Service

Audi A6 1998 ➤
Body Self-diagnosis
Edition 08.1997

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Service Department. Technical Information

 Service
List of Workshop Manual Repair GroupsList of Workshop Manual
Repair GroupsList of Workshop Manual Repair Groups
Audi A6 1998 ➤
Body Self-diagnosis

Repair Group
01 - Self-diagnosis

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Technical information should always be available to the foremen and mechanics, because their careful
and constant adherence to the instructions is essential to ensure vehicle road-worthiness and safety. In
addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course,
be observed.

All rights reserved.

No reproduction without prior agreement from publisher.

Copyright © 2010 Audi AG, Ingolstadt A0056006920

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Contents

01 - Self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1 Connecting fault reader V.A.G 1551 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 Connecting fault reader V.A.G 1551 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2 Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag . . . . . . . . . . . .2
2.1 Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag . . . . . . . . . . . .2
2.2 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.3 Initiating self-diagnosis of airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.4 Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.5 Fault table for BTU airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.6 Interrogating airbag control unit version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.7 Final control diagnosis up to CW 18.99. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.8 Final control diagnosis as of week 18.99 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.9 Encoding airbag control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
2.10 Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
2.11 Summary of measured value blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
2.12 Adaption: Disabling and activating passenger's
authorised byairbag
AUDI AG.unit
AUDI .AG. .does
. . .not. .guarantee
. . . . . or. accept
. . . . any
. . liability
. . . . . .28
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless
3 Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag My 2002 > . . . .31
with respect to the correctness of information in this document. Copyright by AUDI AG.

3.1 Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag My 2002 > . . . .31
3.2 Self-diagnosis in Guided Fault-finding via VAS5051 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4 Self-diagnosis of central locking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.1 Self-diagnosis of central locking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.2 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.3 System description of anti-theft alarm with Thatcham ATW function (2nd generation) . . . .32
4.4 Initiating self-diagnosis of the central locking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.5 Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
4.6 Fault table for the central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
4.7 Interrogating control unit version of central locking control unit . . . . . . . . . . . . . . . . . . . . . .41
4.8 Final control diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.9 Encoding central locking control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
4.10 Coding table up to approx. CW 32.98 (two-key remote keys) . . . . . . . . . . . . . . . . . . . . . . . .45
4.11 Coding table up to CW 18.00 (with introduction of three-key remote keys) . . . . . . . . . . . . . .45
4.12 Coding table as of CW 18.00 (three-key remote keys) . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
4.13 Coding table as of CW 18.01 (with introduction of software version D35) . . . . . . . . . . . . . .46
4.14 Coding table as of CW 18.01 for vehicles with British registration (with introduction of software
version D35) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
4.15 Coding table as of CW 18.01 for vehicles with Japanese registration (with introduction of
software version D35) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
4.16 Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
4.17 Measured value block overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
4.18 Matching or deleting vehicle key for radio remote control . . . . . . . . . . . . . . . . . . . . . . . . . .55
4.19 Adaption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
5 Ultrasonic interior monitor self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
5.1 Ultrasonic interior monitor self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
5.2 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
5.3 Initiating self-diagnosis of the interior monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
5.4 Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
5.5 Fault table for interior monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
5.6 Interrogating control unit version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
5.7 Functional test of interior monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
5.8 Final control diagnosis for vehicles without head airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
5.9 Final control diagnosis for vehicles with head airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
5.10 Encoding the control unit (vehicles without head airbag) . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
5.11 Encoding the control unit (vehicles with head airbag) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
5.12 Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Contents i
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

5.13 Measured value block overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

5.14 Adaption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
6 Self-diagnosis of control unit for seat adjustment with memory function . . . . . . . . . . . . . . . .74
6.1 Self-diagnosis of control unit for seat adjustment with memory function . . . . . . . . . . . . . . . .74
6.2 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
6.3 Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
6.4 Fault table for control unit for seat adjustment with memory function . . . . . . . . . . . . . . . . . .76
6.5 Interrogating control unit version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
6.6 Encoding memory for driver's seat control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
6.7 Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
6.8 Summary of measured value blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
6.9 Basic setting of seat position at control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
6.10 Deactivating the remote key memory function using the basic setting function . . . . . . . . . .85
6.11 Erasing fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
6.12 End of output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
7 Self-diagnosis of control unit for passenger's seat adjustment with memory function . . . . . .88
7.1 Self-diagnosis of control unit for passenger's seat adjustment with memory function . . . . . .88
7.2 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
7.3 Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
7.4 Fault table for control unit for seat adjustment with memory function . . . . . . . . . . . . . . . . . .90
7.5 Interrogating control unit version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
7.6 Encoding memory for passenger seat control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
7.7 Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
7.8 Measured value block overview, passenger seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
7.9 Basic setting of seat position at control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

ii Contents
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01 - Self-diagnosis

1 - Connecting fault reader V.A.G 1551

1.1 - Connecting fault reader V.A.G 1551

Note: Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
The vehicle system tester V.A.G 1552 can be used instead of the fault reader V.A.G 1551, however a printout
with respect to the correctness of information in this document. Copyright by AUDI AG.

is not possible.

Test conditions

• Battery voltage at least 11 V

• Earth connections on engine and gearbox OK.
• Fuse OK.

- -> Connect fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3.

-> Indicated on display:

V.A.G - SELF-DIAGNOSIS HELP
1 - Rapid data transfer*
2 - Flash code output*

*Displays appear alternately

-> If the display shows one of the messages, run through the fault finding procedure as described in the diag‐
nosis management fault finding program.
Rapid data transfer HELP
No reply from control unit

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
Rapid data transfer HELP
Communication problem

1.1 - Connecting fault reader V.A.G 1551 1

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Rapid data transfer HELP

K wire not switching to earth

Rapid data transfer HELP

K wire not switched to positive

Note:

If the display remains blank:

=> Fault reader operating instructions

- Switch on printer using the Print button

(Warning lamp in switch illuminates).
- Press key 1 for "Rapid data transfer".

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Note:

Address word 00 is used to carry out the automatic test sequence, i.e. interrogation of the fault memory via
rapid data transfer for all vehicle systems with self-diagnosis capability.

2 - Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag
2.1 - Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag

2.2 - General notes

The airbag system contains: Driver's airbag, passenger's airbag, two front belt tensioners, two side airbags at
the front, two side airbags at the rear and either 2 or 3 rear belt tensioners. In a crash situation, these are
actuated centrally by the airbag control unit (J234) when certain specified triggering criteria are exceeded.

Self-diagnosis can be used to block or activate the passenger airbag => Page 28 .

If an airbag and/or belt tensioner is triggered, the control unit will record the fault "Crash data stored". In such
cases the control unit must be replaced.

Independent from the nature and intensity of the accident, the airbag control unit sends a "Crash Signal" to the
control unit for the central locking system. This function is a passive safety feature. If an airbag is triggered it
releases the door locks and tailgate lock via the central locking system. The interior light is also switched on.
The "Crash-Signal" must be checked using final control diagnosis => Page 18 .

When commissioning a new control unit it must be encoded => Page 20 .

Vehicles as of CW 36.98:

The airbag system contains: Driver's Protected

airbag,bypassenger's airbag, two front seat belt tensioners, two side airbags
copyright. Copying for private or commercial purposes, in part or in whole, is not
at the front, two side airbags at the rear, head
permitted airbag,
unless key
authorised switch
by AUDI deactivating
AG. AUDI passenger's
AG does not guarantee or accept airbag
any liabilityand either 2
or 3 rear belt tensioners. In a crash situation, these
with respect to theare actuated
correctness centrally
of information in thisby the airbag
document. control
Copyright by AUDI unit
AG. (J234) when
certain specified triggering criteria are exceeded.

In addition to using the airbag key switch it is also possible to block or activate the passenger airbag via the
function "adaption" => Page 28 .

2 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

If an airbag and/or belt tensioner is triggered, the control unit will record the fault "Crash data stored".

In such cases the control unit for the airbag (J234) must be renewed after

◆ the 1st triggering of driver's or passenger's airbag,

◆ the 3rd triggering of the front belt tensioners and/or side airbags.

After the 3rd triggering it is not possible to erase the crash signal with the fault reader V.A.G 1551 up to CW
36.98 in vehicles with airbag 8.

Independently of the nature and intensity of the accident, the airbag control unit sends a "Crash Signal" to the
control unit for the central locking system and as of week 18.99 to the control unit for the engine. This function
is a passive safety feature. If an airbag is triggered it releases the door locks and tailgate lock via the central
locking system, disables the internal switch and the interior lighting is switched on. The engine control unit
switches off the fuel supply. The "Crash-Signal" must be checked using final control diagnosis => Page
19 .

When commissioning a new control unit by

Protected it must be
copyright. encoded
Copying =>or Page
for private 20purposes,
commercial . in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability

All models:
with respect to the correctness of information in this document. Copyright by AUDI AG.

The control unit detects faults in the airbag system and stores them in a permanent memory.

After the ignition is switched on, the airbag warning lamp (K75) comes on for about 4 seconds and then goes
out again. If it then flashes for a further 12 seconds, this indicates that the passenger's airbag is disabled via
adaption.

◆ If the warning lamp (K75) does not go out after about 4 seconds, this means that there is a fault in the voltage
supply for the airbag control unit (J234). Interrogate fault memory => Page 5 .

◆ If the warning lamp (K75) goes out and comes on again, this indicates either that the control unit has not
been encoded, that the wrong control unit has been fitted, or that a fault has occurred. Interrogate fault
memory => Page 5 .

Important
Wiring must only be checked by visual inspection.
Never use electrical tests to check or measure continuity in the igniter circuits.
Always switch off ignition before inspecting wiring.

2.3 - Initiating self-diagnosis of airbag system

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

◆ Connect fault reader V.A.G 1551

=>Page 1 .
◆ Switch ignition on.

Notes:

◆ Only short-term faults are shown as "sporadically occurring faults" and marked with "/SP" on the display.
◆ In order to eliminate such sporadically occurring faults the fault memory must be erased before repair.
◆ Additional operating instructions can be called up with the fault reader HELP key.
◆ The ⇒ key is used for the continuation of the program sequence.

- Switch on printer with the Print key (indicator lamp in key lights up).

2.2 - General notes 3

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press key 1 for "Rapid data transfer".

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for airbag system: 15

- Press keys -1- and -5-.

-> Indicated on display:

Rapid data transfer Q
15 - Airbag

- Confirm input with Q key.

-> Indicated on display:

Rapid data transfer HELP
Tester sends address word 15

-
4B0959655D Airbag 7 AUDI D00
Code 00104 WSC 06812

-> Indicated on display after approx. 5 seconds (e.g. for front and side airbags):

Vehicles as of production date CW 36. 98:

-
4B0959655G Airbag front + side 0004
Code 01106 WSC 06812

-> After about 5 seconds, the following appears on the display:

Airbag front + side or airbag front + head

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

Note:

A list of the possible functions is printed out after pressing the HELP key:

Self-diagnosis functions

The following functions are possible:

02 - Interrogating fault memory => Page 5 .

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
03 - Final control diagnosis=> Page 18 . permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

05 - Erasing fault memory => Page 86 .

06 - End output => Page 87 .

07 - Coding control unit => Page 20 .

08 - Reading measured value block => Page 23 .

10 - Adaption=> Page 28 .

4 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

2.4 - Interrogating fault memory

Note:

The displayed fault information is not constantly updated but only when initiating self-diagnosis or with function
05 "Erase fault memory".

- Switch on printer with the Print key (indicator lamp in key lights up).

Performing function 02- "Interrogating fault memory"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -2-.

-> Indicated on display:

Rapid data transfer Q
02 - Interrogate fault memory

- Confirm input with Q key.

-> The number of faults stored appears on the display.

X fault recognised

-> If the message "No fault recognised" is displayed, the program returns to its start position when pressing the
⇒key.
No fault recognised

-> Indicated on display:

Rapid data transfer HELP
Select function XX

If something else is displayed:

=> Fault reader operating instructions

- Erase fault memory (function 05)

=>Page 86 .
- End output (function 06) => Page 87
- Unplug diagnostic connector.

