Home/Audi/A8/Audi A8 D3 (2002-2005)/Repair manual/On Board Diagnostic (OBD) - Abs/edl/asr/Technical information required

Contents

Wiring diagrams Section: On Board Diagnostic (OBD) - Abs/edl/asr

General

Function

VAG1551 Scan Tool (ST), connecting and entering address word

Selecting functions

Requirements

End Output

Bus

CAN

The DTC table indicates the bus must be checked

Is there is a malfunction?

While checking the bus lines, differentiate between the following two situations

Three or more control modules are communicating across a "two-line bus system"

Example 1

Example 2

Example 3

Reconnecting battery, procedures

Basic setting for the up and down power windows function

Setting the clock

Adaptation of throttle valve control module

Application notes

Road test

If there is a complaint, a pin-pointed troubleshooting must be carried out

Test requirements

Technical publications required

Function of Bosch ABS 5.0 Series

Electronic brake force distribution

Table of warning light functions

Function of On Board Diagnostic (OBD)

Technical data of On Board Diagnostic (OBD)

Check control module version

Check DTC memory

Encode control module

Read measured value block

Test table, Display group 1

Test table, Display group 3

Electrical testing

Function of Bosch ABS 5.3 Series

Two communications systems are in use

Output Diagnostic Test Mode (DTM)

Test table, Display group 2

Note on DTC table

Electronic Stabilization Program (ESP)

Safety measures and troubleshooting basics

Test drive

Test conditions

Technical information required

ESP function

EBD

ESP

Examples

Hydraulic pump for traction control -V156- and the sensor for brake pressure -G201

Steering Angle Sensor -G85

Airbag spiral spring/return spring with slip ring -F138

Sender for rotation rate -G202

Sensor for transverse acceleration -G200

The parking brake switch

The ABS solenoid valve relay -J106- and the ABS return flow pump relay -J105

ABS/ESP Control Module CAN Bus

Indicator light functions, overview

On Board Diagnostic (OBD), specific functions

On Board Diagnostic (OBD), technical data

Control module versions (scan tool function 01), checking

DTC table

Basic setting (scan tool function 04)

Login procedure (scan tool function 11)

Display group 1: Zeroing the steering angle sensor -G85

Display group 2: Activating hydraulic pump for traction control -V156

Display group 3: Activating ESP driving test

Output Diagnostic Test Mode (DTM) (scan tool function 03)

Code Control Module (scan tool function 07)

Measuring Value Block (scan tool function 08), reading

Test table: display group 1 (001)

Electrical test table

Safety precautions

On Board Diagnostic (OBD) functions

DTC table for tire pressure monitoring

Performing coding

Code: 20129

Adaptation

Tire pressure monitoring system, operating for the first time

All sections

Technical information required Audi A8 D3

On Board Diagnostic (OBD) - Abs/edl/asr

Technical information required

Applicable electrical wiring diagrams See appropriate System Wiring Diagrams article.
Installation locations of electrical components: See «ANTILOCK BRAKE SYSTEM»(/audi/a8/d3-2002-2005/remont/anti-locktraction-control/#antilock-brake-system) .
Brake mechanical information: See «DISC»(/audi/a8/d3-2002-2005/remont/mechanical-hydraulic/#disc-brakes) .
Brake hydraulic information: See «DISC»(/audi/a8/d3-2002-2005/remont/mechanical-hydraulic/#disc-brakes) .
Information on repairing common malfunctions on current models (as applicable).