Home/Audi/S6/Audi S6 C5 (1999-2004)/Repair manual/On Board Diagnostic (OBD) - 2001 and Up/Data exchange between control modules, checking

Contents

Wiring diagrams Section: On Board Diagnostic (OBD) - 2001 and Up

Technical features of the instrument cluster

Instrument cluster with standard service reminder indicator

Malfunction message "dEF" on trip odometer display

Notes for replacing instrument cluster

Requirements

Procedure

Check DTC Memory (function 02)

If malfunctions were recognized

If no malfunction was recognized

Diagnostic Trouble Code (DTC) table

Output Diagnostic Test Mode (DTM) (function 03)

During the "output Diagnostic Test Mode" function, the following actuators of the instrument cluster will be activated or coded (if installed)

Test requirement

Test sequence

Erase DTC Memory (function 05)

End Output (function 06)

Code Control Module (function 07)

Coding version for additional equipment

Example

Read Measuring Value Block (function 08)

Adaptation (function 10)

Adaptation Table

Initiating "Adaptation" function 10

A - Changing adaptation value using sliding bar

B - Change adaptation value via direct input

Adaptation channel 02-Resetting SRI after service

Adaptation channel 03-Adaptation of fuel consumption display

Adaptation channel 04-Language versions of driver information system

Adaptation channel 09 - Odometer display

Adaptation channel 18-Adaptation of auxiliary heater

Adaptation channel 30-Adaptation of fuel gauge sender resistance range

Adaptation channel 35-Adaptation of the engine speed threshold

Adaptation channel 40-Distance driven since service

Adaptation channel 41 - time since service

Adaptation channel 42 - minimum mileage performance

Adaptation channel 43 - maximum mileage performance

Adaptation channel 44 - maximum time interval

Adaptation channel 45 - Adaptation to oil quality

Adaptation channel 60-Adaptation for powertrain data-BUS

Adaptation channel 61-Adaptation for comfort system CAN-bus

Adaptation channel 62-Adaptation for information data-BUS

M.Y. 2001

From M.Y. 2002

Input values for replacing instrument cluster

Perform the following steps after replacing instrument cluster

Re-setting service interval display after service without VAS 5051

Data exchange between control modules, checking

Checking bus system

Checking a "two-line bus system"

Example 1

Example 2

Example 3

If you cannot determine a cause for the malfunction, e.g. "powertrain data-BUS malfunctioning", check whether one of the control modules may be responsible for the DTC.

General information

Function

Notes for use and adaptation of vehicle key

If special testing equipment is required during road test, note the following

To reduce the risk of personal injury and/or damage of electric and electronic components, always observe the following

Test requirements

Adaptation of vehicle keys

Requirement

Lost key procedure

Determining the secret number (7-digit PIN)

Adaptation after replacing instrument cluster

Adaptation after replacing Engine Control Module (ECM)

Adaptation after replacing instrument cluster and the Engine Control Module (ECM)

Login Procedure (function 11)

Login Procedure, instrument cluster

Login Procedure, Engine Control Module (ECM)

Safety precautions

Initiating "Read Measuring Value Block"

For 4-digit indication in display field 2 and 4

For 8-digit indication in display field 2 and 4

Checking wire connections

Wire and component test using VAG1598/31 test box

The following actuators will be activated in sequence in the "On Board Diagnostic (OBD)" function

Basic Setting (function 04)

All sections

Data exchange between control modules, checking Audi S6 C5

On Board Diagnostic (OBD) - 2001 and Up

Data exchange between control modules, checking

Note. Data exchange between individual control modules occurs via a bus system. The term "CAN-bus" refers to a system that transports and distributes data. The wire connections between the control modules, via which data is transferred, are referred to as data wires. Data is transferred to the connected control modules serially (one after the other) via these data wires.