2.5 - Fault table for BTU airbag system

Notes:

◆ The following table lists all the faults that can be detected by the airbag control unit -J234 and printed out
according to fault ident. No. Present faults with 5-digit number fault number are printed out only with the
printer of V.A.G 1551 switched on.
◆ If a fault is continually present the fault lamp for the airbag system lights up until the fault is rectified and the
fault memory is erased.
◆ If a fault occurs only occasionally or if the fault memory is not erased after the fault remedy has been carried
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
out, the fault will appear on the display as a "sporadically
with respect to the occurring
correctness of fault" (SP).
information in thisOn the right
document. of by
Copyright the display
AUDI AG.
of the V.A.G 1551 a "/SP" appears and the fault light remains on.
◆ If defective components were detected also check wiring to the components for short and open circuits
according to the current flow diagram.

2.4 - Interrogating fault memory 5

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00532
Voltage supply too low - Battery discharged/defec‐ - Charge/replace battery.
tive Rectify short circuit in electri‐
- Short-circuit in vehicle cal system
electrical system
00588
Igniter for airbag, driver's side -N95 resistance - Open circuit - Fault finding according to
value too high - Coil spring defective current flow diagram
- Driver airbag unit defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Testing coil spring
Replace airbag unit, driver's
side
Replace control unit for airbag
-J234.
00588
Igniter for airbag, driver's side -N95 resistance - Wiring short - Fault finding according to
value too low - Coil spring defective current flow diagram
- Driver airbag unit defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Testing coil spring
Replace airbag unit, driver's
side
Replace control unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00588
Igniter for airbag, driver's side -N95 short to posi‐ - Wiring damaged. - Fault finding according to
tive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
00588
Igniter for airbag, driver's side -N95 short to earth - Wiring damaged. - Fault finding according to
- Driver airbag unit defec‐ current flow diagram
tive => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234bydefective.
Protected copyright. Copying for private or Fitting
commercial Locations binder
purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI Replace
AG does notairbag
guaranteeunit, driver's
or accept any liability
side
with respect to the correctness of information in this document. Copyright by AUDI AG.
Replace contr. unit for airbag
-J234.
00589
Igniter 1 for airbag, passenger's side -N131 resist‐ - Open circuit - Fault finding according to
ance value too high - Side airbag unit, passeng‐ current flow diagram
er's side defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace airbag unit, passeng‐
er's side
Replace contr. unit for airbag
-J234.

6 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00589
Igniter 1 for airbag, passenger's side -N131 resist‐ - Wiring short - Fault finding according to
ance value too low - Side airbag unit, passeng‐ current flow diagram
er's side defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Loc. binder
Repl. airbag unit, passenger's
side
Replace contr, unit for airbag
-J234.
00589
Igniter 1 for airbag, passenger's side -N131 short - Wiring damaged. - Fault finding according to
to positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Loc. binder
Replace contr. unit for airbag
-J234.
00589
Igniter 1 for airbag, passenger's side -N131 short - Wiring damaged. - Fault finding according to
to earth - Side airbag unit, passeng‐ current flow diagram
er's side defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Loc. binder
Repl. airbag unit, passenger's
side
Replace contr. unit for airbag
-J234.
00594
Airbag ignition circuits; Short to positive - Lines damaged - Fault finding according to
- Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Loc. binder
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00594
Airbag ignition circuits; Short to earth - Wiring damaged. - Fault finding according to
- Coil spring defective current flow diagram
- Airbag, driver's side defec‐ => Current Flow Diagrams,
tive Electrical Fault-finding and
- Control unit for airbag - Fitting Locations binder
J234 defective. Testing coil spring
Replace airbag unit, driver's
side
Replace control unit for airbag
-J234.
00595
Crash data stored permitted unless authorised - by
Head-on collision
AUDI AG. AUDI - or
AG does not guarantee Replace
accept any control
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
liability unit, airbag
- Side
with respect to the correctness impact in this document. Copyright
of information unit,bybeltAUDItensioner
AG. unit and
any damaged components.
00654

2.5 - Fault table for BTU airbag system 7

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Igniter for belt tensioner, driver's side -N152 re‐ - Open circuit - Fault finding according to
sistance value too high - Open connection in wiring current flow diagram
to driver belt tensioner => Current Flow Diagrams,
- Belt tensioner igniter de‐ Electrical Fault-finding and
fective. Fitting Locations binder
- Control unit for airbag - Close connection.
J234 defective. Replace belt tensioner, driv‐
er's side
Replace control unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00654
Igniter for belt tensioner, driver's side -N153 re‐ - Wiring short - Fault finding according to
sistance value too low - Igniter for belt tensioner, current flow diagram
driver's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace belt tensioner, driv‐
er's side
Replace contr. unit for airbag
-J234.
00654
Igniter for belt tensioner, driver's side -N153 short - Wiring damaged. - Fault finding according to
to positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
00654
Igniter for belt tensioner, driver's side -N153 short - Wiring damaged. - Fault finding according to
to earth - Igniter for belt tensioner, current flow diagram
driver's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace belt tensioner, driv‐
er's side
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00655
Igniter for belt tensioner, passenger's side -N154 - Open circuit - Fault finding according to
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
resistance value too high - Openwith
connection in line toof current
respect to the correctness information flow diagramCopyright by AUDI AG.
in this document.
belt tensioner, passenger's => Current Flow Diagrams,
side. Electrical Fault-finding and
- Belt tensioner igniter de‐ Fitting Locations binder
fective. Close connection.
- Control unit for airbag - Replace belt tensioner, pas‐
J234 defective. senger's side.
Replace contr. unit for airbag
-J234.
00655

8 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Igniter for belt tensioner, passenger's side -N154 - Wiring short - Fault finding according to
resistance value too low - Igniter for belt tensioner, current flow diagram
passenger's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace belt tensioner, pas‐
senger's side.
Replace contr. unit for airbag
-J234.
00655
Igniter for belt tensioner, passenger's side -N154 - Wiring damaged. - Fault finding according to
short circuit to positive terminal - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00655
Igniter for belt tensioner, passenger's side -N154 - Wiring damaged. - Fault finding according to
short circuit to earth - Igniter for belt tensioner, current flow diagram
passenger's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace belt tensioner, pas‐
senger's side.
Replace control unit for airbag
-J234.
01044
Control unit incorrectly encoded - Control unit not coded ac‐ - Encode control unit for air‐
cording to vehicle configu‐ bag -J234 accordingly.
ration.
01211
Igniter for belt tensioner behind driver's seat -N196 - Wiring damaged. - Fault finding according to
resistance value too high - Igniter for belt tensioner - current flow diagram
N196 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N196.
Replace control unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01211
Igniter for belt tensioner behind driver's seat -N196 - Wiring damaged. - Fault finding according to
resistance value too low - Igniter for belt tensioner - current flow diagram
N196 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N196.
Replace contr. unit for airbag
-J234.
01211

2.5 - Fault table for BTU airbag system 9

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Igniter for belt tensioner behind driver's seat -N196 - Wiring damaged. - Fault finding according to
short circuit to positive terminal - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01211
Igniter for belt tensioner behind driver's seat -N196 - Wiring damaged. - Fault finding according to
short circuit to earth - Igniter for belt tensioner - current flow diagram
N196 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N196.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01211
Igniter for belt tensioner behind driver's seat -N196 - Wiring damaged. - Fault finding according to
open circuit - Igniter for belt tensioner - current flow diagram
N196 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N196.
Replace contr. unit for airbag
-J234.
01212
Igniter for belt tensioner behind passenger's seat - Wiring damaged. - Fault finding according to
-N197 resistance value too high - Igniter for belt tensioner - current flow diagram
N197 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N197.
Replace
Protected by copyright. Copying for private or commercial purposes, in part orcontr.
in whole,unit
is notfor airbag
-J234.or accept any liability
permitted unless authorised by AUDI AG. AUDI AG does not guarantee

01212
with respect to the correctness of information in this document. Copyright by AUDI AG.

Igniter for belt tensioner behind passenger's seat - Wiring damaged. - Fault finding according to
-N197 resistance value too low - Igniter for belt tensioner - current flow diagram
N197 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N197.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01212
Igniter for belt tensioner behind passenger's seat - Wiring damaged. - Fault finding according to
-N197 short circuit to positive circuit - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01212

10 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Igniter for belt tensioner behind passenger's seat - Wiring damaged. - Fault finding according to
-N197 short circuit to earth - Igniter for belt tensioner - current flow diagram
N197 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N197.
Replace contr. unit for airbag
-J234.
01212
Igniter for belt tensioner behind passenger's seat - Wiring damaged. - Fault finding according to
-N197 open circuit - Igniter for belt tensioner - current flow diagram
N197 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N197.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01213
Igniter for rear belt tensioner, centre -N198 Re‐ - Wiring damaged. - Fault finding according to
sistance value too great - Igniter for belt tensioner - current flow diagram
N198 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N198.
Replace contr. unit for airbag
-J234.
01213
Igniter for rear belt tensioner, centre -N198 Re‐ - Wiring damaged. - Fault finding according to
sistance value too low - Igniter for belt tensioner - current flow diagram
N198 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N198.
Replace contr. unit for airbag
-J234.
01213
Igniter for rear belt tensioner, centre -N198 Short - Wiring damaged. - Fault finding according to
circuit to positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Replace contr. unit for airbag
with respect to the correctness of information in this document. Copyright by AUDI AG. -J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01213
Igniter for rear belt tensioner, centre -N198 Short - Wiring damaged. - Fault finding according to
circuit to earth - Igniter for belt tensioner - current flow diagram
N198 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N198.
Replace contr. unit for airbag
-J234.

2.5 - Fault table for BTU airbag system 11

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01213
Igniter for belt tensioner, centre -N198 Open circuit - Wiring damaged. - Fault finding according to
- Igniter for belt tensioner - current flow diagram
N198 defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace igniter for belt ten‐
sioner -N198.
Replace contr. unit for airbag
-J234.
01217
Igniter for side airbag, driver's side -N199 resist‐ - Open circuit - Fault finding according to
ance value too high - Side airbag unit, driver's current flow diagram
side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace side airbag driver's
side.
Replace contr. unit for airbag
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
-J234.
with respect to the correctness of information in this document. Copyright by AUDI AG.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01217
Igniter for side airbag, driver's side -N199 resist‐ - Wiring short - Fault finding according to
ance value too low - Side airbag unit, driver's current flow diagram
side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace side airbag driver's
side.
Replace contr. unit for airbag
-J234.
01217
Igniter for side airbag, driver's side -N199 short to - Wiring damaged. - Fault finding according to
positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01217
Igniter for side airbag, driver's side -N199 short to - Wiring damaged. - Fault finding according to
earth - Side airbag unit, driver's current flow diagram
side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace side airbag driver's
side.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01218

12 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Igniter for passenger's side airbag -N200 resist‐ - Open circuit - Fault finding according to
ance value too high - Side airbag unit, passeng‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace airbag unit, passeng‐
er's side.
Replace contr. unit for airbag
-J234.
01218
Igniter for passenger's side airbag -N200 resist‐ - Wiring short - Fault finding according to
ance value too low - Side airbag unit, passeng‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace airbag unit, passeng‐
er's side.
Replace
Protected by copyright. Copying for private or commercial purposes, in partcontr. unit
or in whole, for airbag
is not
permitted unless authorised by AUDI AG. AUDI AG does not-J234.guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
01218
Igniter for passenger's side airbag -N200 short cir‐ - Wiring damaged. - Fault finding according to
cuit to positive terminal - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01218
Igniter for passenger's side airbag -N200 short cir‐ - Wiring damaged. - Fault finding according to
cuit to earth - Side airbag unit, passeng‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace airbag unit, passeng‐
er's side.
Replace contr. unit for airbag
-J234.
01219
Igniter for rear side airbag driver's side -N201 re‐ - Open circuit - Fault finding according to
sistance value too high - Rear side airbag unit driv‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace rear side airbag driv‐
er's side.
Replace contr. unit for airbag
-J234.
01219
Igniter for rear side airbag driver's side -N201 re‐ - Wiring short - Fault finding according to
sistance value too low - Rear side airbag unit driv‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace rear side airbag driv‐
er's side.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

