data Fast & Changing Technology Changes 30 years Excited for the next 30!!! Thank you