2.5 - Fault table for BTU airbag system 13

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01219
Igniter for rear side airbag driver's side -N201 short - Wiring damaged. - Fault finding according to
to earth - Rear side airbag unit driv‐ current flow diagram
er's side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace rear side airbag driv‐
er's side.
Replace contr. unit for airbag
-J234.
01219
Igniter for rear side airbag driver's side -N201 short - Wiring damaged. - Fault finding according to
to positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01220
Igniter for rear side airbag, passenger's side -N202 - Open circuit - Fault finding according to
resistance value too high - Rear side airbag unit pas‐ current flow diagram
senger side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace rear side airbag, pas‐
senger side.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01220
Igniter for rear side airbag passenger side -N202 - Wiring short - Fault finding according to
resistance value too low - Rear side airbag unit pas‐ current flow diagram
senger side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not

with respect to the correctness of information in this document. Copyright by AUDI AG.Fitting Locations binder
J234 defective.
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability

Replace rear side airbag, pas‐

senger side.
Replace contr. unit for airbag
-J234.
01220
Igniter for rear side airbag passenger side -N202 - Wiring damaged. - Fault finding according to
short circuit to positive - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01220
Igniter for rear side airbag passenger side -N202 - Wiring damaged. - Fault finding according to
short circuit to earth - Rear side airbag unit pas‐ current flow diagram
senger side defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace rear side airbag, pas‐
senger side.
Replace contr. unit for airbag
-J234.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

14 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01221
Crash sensor for driver's side airbag (lateral ac‐ - Open circuit - Fault finding according to
celeration sensor) -G179 open circuit - Connector in wiring to current flow diagram
crash sensor driver's side is => Current Flow Diagrams,
open. Electrical Fault-finding and
- Crash sensor defective. Fitting Locations binder
- Control unit for airbag - Close connection.
J234 defective. Replace crash sensor -G179.
Replace control unit for airbag
-J234.
01221
Crash sensor for driver's side airbag (lateral ac‐ - Short in wiring to positive or - Fault finding according to
celeration sensor) -G179 short circuit earth. current flow diagram
- Crash sensor defective. => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Replace crash sensor -G179.
Replace control unit for airbag
-J234.
01221
Crash sensor for driver's side airbag (lateral ac‐ - Control unit for airbag - - Replace control unit for air‐
celeration sensor) -G179 not authorised. J234 wrongly encoded. bag -J234.
- Control unit and crash sen‐ Replace crash sensor -G179.
sor do not match.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01222
Crash sensor, passenger's side airbag (lateral ac‐ - Open circuit - Fault finding according to
celeration sensor) -G180 open circuit - Connector in wiring to current flow diagram
crash sensor passenger => Current Flow Diagrams,
side is open. Electrical Fault-finding and
- Crash sensor defective. Fitting Locations binder
- Control unit for airbag - Close connection.
J234 defective. Replace crash sensor -G180.
Replace control unit for airbag
-J234.
01222
Crash sensor, passenger's side airbag (lateral ac‐ - Short in wiring to positive or - Fault finding according to
celeration sensor) -G180 short circuit earth. current flow diagram
- Crash sensor defective. => Current Flow Diagrams,
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI- Control
AG doesunit for airbag
not guarantee - any liability
or accept Electrical Fault-finding and
J234
with respect to the correctness of information defective.
in this Fitting Locations binder
document. Copyright by AUDI AG.
Replace crash sensor -G180.
Replace control unit for airbag
-J234.
01222
Crash sensor, passenger's side airbag (lateral ac‐ - Control unit for airbag - - Replace control unit for air‐
celeration sensor) -G180 not authorised J234 wrongly encoded. bag -J234.
- Control unit and crash sen‐ Replace crash sensor -G180.
sor do not match.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01223
Signal: Open central locking system - Control unit for airbag -J234 de‐ - Replace control unit for airbag -
fective. J234.
01228

2.5 - Fault table for BTU airbag system 15

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Key sw. Switch off airbag, BTU -E224. - Open circuit - Fault finding according to current
Open circuit - Key switch -E224 defective. flow diagram
Short to positive - Control unit for airbag -J234 de‐ => Current Flow Diagrams, Electri‐
fective. cal Fault-finding and Fitting Loca‐
tions binder
Replace key switch -E224.
Replace control unit for airbag -
J234.
01228
Key sw. Switch off airbag, BTU -E224. - Wiring damaged. - Fault finding according to current
Short to earth - Key switch -E224 defective. flow diagram
- Control unit for airbag -J234 de‐ => Current Flow Diagrams, Electri‐
fective. cal Fault-finding and Fitting Loca‐
tions binder
Replace key switch -E224.
Replace control unit for airbag -
J234.

Output on printer V.A.G 1551

Protected Possible
by copyright. Copying for private or commercial causes
purposes, inof fault
part or in whole, Fault
is not remedy
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
01280 1) with respect to the correctness of information in this document. Copyright by AUDI AG.
Passenger airbag deactivated - Passenger's airbag has - Adapt control unit for airbag
been deactivated via adap‐ -J234 accordingly.
tion.
01578
Warning lamp for passenger's airbag -K 145 short - Wiring damaged. - Fault finding according to
circuit to positive terminal - Control unit for airbag - current flow diagram
J234 defective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace contr. unit for airbag
-J234.
01578
Warning lamp for passenger's airbag -K 145 open - Wiring damaged. - Fault finding according to
circuit / short circuit to earth - Warning lamp for passen‐ current flow diagram
ger airbag -K145 defective => Current Flow Diagrams,
- Control unit for airbag - Electrical Fault-finding and
J234 defective. Fitting Locations binder
Repl. warning lamp for pass.
airbag
Replace contr. unit for airbag
-J234.
01588
Igniter for head airbag, driver's side -N251 - Open circuit - Rectify open circuit in wiring
Resistance value too high - Head airbag driver's side Repl. head airbag unit (driv‐
defective. er's side).
- Airbag control unit defec‐ Replace airbag control unit.
tive.
1) Only airbag 7 and airbag 8. Fault message is only stored with appropriate adaption "passenger's airbag
disabled".

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01588
Igniter for head airbag, driver's side -N251 - Wiring short - Remedy wiring short.
Resistance value too low - Head airbag driver's side de‐ Replace head airbag unit
fective. (driver's side).
- Airbag control unit defective. Replace airbag control unit.
01588
Igniter for head airbag, driver's side -N251 - Wiring damaged. - Rectify wiring damage
Short to positive - Airbag control unit defective. Replace airbag control unit.

16 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01588
Igniter for head airbag, driver's side -N251 - Wiring damaged. - Rectify wiring damage
Short to earth - Head airbag driver's side de‐ Replace head airbag unit
fective. (driver's side).
- Airbag control unit defective. Replace airbag control unit.
01589
Igniter for head airbag, passenger's side -N252 - Open circuit - Rectify open circuit in wiring
Resistance value too high - Head airbag unit (passeng‐ Replace head airbag unit
er's side) defective. (passenger's side).
- Airbag control unit defective. Replace airbag control unit.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01589
IgniterProtected
for head airbag,
by copyright. passenger's
Copying side -N252
for private or commercial - Wiring
purposes, in part or short
in whole, is not - Remedy wiring short.
Resistance
permittedvalue too lowby AUDI AG. AUDI AG does not guarantee
unless authorised - Head airbag
or accept unit (passeng‐
any liability Replace head airbag unit
er's side) defective.
with respect to the correctness of information in this document. Copyright by AUDI AG.
(passenger's side).
- Airbag control unit defective. Replace airbag control unit.
01589
Igniter for head airbag, passenger's side -N252 - Wiring damaged. - Rectify wiring damage
Short to positive - Airbag control unit defective. Replace airbag control unit.
01589
Igniter for head airbag, passenger's side -N252 - Wiring damaged. - Rectify wiring damage
Short to earth - Head airbag unit (passeng‐ Replace head airbag unit
er's side) defective. (passenger's side).
- Airbag control unit defective. Replace airbag control unit.
65535 1)
Control unit defective - Replace control unit for air‐
bag -J234.

1) Fault message appears even when control unit has been triggered three times.

Note:

The fault "65535 Control unit defective" cannot be erased with fault reader V.A.G 1551!

2.6 - Interrogating airbag control unit version

- Press keys -0- and -1-.

-> Indicated on display:

Rapid data transfer Q
01 - Interrogate control unit version

- Confirm input with Q key.

-
4B0959655C Airbag 7 AUDI D00
Code 00104 WSC 06812

-> Indicated on display (vehicles with front and side airbags):

-
4B0959655 Airbag 6 AUDI D00
Code 00004 WSC 06812

-> Indicated on display (vehicles with front airbags):

2.5 - Fault table for BTU airbag system 17

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Explanation of the display

Vehicles up to week 36.98:

◆ 4B0959655C: Airbag control unit number (front and side airbags)

◆ 4B0959655J: Airbag control unit number (front and side airbags)
◆ 4B0959655: Number of airbag control unit (front airbags only):
◆ Airbag 7: BTU-Airbag (basic triggering unit)
◆ Airbag 6: BTU-Airbag (basic triggering unit)
◆ AUDI D00: Software version of airbag control unit in Audi models
◆ Code 00104: Coding => Page 20
◆ Code 00004: Coding => Page 20
◆ WSC 06812: Workshop code

- The ⇒ key is used to return to the basic function.

Vehicles as of week 36.98:

-
4B0959655G Airbag front + side 0004
Code 01104 WSC 06812

-> After about 5 seconds, the following appears on the display:

Explanation of the display

◆ 4B0 959 655 G: Part no. of airbag control unit (Front and side airbags)
◆ 4B0 959 655 E: Part no. of airbag control unit (Front and head airbags)

Note:

For vehicles with airbag 8; the display shows Airbag front + side or Airbag front + head instead of airbag 6 or
airbag 7.

◆ AUDI 0004: Software version of control unit in Audi models

◆ Code 01104: Coding => Page 20
◆ WSC 06812: Workshop code

- The ⇒ key is used to return to the basic function.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

2.7 - Final control diagnosis up to CW 18.99.

The final control diagnosis checks the function of the crash output. When the airbags are triggered, the central
locking system switches immediately to UNLOCK and the internal central locking switch is disabled. The hazard
warning lights and the interior lights are switched on.

Note:

Before carrying out the final control diagnosis the central locking must be switched to "locked" (use internal
switch).
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Performing function "03 -unless
permitted finalauthorised
controlbydiagnosis"
AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

18 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press keys -0- and -3-.

-> Indicated on display:

Rapid data transfer Q
03 - Final control diagnosis

- Confirm input with Q key.

-> Indicated on display:

Final control diagnosis
Signal: Open central locking system

Central locking must switch to "open".

The hazard warning lights and interior lights come on.

- Press the internal switch. The central locking system must not switch back to "lock".

-> Indicated on display:

Final control diagnosis
End

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

2.8 - Final control diagnosis as of week 18.99

The final control diagnosis checks the function of the crash output. When the airbags are triggered, the central
locking system switches immediately to UNLOCK, the internal central locking switch is disabled, and the fuel
supply is interrupted. The hazard warning lights and the interior lights are switched on.

Notes:

◆ Before carrying out the final control diagnosis, the central locking system must be switched to "close" (press
the internal switch) and the engine started.
◆ Switch interior light switch to position "door contact".
◆ After the Final Control Diagnosis, the central locking controls are not active until the fault memory of CL
control unit has been erased.

Performing function "03 - final control diagnosis"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -3-.

-> Indicated on display:

Rapid data transfer Q
03 - Final control diagnosis

- Confirm input with Q key.

-> Indicated on display:

Final control diagnosis Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Signal: Open central locking system
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

2.7 - Final control diagnosis up to CW 18.99. 19

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

The engine must switch off.

Central locking must switch to "open".

The hazard warning lights and interior lights come on.

- Press the internal switch. The central locking system must not switch back to "lock".

Notes:

After this step has been performed, fault code 01366 will be stored in the CL control unit.

After completing the final control diagnosis the fault memory of the CL control unit must be read and this fault
must be erased => Page 86 .

After this step has been performed, several faults will be stored in the fault memory of the engine control unit.

After completing the final control diagnosis the fault memory of the engine control unit must be read and this
fault must be erased. Refer to ignition and injection in the Workshop Manual in Repair group: 01 Self-diagnosis;
erasing and interrogating fault memory.

According to engine type, the fuel supply shuts off as of week 18.99 onwards.

If the engine does not start, check whether the fuel supply shut off in the engine has been activated.

=> Current flow

Protected diagrams
by copyright. binder
Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
If the engine does not start and the fuel supply shut off in the engine has been activated, check wiring to the
engine.

=> Current flow diagrams binder

-> Indicated on display:

Final control diagnosis
End

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

2.9 - Encoding airbag control unit

Notes:

◆ Control unit is not factory-coded.

◆ The airbag fault light always lights up when the control unit is not encoded.
◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

20 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encoding control unit
Enter code number XXXXX (0-32000)

- Enter encoding for airbag control unit via the keypad:

Code: 00104

Vehicles up to week 36.98:

◆ 00104: Vehicles with front airbags, front side airbags, front belt tensioners and 2 rear belt tensioners
◆ 00106: Vehicles with front airbags, front side airbags, front belt tensioners and 3 rear belt tensioners
◆ 00004: Vehicles with front airbags, front belt tensioners and 2 rear belt tensioners

◆ 00006: Vehicles with front airbags, front belt tensioners and 3 rear belt tensioners
◆ 00204: Vehicles with front airbags, front side airbags, rear side airbags, front belt tensioners and 2 rear belt
tensioners
◆ 00206: Vehicles with front airbags, front side airbags, rear side airbags, front belt tensioners and 3 rear belt
tensioners
◆ 00205: Vehicles with front airbags, front side airbags, rear side airbags, front belt tensioners, 2 rear belt
tensioners and belt buckle interrogation.
◆ 00207: Vehicles with front airbags, front side airbags, rear side airbags, front belt tensioners, 3 rear belt
tensioners and belt buckle interrogation.
◆ 00115: Vehicles with front airbags, front side airbags, front belt tensioners, 2 rear belt tensioners, belt buckle
interrogation and front seat occupied sensor.

◆ 00117: Vehicles with front airbags, front side airbags, front belt tensioners, 3 rear belt tensioners, belt buckle
interrogation and front seat occupied sensor.

Notes:

For reasons of logistics vehicles between chassis no. 4BWN 024500 and 4BWN 033300 may be fitted with
"seat occupied" and "belt fastened" detector functions which are to a certain extent inactive.

On replacing a belt buckle within the above-mentioned vehicle chassis number circle a belt buckle without belt
buckle interrogation must be installed.

If a fault occurs with the seat occupied sensor it must be disconnected and the airbag control unit must be
coded as in a vehicle without seat occupied sensor.

-> Indicated on display: Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Code control unit Q permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Enter code number 00104 (0-32000) with respect to the correctness of information in this document. Copyright by AUDI AG.

- Confirm input with Q key.

-
4B0959655C Airbag 7 AUDI 0000
Code 00104 WSC 06812

-> The display shows the control unit identification with the entered code (00104).

-
4B0959655 Airbag 6 AUDI 0000
Code 00004 WSC 06812

-> The display shows the control unit identification with the entered code (00004).

2.9 - Encoding airbag control unit 21

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Note:

Codings 00104, 00106, 00206, 00205, 00115 and 00117 can only be entered with control unit "4B0959655C"
or "4B0959655J".

Explanation of display => Page 18

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Pressing keys -0- and -6- completes the function.

-> Indicated on display:

Rapid data transfer Q
06 - End output

- Confirm input with Q key.

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Vehicles as of CW 36.98:

Coding table for the airbag control unit

Airbag system Code number

Airbag 8 Vehicles with front airbags, front belt tensioner, two rear belt tensioners 00004
Airbag 8 Vehicles with front airbags, front belt tensioners and three rear belt tensioners 00006
Airbag 8 Vehicles with front airbags, front side airbags, front seat belt tensioners, 00104
two rear belt tensioners
Airbag 8 Vehicles with front airbags, front side airbags, front seat belt tensioners, 00106
three rear belt tensioners
Airbag 8 Vehicles with front airbags, front side airbags, rear side airbags, 00204
front belt tensioners,
permitted two
unlessrear beltbytensioners
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
authorised AUDI AG. AUDI AG does not guarantee or accept any liability
Airbag 8 Vehicles with front airbags, front side airbags, rear side airbags,
with respect to the correctness of information in this document. Copyright by AUDI AG.
00206
front belt tensioners, three rear belt tensioners
Airbag 8 Vehicles with front airbags, front belt tensioner, two rear belt tensioners, 01004
key switch, switch off Airbag BTU
Airbag 8 Vehicles with front airbags, front belt tensioners, three rear belt tensioners, 01006
key switch, switch off Airbag BTU
Airbag 8 Vehicles with front airbags, front side airbags, front seat belt tensioners, 01104
two rear belt tensioners, key switch, switch off Airbag BTU
Airbag 8 Vehicles with front airbags, front side airbags, front seat belt tensioners, 01106
three rear seat belt tensioners, key switch to switch off Airbag BTU

Airbag system Code number

Airbag 8 Vehicles with front airbags, front side airbags, rear side airbag, 01204
front belt tensioners, two rear belt tensioners,
key switch, switch off Airbag BTU

22 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Airbag system Code number

Airbag 8 Vehicles with front airbags, front side airbags, rear side airbag, 01206
front belt tensioners, three rear belt tensioners,
key switch, switch off Airbag BTU
Airbag 8 vehicles with front airbags, front side airbags, front seat belt tensioners, 00304
head airbag, two rear seat belt tensioners
Airbag 8 Vehicles with front airbags, front side airbags, front belt tensioners, 00306
three rear belt tensioners and head airbag
Airbag 8 Vehicles with front airbags, front side airbags, rear side airbag, 00404
front belt tensioners, head airbag, two rear belt tensioners
Airbag 8 Vehicles with front airbags, front side airbags, rear side airbag, 00406
front belt tensioners, three rear belt tensioners, head airbag
Airbag 8 vehicles with front airbags, front side airbags, front seat belt tensioners, head 01304
airbag, two rear seat belt tensioners, key switch to switch off Airbag BTU
Airbag 8 Vehicles with front airbags, front side airbags, front seat belt tensioners, 01306
three rear belt tensioners, head airbag, key switch switch off Airbag BTU
Airbag 8 Vehicles with front airbags, front side airbags, rear side airbag, 01404
front belt tensioners, head airbag, two Protected
rear belt tensioners,
key switch, switch off Airbag BTU
by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Airbag 8 Vehicles with front airbags, frontwithside airbags,
respect rear side
to the correctness airbags,
of information in this document. Copyright by AUDI AG. 01406
front belt tensioners, three rear belt tensioners, head airbag,
key switch, switch off Airbag BTU

2.10 - Reading measured value block

Note:

The function "Read measured value block" reads the actual airbag system condition.

Performing function "08 - Read measured value block"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -8-.

-> Indicated on display:

Rapid data transfer Q
08 - Reading measured value block

- Confirm input with Q key.

-> Indicated on display:

Reading measured value block
Enter display group number XXX

- Enter display group number 001 and confirm input with Q key.

The measured value block which has been selected will appear in standard format. Evaluation up to CW 36.98
(up to airbag 7) => Page 26 .

2.9 - Encoding airbag control unit 23

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

2.11 - Summary of measured value blocks

Vehicles up to week 36.98:

Measured value block 001

Indicated on display: Display value Designation

Read measured value block 1 correct 1) 1 = Airbag, driver's side
1234 correct 1) 2= Airbag, passenger side
correct 1) 3 = Belt tensioner, driver's side
correct 1) 4 = Belt tensioner, passenger's side

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high Resistance too high
to earth Short to earth
to positive Short to positive

Possible causes of fault and fault remedy => from page 5 .

Measured value block 002

Indicated on display: Display value Designation

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Read measured value block 2 correct 1) unless
permitted 1 =authorised
Rear belt tensioner,
by AUDI AG. AUDI AGdriver's side or accept any liability
does not guarantee

123
with respect to the correctness of information in this document. Copyright by AUDI AG.
correct 1) 2 = Rear belt tensioner, passenger side
correct 1) 3 = Rear belt tensioner, centre

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high 1) Resistance too high
to earth Short to earth
to positive Short to positive

1) Display also possible if no belt tensioner is present.

Possible causes of fault and fault remedy => from page 5 .

24 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Measured value block 003

Indicated on display: Display value Designation

Read measured value block 3 correct 1) 1= supply voltage
1234 occupied 1) 2= seat occupied sensor, passenger side
Belt: yes 1) 3 = Belt buckle switch, driver's side
Belt: yes 1) 4 = Belt buckle switch, passenger side

1) Example.

Table of readouts

1 2 3 4
correct Used Belt: yes Belt: yes
too low Not used Belt: no Belt: no
connected to reverse polarity not defined not defined
too low too low too low
too high 2) too high 3) too high 3)
to earth to earth to earth
to positive to positive to positive

2) This readout will also appear even if no seat occupied sensor is fitted for the passenger's seat.

3) This readout will also appear even if no belt buckle switches are fitted.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Possible causes of fault and fault remedy => from page 5 .
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Measured value block 004

Indicated on display: Display value Designation

Read measured value block 4 Belt: yes 1) 1 = Rear seat belt check, driver's side
123 Belt: yes 1) 2 = Rear seat belt check, passenger'side
Belt: yes 1) 3 = Rear seat belt check (centre)

1) Example.

Table of readouts

Belt: yes
Belt: no
correct Resistance OK
too low Resistance too low
too high Resistance too high
to earth Short to earth
to positive Short to positive

Possible causes of fault and fault remedy => from page 5 .

2.11 - Summary of measured value blocks 25

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Measured value block 005

Indicated on display: Display value Designation

Read measured value block 5 correct 1) 1 = Igniter for front side airbag, driver' s side
1234 correct 1) 2 = Igniter for front side airbag, passenger's side
correct 1) 3 = Igniter for rear side airbag, driver' s side
correct 1) 4 = Igniter for rear side airbag, passenger's side

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high 2) Resistance too high
to earth Short to AG.
earth
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AUDI AG does not guarantee or accept any liability
to positive Short oftoinformation
with respect to the correctness positivein this document. Copyright by AUDI AG.

2) This readout will also appear even if no rear side airbags are fitted.

Possible causes of fault and fault remedy => from page 5 .

Vehicles as of week 36.98 (Airbag 8):

Measured value block 001

Indicated on display: Display value Designation

Read measured value block 1 correct 1) 1 = Airbag, driver's side
1234 correct 1) 2= Airbag, passenger side
correct 1) 3 = Belt tensioner, driver's side
correct 1) 4 = Belt tensioner, passenger's side

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high Resistance too high
to earth Short to earth
to positive Short to positive

Possible causes of fault and fault remedy => from page 5 .

Measured value block 002

Indicated on display: Display value Designation

Read measured value block 2 correct 1) 1 = Rear belt tensioner, driver's side

26 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Indicated on display: Display value Designation

1234 correct 1) 2 = Rear belt tensioner, passenger side
correct 1) 3 = Rear belt tensioner, centre
too high 1) 4 = Disregard display zone

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high 2) Resistance too high
to earth Short to earth
to positive Short to positive

2) Display also possible if no belt tensioner is present.

Possible causes of fault and fault remedy => from page 5 .

Measured value block 004

Indicated on display: Display value Designation

Read measured value block 4 Belt: yes 1) 1 = Rear seat belt check driver's side
123 Belt: yes 1) 2 = Rear seat belt check passenger'side
Belt: yes 1) 3 = Rear seat belt check (centre)

1) Example.

Table of readouts

Belt: yes
Belt: no
correct Resistance OK
too low Resistance too low
too high Resistance too high
to earth Short to earth
to positive Short to positive

Possible causes of fault and fault remedy => from page 5 .

Measured value block 006 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Indicated on display: Display value Designation

Read measured value block 6 correct 1) 1 = Igniter for front side airbag, driver' s side
1234 correct 1) 2 = Igniter for front side airbag, passenger's side
correct 1) 3 = Igniter for rear side airbag, driver' s side

2.11 - Summary of measured value blocks 27

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Indicated on display: Display value Designation

correct 1) 4 = Igniter for rear side airbag, passenger's side

1) Example.

Table of readouts

correct Resistance OK
too low Resistance too low
too high 2) Resistance too high
to earth Short to earth
to positive Short to positive

2) This readout will also appear even if no rear side airbags are fitted.

Possible causes of fault and fault remedy => from page 5 .

Measured value block 008

Indicated on display: Display value Designation

Read measured value block 8 correct 1) 1 = Igniter front side airbag, second stage, driver's side
1234 correct 1) 2 = Igniter for airbag, second stage, passenger's side
correct 1) 3 = Igniter for rear head airbag, driver' s side
correct 1) 4 = Igniter for rear head airbag, passenger' s side

1) Example.

Table of readouts

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
correct Resistance OK
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
too low Resistance too low
too high 2) Resistance too high
to earth Short to earth
to positive Short to positive

2) This display is also possible if no second stage or head airbag is present.

Possible causes of fault and fault remedy => from page 5 .

2.12 - Adaption: Disabling and activating passenger's airbag unit

With the function adaption the passenger airbag may be disabled and reactivated.

Performing function "10 - Adaption"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

28 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press keys -0- and -5-.

-> Indicated on display:

Rapid data transfer Q
10 - Adaption

- Confirm input with Q key.

-> Indicated on display:

Adaption
Feed in channel No.

- Press keys -0- and -1-.

-> Indicated on display:

Adaption Q
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Enter channel number 01
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Confirm input with Q key.

-> Indicated on display:

The current status of the passenger's airbag (e.g. deactivated) is displayed.
Channel 1 Adaption 1
Pass.-airbag disabled WSC 06812

0- Passenger airbag active

1- Passenger airbag deactivated

- Press ⇒key.

Deactivating passenger's airbag

Order a label with the registration card according to the individual components catalogue.

-> Indicated on display:

Channel 0 Adaption 1
Enter adaption value XXXXX

- Enter adaption value 00001.

-> Indicated on display:

Channel 1 Adaption 0 Q
Enter adaption value 00001

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 1 Q
Pass.-airbag disabled WSC 06812

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 1 Q
Store changed value?

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 1
Changed value is stored

2.12 - Adaption: Disabling and activating passenger's airbag unit 29

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press the ⇒ key to terminate the adaption procedure.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Switch ignition off.

- Unplug connectors for fault reader V.A.G 1551.
- Switch the ignition on.

The warning lamp (K75) initially illuminates for approx. 4 seconds and then flashes for a further 12 seconds.
This indicates that the passenger airbag has been disabled. Customers should be made aware of the different
warning lamp signal.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
- Attach sticker (passenger airbag notpermitted
activated) to lid of glove compartment).
unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

The registration card enclosed with the sticker must be completed after deactivating the passenger side airbag
unit and sent to the relevant sales centre or importer for registration. Disabling of the passenger airbag is to be
confirmed by the workshop in the service schedule.

The second registration card must be carefully retained by the customer until the front passenger's module is
reactivated (Vehicle wallet).

Activating passenger's airbag

-> Indicated on display:

Channel 1 Adaption 1
Enter adaption value XXXXX

- Press key -0- five times.

-> Indicated on display:

Channel 1 Adaption 1 Q
Enter adaption value 00000

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 0 Q
Pass. airbag activated WSC 06812

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 0 Q
Store changed value?

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 0
Changed value is stored

- Press the ⇒ key to terminate the adaption procedure.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Remove label (passenger's airbag not functional) from lid of glove compartment.

30 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

The registration card supplied to the customer must be completed after activating the passenger side airbag
unit and sent to the relevant sales centre or importer for registration. Activation of the passenger airbag unit by
the workshop must be confirmed in the service schedule.

3 - Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag
My 2002 >
3.1 - Self-diagnosis of airbag system BTU (basic triggering unit) with side airbag My 2002 >

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
3.2 - Self-diagnosis in Guided Fault-finding via VAS5051

This self-diagnosis system is dealt with in the Guided Fault-finding only.

4 - Self-diagnosis of central locking system

4.1 - Self-diagnosis of central locking system

4.2 - General notes

Measures for remedying commonly occurring faults on particular models

=> Technical Service Handbook

Unlike the previous system which was pneumatically operated the new-generation central locking system op‐
erates via electric motors.

The lock units in the doors (door locks) have two electric motors each; the lock units for the boot lid/tailgate and
tank flap have only one.
The first motor locks the doors and the second activates the deadlock or lock isolating function ("SAFE" func‐
tion). This means that when the door is locked from the outside (door lock, remote) the vehicle is protected
against theft and cannot be unlocked from the inside. The contact switches in the lock units inform the control
unit of the status of the locks.

All the normal convenience functions, the interior lighting control, the security central locking and the anti-theft
alarm with interior monitor can be operated with the electrical central locking system

When the airbag control unit triggers, a signal goes automatically to the central locking control unit, to unlock
the doors, switch on interior lighting and hazard warning lights.

The control unit detects faults in the electrical central locking system and stores them in a permanent memory.

To commence fault finding, initiate self-diagnosis and retrieve the stored information with the fault reader V.A.G
1551.

System tester V.A.G 1552 can also be used.

All functions which have been carried out with the V.A.G 1551/1552 so far can also be carried out with the new
tester VAS 5051 in operation mode "Vehicle self-diagnosis".

=> Operating instructions for vehicle diagnostic, testing and information system VAS 5051

2.12 - Adaption: Disabling and activating passenger's airbag unit 31

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

4.3 - System description of anti-theft alarm with Thatcham ATW function (2nd generation)

With the introduction of product revaluation in Audi A6 (CW 18.01) the anti-theft alarm function (ATW) changes
as follows:

If the vehicle is unlocked manually via the driver's side lock cylinder only the driver door opens and all other
doors, the luggage compartment lid and the tank flap remain locked. Once the driver's door has been opened,
the key must be placed in the ignition lock and the ignition switched on within 15 seconds to switch off the anti-
theft alarm, otherwise the alarm will be triggered.
When the ignition is switched on the other doors, the luggage compartment lid and the tank flap are unlocked.
To provide increased anti-theft protection, the ATW is only switched off when the vehicle is unlocked when the
radio remote control fitted as standard is used.

Only applicable to vehicles with anti-theft alarm fitted as option.

Further information on the 2nd generation anti-theft alarm can be found in the operating instructions.

4.4 - Initiating self-diagnosis of the central locking system

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

◆ Connect fault reader V.A.G 1551

=>Page 1 .
◆ Anti-theft alarm not activated.
◆ Key not in ignition.

Notes:

◆ If the display remains blank, check voltage supply to V.A.G 1551 according to current flow diagram.
◆ Additional operating instructions can be called up with the fault reader HELP key.
◆ The ⇒ key is used for the continuation of the program sequence.
◆ If an incorrect entry is made, press the C key to escape.

- Switch on printer with the Print key (indicator lamp in key lights up).
- Press key 1 for "Rapid data transfer".

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for the central locking: 35

- Press keys -3- and -5-.

-> Indicated on display:

Rapid data transfer Q
35 - Central locking system

- Confirm inputbywith
Protected Q key.
copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
-> Indicatedwith
onrespect
display:
to the correctness of information in this document. Copyright by AUDI AG.

Rapid data transfer

Tester sends address word 35

-> After about 5 seconds the following display will appear (e.g. for vehicles without anti-theft alarm):

32 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

4B0962258D Central locking D30

⇒
Code 4673 WSC 06812

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

Note:

Press HELP key to obtain a printout of available functions.

Self-diagnosis functions

The following functions are possible:

01 - Interrogating control unit version => 41 .

02 - Interrogating fault memory => 33 .

03 - Final control diagnosis => 41 .

05 - Erasing fault memory => Page 86 .

06 - End output => Page 87 .

07 - Coding control unit => Page 44 .

08 - Read measured Protected

value
permittedblock => Page 49AG. . AUDI AG does not guarantee or accept any liability
by copyright. Copying for private or commercial purposes, in part or in whole, is not
unless authorised by AUDI
with respect to the correctness of information in this document. Copyright by AUDI AG.
10 - Adaption=> Page 57 .

4.5 - Interrogating fault memory

Note:

The displayed fault information is not constantly updated but only when initiating self-diagnosis or with function
05 "Erase fault memory".

- Switch on printer with the Print key (indicator lamp in key lights up).

Performing function 02- "Interrogating fault memory"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -2-.

-> Indicated on display:

Rapid data transfer Q
02 - Interrogate fault memory

- Confirm input with Q key.

-> The number of faults stored appears on the display.

4.4 - Initiating self-diagnosis of the central locking system 33

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

X fault recognised

The stored faults are displayed and printed out one after the other.

- Check printout against fault table and rectify all faults as necessary => Page 34 .

-> If the message "No fault recognised" is displayed, the program returns to its start position when pressing the
⇒key.
No fault recognised

-> Indicated on display:

Rapid data transfer HELP
Select function XX

If something else is displayed:

=> Fault reader operating instructions

- Erase fault memory (function 05).

=>Page 86 .
- End output (function 06) => Page 87
- Unplug diagnostic connector.

The fault information which is displayed indicates specific repair measures via a fault table.

The fault memory also stores faults caused by temporary open circuits or loose contacts. These faults will
appear on the display as sporadic faults "SP".

Note:
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Before any replacement of a component, the fault memory must be erased, a functional test must be performed
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability

and the fault memory must be re-interrogated.

with respect to the correctness of information in this document. Copyright by AUDI AG.

4.6 - Fault table for the central locking

Notes:

◆ The following table lists all the faults, with the corresponding 5-digit code numbers, that can be recognised
by the central locking control unit and printed out by the V.A.G 1551.
◆ Fault codes appear only on print-out.
◆ Before replacing a component shown as faulty, check wiring and connections to component as well as earth
connections according to current flow diagram.
◆ Once repairs have been completed, the fault memory is always to be interrogated again with fault reader
V.A.G 1551 and erased. The vehicle is then to be relocked (with key or remote) and the fault memory is re-
interrogated.
◆ The fault memory records all static and sporadic faults.
When a fault occurs it is immediately identified as a static fault. If fault does not occur again it is registered
as a sporadic fault. "/SP" appears on the right of the display.
◆ When ignition is switched on, all existing faults are automatically reclassified as sporadic faults and will only
register as static faults if they still occur after testing.
◆ Sporadic faults which no longer occur after 50 opening cycles are erased automatically.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00668

34 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Vehicle voltage terminal 30 - Battery discharged / defective - Recharge battery or replace if

Signal too low - Fault in wiring or connectors defective
Fault finding according to current
flow diagram
=> Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
00849
S-contact on ignition starter -D - Short to earth in the wiring. - Fault finding according to current
Open circuit/short circuit to earth - S-contact defective flow diagram
=> Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
If necessary, replace ignition
starter switch
00947
Remote control switch for Tailgate -E188 - Short to earth in the wiring. - Fault finding according to current
Short to earth - Remote control switch-E188 for flow diagram
unlocking tailgate defective => Current Flow Diagrams, Elec‐
Protected by copyright. Copying for private or commercialtrical Fault-finding
purposes, and
in part or in whole, is notFitting Lo‐
permitted unless authorised by AUDI AG. AUDI AG doescations binder
not guarantee or accept any liability
CheckCopyright
with respect to the correctness of information in this document. remote control
by AUDI AG. switch for
unlocking of tailgate and replace,
if necessary
=> Electrical System; Repair
group 96; Servicing switch Serv‐
icing switch

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00951
Rel. for t/gate rem.ctrol.switch -J398 - Short to earth in the wiring. - Fault finding according to current
Short to earth - Tailgate/boot lid remote control flow diagram
unlocking motor -V151 defective => Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations
binder
Replace tailgate/boot lid remote con‐
trol unlocking motor -V151
00952
Signal driver's door open - Short in the wiring - Fault finding according to current
Short to positive flow diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations
binder

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00955
Key 1 (adaption limit exceeded) - Key operated more than 200 times - Perform key matching procedure =>
while out of range Page 56
00956
Key 2 (adaption limit exceeded) - Key operated more than 200 times - Perform key matching procedure =>
while out of range Page 56
00957
Key 3 (adaption limit exceeded) - Key operated more than 200 times - Perform key matching procedure =>
while out of range Page 56
00958
Key 4 (adaption limit exceeded) - Key operated more than 200 times - Perform key matching procedure =>
while out of range Page 56

4.6 - Fault table for the central locking 35

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00991
Interior lighting - Short in the wiring - Fault finding according to current flow
Short to positive diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
01141
TG/BL release switch -E165 - Short to earth in the wiring. - Fault finding according to current flow
Short to earth - Release switch tailgate/boot lid - diagram
E165 defective. => Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Check TG/BL release switch -E165 and
replace if necessary
=> General Body Assembly, Exterior;
Repair group 55; Boot lid/tailgate Boot
lid/tailgate
01366
Opening via crash signal - Final control diagnosis on the airbag - Delete fault memory => Page 86
Short to earth control unit -J234 or on the central Check wiring and connections between
Open circuit/short to positive locking control unit -J429 has been airbag control unit -J234 and central
performed locking control unit -J429 according to
- Airbag control unit -J234 triggered by current flow diagram and repair if nec‐
crash situation essary
- Short or open circuit in wiring or in => Current Flow Diagrams, Electrical
connections between airbag control Fault-finding and Fitting Locations bind‐
unit -J234 and central locking control er
unit -J429

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01368
Alarm from boot switch - ATW has triggered as a result of un‐ - Delete fault memory => Page 86
authorised opening of the tailgate. Check contact switch in tailgate/boot lid
- Contact switch in tailgate/boot lid - -F218 and replace, if necessary.
F218 defective. => Electrical System; Repair group 96;
- False alarm. Servicing switch Servicing switch
01369
Alarm from bonnet switch - ATW has triggered as a result of un‐ - Erase fault memory
authorised opening of the bonnet Check contact switch bonnet lid -F120
- Contact switch bonnet lid -F120 de‐ and replace, if necessary.
fective. => Electrical System; Repair group 96;
- False
Protected by alarm. Servicing
copyright. Copying for private or commercial purposes, in part switch Servicing
or in whole, is not switch
01370 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Alarm from interior monitor - ATW has triggered as a result of in‐ - Erase fault memory
Short to earth terior monitor Fault-finding after self-diagnosis ultra‐
- Control unit for ultrasonic sensors - sonic interior monitor=> Page 59
J347 defective Check wiring between ultrasonic sen‐
- Short circuit in the wiring between the sors control unit -J347 and central lock‐
ultrasonic sensors control unit -J347 ing control unit -J429 according to
and the central locking control unit - current flow diagram and repair if nec‐
J429 essary
- False alarm. => Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01371

36 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Alarm triggered by driver's door contact switch. - ATW has triggered as a re‐ - Delete fault memory => Page
sult of unauthorised opening 86
of driver's door. Check door contact switch -F2
- Door contact switch -F2 de‐ and replace if necessary.
fective => Electrical System; Repair
- False alarm. group 96; Servicing switch
Servicing switch
01373
Alarm triggered by earth contact - ATW has triggered as a re‐ - Erase fault memory
Radio sult of unauthorised removal Establish earth connection.
of radio. => Current Flow Diagrams,
- Earth connection for ATW is Electrical Fault-finding and Fit‐
interrupted ting Locations binder
- False alarm.
01374
Alarm from terminal 15 - ATW has triggered as a re‐ - Erase fault memory
sult of unauthorised starting Fault finding according to cur‐
(short-circuiting). rent flow diagram
- Short-circuit between termi‐ => Current Flow Diagrams,
nals 30 and 15. Electrical Fault-finding and Fit‐
- False alarm. ting Locations binder

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01389
Open switch for tailgate -F124. - Short to earth in the wiring. - Fault finding according to
Short to earth - Switch boot lid -F124 de‐ current flow diagram
fective. => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace switch for boot lid -
F124 in boot lid lock.
=> General Body Assembly,
Exterior; Repair group 55;
Protected by copyright. Copying for private or commercial purposes,Boot lid/tailgate
in part or in whole, is notBoot lid/tail‐
permitted unless authorised by AUDI AG. AUDI AG does not guarantee gate or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
01482
Motors for central locking - Short to earth in the wiring. - Fault finding according to
Short to earth - Motors for central locking current flow diagram
defective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Replace motor for central
locking
=> General Body Assembly,
Exterior; Repair group 57
01557
Close contact switch in locking cylinder pass. side - Short to earth in the wiring. - Fault finding according to
FS -F241 - Contact switch -F241 de‐ current flow diagram
Short to earth fective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Check contact switch -F241
and replace if necessary
=> General Body Assembly,
Exterior; Repair group 57

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01558

4.6 - Fault table for the central locking 37

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Close contact switch locking cylinder FS -F241 - Short to earth in the wiring. - Fault finding according to cur‐
Short to earth - Contact switch -F241 defec‐ rent flow diagram
tive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Check contact switch -F241
and replace if necessary
=> General Body Assembly,
Exterior; Repair group 57
01559
Driver's door - Mechanical defect in door - Fault finding according to cur‐
does not lock lock rent flow diagram
does not unlock - Open circuit Replace door lock driver's door
safe does not engage 1) - Short to earth => General Body Assembly,
safe does not disengage 1) - Relay adhesive in central Exterior; Repair group 57;
locking control unit (see also Front door Front door
HST 4.5- 361/1) Replace central locking contr.
unit -J429
01560
passenger door. - Mechanical defect in door - Fault finding according to cur‐
does not lock lock rent flow diagram
does not unlock - Open circuit Replace door lock passenger's
safe does not engage 1) - Short to earth door
safe does not disengage 1) - Relay adhesive in central => General Body Assembly,
locking control unit (see also Exterior; Repair group 57;
HST 4.5- 361/1) Front door Front door
Replace central locking contr.
unit -J429

1) not applicable for the USA

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01561
Door rear left - Mechanical defect in door - Fault finding according to cur‐
does not lock lock rent flow diagram
does not unlock - Open circuit => Current Flow Diagrams,
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not

safe does not engage 1) with respect to the correctness of information in this document. Electrical
- Short to earth Fault-finding and Fit‐
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Copyright by AUDI AG.
safe does not disengage 1) ting Locations binder
Replace lock in rear left door
=> General Body Assembly,
Exterior; Repair group 57; Rear
door Rear door
01562
Door rear right - Mechanical defect in door - Fault finding according to cur‐
does not lock lock rent flow diagram
does not unlock - Open circuit => Current Flow Diagrams,
safe does not engage 1) - Short to earth Electrical Fault-finding and Fit‐
safe does not disengage 1) ting Locations binder
Replace lock in rear right door
=> General Body Assembly,
Exterior; Repair group 57; Rear
door Rear door
01563

38 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Interior lock switch driver's side -E150, LOCK - Short to earth in the wiring. - Fault find. accord. to current
Short to earth - Switch for interior locking - flow diagr.
E150 defective => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Check switch for interior locking
-E150 and replace if necessary
=> Electrical System; Repair
group 96; Servicing switch
Servicing switch

1) not applicable for the USA

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01564
Interior lock switch driver's side -E150, UNLOCK - Short to earth in the wiring. - Fault finding according to
Short to earth - Switch for interior locking - current flow diagram
E150 defective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Check switch for interior lock‐
ing -E150 and replace if nec‐
essary
=> Electrical System; Repair
group 96; Servicing switch
Servicing switch
01565
Luggage compartment light -W3 - Short to earth in the wiring. - Fault finding according to
Short to earth - Luggage compartment current flow diagram
Short to positive light -W3 defective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Check luggage compartment
light -W3 and replace if nec‐
essary.
=> Electrical System; Repair
group 96; Servicing inside
lights Servicing inside lights
01566
Activate signal for interior monitor - Interior monitoring is not - Fault finding according to
Short to positive activated, no function current flow diagram
- Short in the wiring => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01568
Signal for comfort opening - Short in the wiring - Fault finding according to current flow diagram
Short to positive => Current Flow Diagrams, Electrical Fault-find‐
ing and Fitting Locations binder
01569
Signal for comfort closing - Short in the wiring - Fault finding according to current flow diagram
Short to positive => Current Flow Diagrams, Electrical Fault-find‐
ing and Fitting Locations binder
01570
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Switch-off delay
with respect to theterminal
correctness 15 - Short
of information todocument.
in this earth in the wiring.
Copyright - Fault finding according to current flow diagram
by AUDI AG.
Short to positive - Short in the wiring => Current Flow Diagrams, Electrical Fault-find‐
Short to earth ing and Fitting Locations binder
01571

4.6 - Fault table for the central locking 39

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Signal for seat memory - Short to earth in the wiring. - Fault finding according to current flow diagram
Short to earth => Current Flow Diagrams, Electrical Fault-find‐
ing and Fitting Locations binder

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01572
Alarm via door contact switch, passenger side - ATW has triggered as a re‐ - Delete fault memory => Page
sult of unauthorised opening 86
of the passenger door. Check door contact switch -F3
- Door contact switch -F3 de‐ and replace if necessary.
fective => Electrical System; Repair
group 96; Servicing switch
Servicing switch
01573
Alarm triggered by rear left door contact switch - ATW has triggered as a re‐ - Erase fault memory
sult of unauthorised opening Check door contact switch -
of rear left door F10 and replace if necessary.
- Door contact switch -F10 de‐ => Electrical System; Repair
fective group 96; Servicing switch
Servicing switch
01574
Alarm triggered by rear door contact switch - ATW has triggered as a re‐ - Erase fault memory
sult of unauthorised opening Check door contact switch -
of rear right door F11 and replace if necessary.
- Door contact switch -F11 de‐ => Electrical System; Repair
fective group 96; Servicing switch
Servicing switch

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01581
Wrong component recognised 1) - Wiring incorrect - Check wiring
- Wrong door locks fitted Fit correct door locks
01585
Close contact switch in locking cylinder pass. side - Short to earth in the wiring. - Fault finding according to
-F242 - Contact switch -F242 de‐ current flow diagram
Short to earth fective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Check contact switch -F242
and replace if necessary.
=> General Body Assembly,
Exterior; Repair group 57
01586
Close contact switch in locking cylinder pass. side - Short to earth in the wiring. - Fault find. accord. to current
pa -F242 - Contact switch -F242 de‐ flow diagr.
Short to earth fective => Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
Check contact switch -F242
and replace if necessary.
=> General Body Assembly,
Exterior; Repair group 57
65535 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Control unit defective permitted unless authorised by AUDI AG. -AUDICentral
AG does locking control
not guarantee unit
or accept any-liability
Replace central locking con‐
-J429
with respect to the correctness of information defective
in this trol unit -J429
document. Copyright by AUDI AG.

1) USA only

40 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

4.7 - Interrogating control unit version of central locking control unit

- Press keys -0- and -1-.

-> Indicated on display:

Rapid data transfer Q
01 - Interrogate control unit version

- Confirm input with Q key.

-
4B0962258D Central locking Dxx
Code 4673 WSC 06812

-> Indicated on display (vehicles without ATW):

-
4B0962258E Central locking, ATW Dxx
Code 4683 WSC 06812

-> Indicated on display (vehicles with ATW):

Explanation of the display

◆ 4B0962258D: Control unit number for CL

◆ 4B0962258E: Control unit number for CL
◆ Central locking: Component designation and version
◆ Central locking, anti-theft alarm: Component designation and version
◆ Dxx: Software version
◆ Code 4673: Coding => Page 44
◆ Code 4683: Coding => Page 44
◆ WSC 06812: Workshop code

- The ⇒ key is used to return to the basic function.

-> Indicated on display:

Rapid data transfer HELP Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Select function XX permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

- Press keys -0- and -6- to end output.

-> Indicated on display:

Rapid data transfer Q
06 - End output

- Confirm entry with Q key.

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

- Switch off ignition.

- Disconnect connectors for fault reader V.A.G 1551.

4.8 - Final control diagnosis

Notes:

◆ Switch off ignition; if necessary, start V.A.G 1551 again.

◆ The final control diagnosis may only be performed with the vehicle stationary and the engine not running!
◆ Any faults identified by the final control diagnosis must be traced and rectified!

4.7 - Interrogating control unit version of central locking control unit 41

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

The final control diagnosis activates the following elements in sequence:

◆ Generates alarm trigger (the alarm is output in turn via the alarm horn and the hazard warning lights)
◆ Activates interior monitor (will also be activated if interior monitor not fitted)
◆ Simulates crash signal (switches on hazard warning lights and actuates central locking to unlock all doors
to check crash signal)
◆ Actuates CL safe warning lamp -K133 (actuation of LED in doors)

◆ Signal to close central locking (lock)

◆ Activates deadlock in doors
◆ Signal to open central locking (unlock)
◆ End of final control diagnosis

Performing function "03 - final control diagnosis"

- Press keys -0- and -3-.

-> Indicated on display:

Rapid data transfer Q
03 - Protected by copyright. diagnosis
Final control Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Confirm input with Q key.

-> Indicated on display:

Final control diagnosis
Cause alarm to trigger

The alarm is output in turn via the alarm horn and the hazard warning lights.
Note:
If no ATW is fitted, the hazard warning lights are still actuated.
- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Activate interior monitor

The central locking control unit transmits a signal to activate the interior monitor.
Notes:
◆ The system requires a waiting time of 30 sec after activation of interior monitor.
◆ On activation of alarm an entry is made in the fault memory of central locking control unit "1370; Alarm from
interior monitor" and in the ultrasonic sensors control unit "Alarm from sensor for ATW, front left, front right,
rear left, rear right, front, rear".
◆ The faults in the fault memory of the relevant control unit must be read out and erased.

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

- Press ⇒key.

-> Indicated on display:

42 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Final control diagnosis

Simulate crash signal

Switching on hazard warning lights and actuation of central locking to unlock all doors.

Notes:

◆ The fault "1366, Opened via crash signal" is stored in the fault memory for the central locking control unit.

◆ Final control diagnosis is to be repeated with airbag control unit. When final control diagnosis of airbag
control unit has been carried out, the fault "01366 Opening via crash signal" is also stored in the central
locking control unit.
◆ The fault must be called up in the fault memory for the central locking control system => Page 86 .

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Warning lamp CL Safe -K133

The LED's in the doors are actuated.

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Signal: close central locking system

If the central locking system is not set to the UNLOCK position, it will switch to "LOCK".

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Activation of safing of doors

The vehicle cannot be opened fromProtected

the inside.
by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Press ⇒key.

-> Indicated on display:

Final control diagnosis
initiate next final control: press

4.8 - Final control diagnosis 43

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Signal: Open central locking system

If the central locking system is set to the LOCK position, it will switch to "UNLOCK".

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
End

- Press ⇒key.

This returns testing unit to basic function mode.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

4.9 - Encoding central locking control unit

Notes:

◆ The control unit is pre-coded at the factory.

◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encode control unit
Enter code number XXXXX (0-32000)

- Enter coding of the central locking control unit with keypad according to table:
e.g.: 6731 (CLbywith
Protected ATW/remote/door
copyright. logic) purposes, in part or in whole, is not
Copying for private or commercial
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Code6731

-> Indicated on display:

Code control unit Q
Enter code 06731 (0-32000)

44 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Confirm input with Q key.

-
4B0962258E Central locking, ATW D30
Code 6731 WSC 06812

-> The display shows the control unit identification with the entered code.

Note:
Explanation of display =>Page 41 .
- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- End output (function 06) => Page 87

4.10 - Coding table up to approx. CW 32.98 (two-key remote keys)

Note:
Before any changes are made find out what the existing coding is => Page 41 .

Basic encoding for central locking (CL) without anti-theft alarm (ATW) 4672 1)

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 4682 1)

1) The control units fitted in vehicles from the initial production run do not include the remote function for
automatic opening andby
Protected closing
copyright.of the electric
Copying for private window lifters.
or commercial The
purposes, basic
in part codings
or in whole, is not for the original control units were
4608 (without ATW) and
permitted 4618
unless (withbyATW).
authorised AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

In addition to the basic encoding customers can be offered the following extras:
without ATW with ATW
- Security central locking (basic code + 4) 4676 4686
- Luggage compartment locks automatically when vehicle starts moving 4688 4698
(basic code + 16) (with SCL 4692) (with SCL 4702)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 4704 4714
+ 32) (with SCL 4708) (with SCL 4718)

Notes:
The function of the security central locking system (SCL) is as follows (for locked vehicle):
◆ Once-only actuation of the CL system (with key or remote control) releases the driver's door and fuel filler
flap, whilst passenger's door remains locked.
◆ Immediate renewed actuation of the CL system releases the remaining doors and the tailgate/boot.

4.11 - Coding table up to CW 18.00 (with introduction of three-key remote keys)

Note:
◆ Before any changes are made find out what the existing coding is => Page 41 .
◆ When using the three- key remote keys, the tailgate can be unlocked/opened via the middle key.

4.9 - Encoding central locking control unit 45

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ The new coding includes the function that on mechanical unlocking of the tailgate (via tailgate lock), the
tailgate unlocks and opens and can therefore be opened without soft touch actuation.

Basic encoding for central locking (CL) without anti-theft alarm (ATW) 4673

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 4683

In addition to the basic encoding customers can be offered the following extras:
without ATW with ATW
- Security central locking (basic code + 4) 4677 4687
- Luggage compartment locks automatically when vehicle starts moving 4689 4699
(basic code + 16) (with SCL 4693) (with SCL 4703)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 4705 4715
+ 32) (with SCL 4709) (with SCL 4719)

4.12 - Coding table as of CW 18.00 (three-key remote keys)

Notes:

◆ Before any changes are made find out what the existing coding is => Page 41 .
◆ The new coding includes the altered door logic. As soon as any door is opened when "terminal 15 off", no
window lifters can be actuated.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Basic encoding forunless
permitted central locking
authorised (CL)
by AUDI AG. without anti-theft
AUDI AG does alarm
not guarantee (ATW)
or accept any liability 6721
with respect to the correctness of information in this document. Copyright by AUDI AG.

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 6731

In addition to the basic encoding customers can be offered the following extras:
without ATW with ATW
- Security central locking (basic code + 4) 6725 6735
- Luggage compartment locks automatically when vehicle starts moving 6737 6747
(basic code + 16) (with SCL 6741) (with SCL 6751)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 6753 6763
+ 32) (with SCL 6757) (with SCL 6767)

4.13 - Coding table as of CW 18.01 (with introduction of software version D35)

Notes:

◆ Before any changes are made find out what the existing coding is => Page 41 .
◆ The new code includes the Thatcham-ATW function for all control units with anti-theft alarm (ATW) fitted as
option. Accordingly in all vehicles, except those registered in Great Britain and Japan, the bit with the priority
rating 256 (alarm cycle sounder for ROW) must be set for an adapted alarm output by the anti-theft alarm.
◆ A more detailed explanation of the Thatcham-ATW function (2nd generation anti-theft alarm) can be found
in the system description of the anti-theft alarm => Page 32 .

46 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Basic encoding for central locking (CL) without anti-theft alarm (ATW) 6721

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 6987

In addition to the basic encoding customers can be offered the following extras:
without ATW with ATW
- Security central locking (basic code + 4) 6725 6991
- Luggage compartment locks automatically when vehicle starts moving 6737 7003
(basic code + 16) (with SCL 6741) (with SCL 7007)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 6753 7019
+ 32) (with SCL 6757) (with SCL 7023)

4.14 - Coding table as of CW 18.01 for vehicles with British registration (with introduction of
software version D35)

Note:

◆ Before any changes are made find out what the existing coding is => Page 41 .

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 6859

In addition to the basic encoding customers can be offered the following extras:
with ATW
- Security central locking (basic code + 4) 6863
- Luggage compartment locks automatically when vehicle starts moving (basic code + 16) 6875
(with SCL 6879)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code + 32) 6891
(with SCL 6895)

4.15 - Coding table as of CWProtected

18.01by for vehicles
copyright. Copying forwith
private Japanese registration
or commercial purposes, (with
in part or in whole, is not introduction

of software version D35) permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Note:

◆ Before any changes are made find out what the existing coding is => Page 41 .

Basic encoding for central locking (CL) without anti-theft alarm (ATW) 6657 6785 1)

Basic encoding for central locking (CL) with anti-theft alarm (ATW) 6667 6795 1)

In addition to the basic encoding customers can be offered the following extras:
without ATW with ATW
- Security central locking (basic code + 4) 6661 6671

4.13 - Coding table as of CW 18.01 (with introduction of software version D35) 47

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Luggage compartment locks automatically when vehicle starts moving 6673 6683
(basic code + 16) (with SCL 6677) (with SCL 6687)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 6689 6699
+ 32) (with SCL 6693) (with SCL 6703)

Vehicles designed for right-hand drive without ATW 1) with ATW 1)

- Security central locking (basic code + 4) 6789 6799
- Luggage compartment locks automatically when vehicle starts moving 6801 6811
(basic code + 16) (with SCL 6805) (with SCL 6815)
- Automatic locking of vehicle as of a speed of approx. 40 km/h (basic code 6817 6827
+ 32) (with SCL 6821) (with SCL 6831)

1) Vehicles designed for right-hand drive

Composition of the code for vehicles up to approx. CW 32.98 (two-key-remote keys)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Comfort closing/locking
permitted unless authorisedvia radio
by AUDI AG.remote con‐not+guarantee
AUDI AG does 64 or accept any liability
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not

trol with respect to the correctness of information in this document. Copyright by AUDI AG.
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
Total (Code): = 4682

Composition of the code for vehicles up to CW 18.00 (with introduction of three-key-remote keys)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Comfort closing/locking via radio remote con‐ + 64
trol
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
- Open tailgate, tailgate lock cylinder +1
Total (Code): = 4683

Composition of the code for vehicles as of CW 18.00 (three-key remote keys)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Window lifter logic, USA + 2048
- Comfort closing/locking via radio remote con‐ + 64
trol
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
- Open tailgate, tailgate lock cylinder +1
Total (Code): = 6731

48 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Composition of code for vehicles as of CW 18.01 (as of software version D35)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Window lifter logic, USA + 2048
- Alarm cycle sounder for ROW + 256
- Comfort closing/locking via radio remote con‐ + 64
trol
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
- Open
Protected tailgate,
by copyright. tailgate
Copying lock
for private cylinderpurposes, in part+or1in whole, is not
or commercial
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Total
with (Code):
respect =by6987
to the correctness of information in this document. Copyright AUDI AG.

Composition of code for vehicles registered in Great Britain as of CW 18.01 (as of software version D35)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Window lifter logic, USA + 2048
- RHD + 128
- Comfort closing/locking via radio remote con‐ + 64
trol
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
- Open tailgate, tailgate lock cylinder +1
Total (Code): = 6859

Composition of code for vehicles registered in Japan as of CW 18.01 (as of software version D35)

The standard code is the sum total of the fol‐

lowing:
- Confirming remote opening (flashes 2x) + 4096
- Confirming remote locking (flashes 1x) + 512
- Window lifter logic, USA + 2048
- RHD + 128
- Anti-theft alarm (ATW) is activated +8
- Confirming ATW flashes +2
- Open tailgate, tailgate lock cylinder +1
Total (Code): = 6795

4.16 - Reading measured value block

Note:
The function "Read measured value block" can be used to determine the current status of the system.
Performing function "08 - Read measured value block"

-> Indicated on display:

4.15 - Coding table as of CW 18.01 for vehicles with Japanese registration (with introduction

of software version D35) 49

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Rapid data transfer HELP

Select function XX

- Press keys -0- and -8-.

-> Indicated on display:

Rapid data transfer Q
08 - Read measured value block

- Confirm input with Q key.

-> Indicated on display:

Reading measured value block
Enter display group number XXX

- Enter display group number 001 and confirm input with Q key.

The measured value block which has been selected will appear in standard format.

Possible causes of faults occurring in the measured value blocks and fault remedy from =>Page 34 .

Summary of display groups:

Display group no. Indicated on display

001 1 = Key switch, driver's door
2 = CL interior switch, driver's door
(LOCK/UNLOCK)
3 = Feedback signal, lock, driver's
door (lock /unlocked.)
4 = Feedback signal, lock, driver's
door (safe / not safe)
002 1 = Key switch, passenger's door
2 = Vacant measured value block
3 = Feedback signal, lock, passeng‐
er's door (lock /unlocked.)
4 = Feedback signal, lock, passeng‐
er's door (safe / not safe)
003 1 = Feedback signal, lock, rear right
(lock /unlocked.)
2 = Feedback signal, lock, rear right
(safe / not safe) Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
3 = Feedback signal, lock, rear left permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
(lock /unlocked.) with respect to the correctness of information in this document. Copyright by AUDI AG.

4 = Feedback signal, lock, rear left

(safe / not safe)
004 1 = Door contact switch, driver's
door
2 = Door contact switch, passeng‐
er's door
3 = Door contact switch, rear right
4 = Door contact switch, rear left

Display group no. Indicated on display

005 1 = Key switch, tailgate
2 = Contact switch, tailgate/boot lid
3 = Remote release, tailgate/boot
lid
4 = Soft touch function for tailgate
release

50 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Display group no. Indicated on display

006 1 = Interior light
2 = Switch-off delay terminal 15
(logic relay)
3 = Comfort opening/closing
4 = Luggage compartment light
007 1 = Position of matched remote key
2 = Remote command
3 = Matched keys in position
4 = Vacant measured value block
008 1 = Road speed signal
2 = Immobiliser
3 = Vacant measured value block
4 = Vacant measured value block
009 1 = Code
2 = Code
3 = Code
4 = Code

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
4.17 - Measured value block overview
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Measured value block 001

Read measured value block 1 ⇒ ◂ Indicated on display

disabled disabled unlocked not safe
Feedback signal, lock, driver's door
▪ safe
▪ not safe
Feedback signal, lock, driver's door
▪ locked
▪ unlocked
CL interior switch, driver's door (lock / unlock)
▪ locked
▪ unlocked
▪ disabled
Key switch, driver's door
▪ open
▪ closed
▪ disabled

Measured value block 002

Read measured value block 2 ⇒ ◂ Indicated on display

disabled unlocked not safe
Feedback signal, lock, passenger's door
▪ safe
▪ not safe
Feedback signal, lock, passenger's door
▪ locked
▪ unlocked

4.16 - Reading measured value block 51

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Vacant measured value block

Key switch, passenger's door
▪ open
▪ closed
▪ not actuated 1)

1) This readout will also appear even if the passenger door is not fitted with lock cylinder.

Measured value block 003

Read measured value block 3 ⇒ ◂ Indicated on display

unlocked not safe unlocked not safe
Feedback
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not signal, lock, rear left
▪ safe
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
▪ not safe
Feedback signal, lock, rear left
▪ locked
▪ unlocked
Feedback signal, lock, rear right
▪ safe
▪ not safe
Feedback signal, lock, rear right
▪ locked
▪ unlocked

Measured value block 004

Read measured value block 4 ⇒ ◂ Indicated on display

Door open Door open Door closed Door closed
Door contact switch, rear left
▪ Door open
▪ Door closed
Door contact switch, rear right
▪ Door open
▪ Door closed
Door contact switch, passenger's door
▪ Door open
▪ Door closed
Door contact switch, driver's door
▪ Door open
▪ Door closed

Measured value block 005

Read measured value block 5 ⇒ ◂ Indicated on display

disabled Tailgate closed open disabled

52 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Soft touch for tailgate release

▪ open
▪ not actuated 1)
Remote release tailgate/boot lid
▪ open
▪ not actuated 2)
Contact switch tailgate/boot lid
▪ Tailgate open
▪ Tailgate closed
Key switch, tailgate Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
▪ open permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
▪ closed with respect to the correctness of information in this document. Copyright by AUDI AG.
▪ disabled

1) This readout will also appear even if "soft touch" function has not been fitted.

2) This readout will also appear even if remote locking function has not been fitted.

Measured value block 006

Read measured value block 6 ⇒ ◂ Indicated on display

on Relay ON disabled off
Luggage compartment light
▪ on
▪ off
Automatic open/close function1)
▪ open
▪ closed
▪ disabled
Switch-off delay terminal 15 (logic relay) 2)
▪ Relay ON
▪ Relay OFF
Interior light
▪ on
▪ off

1) The sun roof is not actuated via the automatic open function

2) Relay on: Logic relay is activated by terminal 15 and supplies power to sunroof and window lifter logic.

Measured value block 007

Read measured value block 7 ⇒ ◂ Indicated on display

1 0100 1100
Vacant measured value block
Matched keys in position (1st/ 2nd/ 3rd/ 4th memory
position)
▪ 0: vacant (not matched)
▪ 1: assigned (matched)

4.17 - Measured value block overview 53

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Remote command (0: remote button not actuated; 1: appropriate remote button
actuated)
▪ 1st Position: open
▪ 2nd Position: close
▪ 3rd Position: Tailgate
Position of matched key
▪ 0: an unmatched key was used or the remote key was not actuated.
▪ 1,2,3,4: The number shows the memory position of the actuated, matched remote key.

Measured value block 008

Read measured value block 8 ⇒ ◂ Indicated on display

0 km/h ON
Vacant measured value block
Vacant measured value block
Immobiliser
▪ ON
▪ OFF1)
Vehicle speed signal
▪ Value

1) Key was not correctly adapted to the immobilise control electronics.

=> Electrical System; Repair group 01; Immobiliser Self-diagnosis Immobiliser Self-diagnosis

Measured value block 009 (up to software version D34)

Read measured value block 9 ⇒ ◂ Indicated on display

001 1010 0100 1011
Coding
▪ 0001: Tailgate release
▪ 0010: Confirming ATW flashes
▪ 0100: SCL active
▪ 1000: ATW active
Coding
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
▪ 0001:
permittedTail locking
unless authorisedvia speed
by AUDI AG. AUDI AG does not guarantee or accept any liability
▪ 0010: Central
with respect to thelocking
correctnessvia speed in this document. Copyright by AUDI AG.
of information
▪ 0100: Convenience function remote window lifter
▪ 1000: RHD
Coding
▪ 0001: Lighting control, Avant
▪ 0010: Confirming remote locking (flashes 1x)
▪ 0100: Confirming ATW using the horn1)
▪ 1000: Terminal 87 Door logic
Coding
▪ 001: Confirming remote opening (flashes 2x) 2)
▪ 010: can be ignored (always 0)
▪ 100: Remote CL; mech. SCL

54 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

1) No longer permissible under German law.

2) as of software version D34 confirmation also via hazard warning lamps when tailgate/boot lid unlocked
via remote.

Measured value block 009 (as of software version D35)

Read measured value block 9 ⇒ ◂ Indicated on display

001 1011 0100 1011
Coding
▪ 0001: Tailgate release
▪ 0010: Confirming ATW flashes
▪ 0100: SCL active
▪ 1000: ATW active
Coding
▪ 0001: Tail locking via speed
▪ 0010: Central locking via speed
▪ 0100: Convenience function remote window lifter
▪ 1000: RHD
Coding
▪ 0001: Alarm cycle sounder for ROW
▪ 0010: Confirming remote locking (flashes 1x)
▪ 0100: Confirming ATW using the horn1)
▪ 1000: Terminal 87 Door logic
Coding
▪ 001: Confirming remote opening (flashes 2x)
▪ 010: can be ignored (always 0)
▪ 100: Remote CL; mech. SCL

1) No longer permissible under German law.

4.18 - Matching or deleting vehicle key for radio remote control

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
The vehicle is supplied with two remote permitted
keys. unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
If new or additional ignition keys are required they must be matched/adapted to central locking control unit -
J429.

The vehicle keys must also be adapted to immobiliser control electronics.

=> Electrical System; Repair group 01; Immobiliser Self-diagnosis Immobiliser Self-diagnosis

If one of the faults 00955 to 00958 is displayed, the keys must be re-matched =>Page 56 .

Methods of matching remote keys:

◆ To match remote keys without a second key, the procedure is described further in adaption under channel
21. Matching of remote keys via adaption =>Page 57 .
◆ To match remote keys by using a second key, follow the following steps.

Matching procedure for new remote keys

- Unlock the vehicle from the outside via the driver's door lock
- Switch on the ignition (using additional key).

4.17 - Measured value block overview 55

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Check in measured value block 007 display zone 3 how many keys have already been matched =>Page
53 .

-> Indicated on display:

Read measured value block 7
⇒
0 0000 1100

Display zone 3 shows how many remote keys have been matched and in which memory positions (2x in po‐
sitions 1 and 2 in example shown).

- Lock vehicle from outside with the key to be adapted by way of the driver's lock door.
- Within 5 seconds press "unlock" key of remote key until next memory position is reached (3x in example).

Each time the button is pressed the hazard lights will flash to confirm.

- Wait 5 seconds.
- Then press "unlock" key again. This unlocks the vehicle =>key has been successfully matched.

- Switch off ignition and remove ignition key.

- Check function of new remote key.
- Check display zone 3 in measured value block 007 => Page 53 .

-> Indicated on display:

Read measured value block 7
⇒
0 0000 1110

How many remote keys have beenProtected

matched and in which memory positions is displayed in display zone 3. It
by copyright. Copying for private or commercial purposes, in part or in whole, is not
must now display a further "1" (in example: 1110).
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Notes:

◆ Make sure new keys are always matched to vacant memory positions. If use is made of occupied memory
positions (can be seen from "1") the remote key already matched for this memory position will no longer
function.
◆ A successful adaption can be determined by reading measured value block (function 08), display group
number 007 =>Page 53 .
◆ A maximum of four keys can be matched.
◆ The matching process must be completed within 30 seconds. If 30 seconds are exceeded the process must
be repeated.

Re-matching procedure for existing remote keys

Note:

This procedure must be performed after changing the batteries in remote keys, or if the fault reader displays
fault codes 00955 to 00958.

- Press key on remote key.

If vehicle is neither locked nor unlocked:

- Lock and unlock vehicle within 30 seconds by way of driver's door lock.
- Then check function of re-matched remote key.

If vehicle is still not locked or unlocked, key must be re-matched. Match radio remote control vehicle keys
=>Page 55

Deleting memory addresses

It is possible to erase memory positions, if, for example, a customer has lost a radio remote control key.

56 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Switch on the ignition using a key.

- Lock vehicle from outside with the key to be adapted by way of the driver's lock door.
- Press "open/unlock" button on radio remote control key five times at 1 second intervals.

Note:

Each time the button is pressed the hazard lights will flash to confirm.

- Switch off ignition and remove ignition key.

- Memory positions are erased; it must not be possible to unlock central locking system by pressing "remote
opening" button.
- Check display zone 3 in measured value block 007 =>Page 53 . All memory positions must now be erased
and reset to "0"
Protected (in example:
by copyright. Copying for0000).
private or commercial purposes, in part or in whole, is not
- Up to four keys
permitted can
unless now be
authorised re-matched
by AUDI AG. AUDI AGonce
does notagain.
guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

4.19 - Adaption

Preconditions:

◆ Connect fault reader V.A.G 1551

=>Page 1 .
◆ Switch the ignition on.

Performing adaption (function 10)

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -2- and -1-. (10 selects function: "Adaption").

- Confirm entry with Q key.

-> Indicated on display:

Rapid data transfer Q
10 - Adaption

- Confirm entry with Q key.

-> Indicated on display:

Adaption
Enter channel number XX

- Enter the required adaption channel.

- Confirm entry with Q key.

Note:

After adapting one of the displays or exiting a particular channel, the adaption function (function 10) must be
selected again before next adaption channel can be entered.

Matching of remote keys through adaption

- Switch on the ignition (using remote key to be matched).

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -2- and -1-. (10 selects function: "Adaption").

4.18 - Matching or deleting vehicle key for radio remote control 57

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

-> Indicated on display:

Rapid data transfer Q
10 - Adaption

- Confirm entry with Q key.

-> Indicated on display:

Adaption
Feed in channel No.

- Press keys -2- and -1-. ("channel 21" is selected.)

Note:

◆ Incorrect entries can be corrected after pressing the C-key.

- Confirm entry with Q key.

-> Indicated on display:

Channel 21 Adaption 0
Key setting

The selected channel and the memory position for the key being matched are displayed in the top line. Select
the desired memory position of key being matched using keys -1- and -3- (or on V.A.G 1552 using keys ↓ and
↑).

- The third memory position is selected in the example.

-> Indicated on display:

Channel 21 Adaption 3
Key setting

- Press remote opening/closing button

-> Indicated on display:

Channel 21 Adaption 3 Q
Key recognised

The display "setting" changes after recognising a remote command to "recognised".

- Confirm entry with Q key.

-> Indicated on display:

Channel 21 Adaption 3 Q
Store changed value?

- Confirm entry with Q key.

-> Indicated on display:

Channel 21 Adaption 3
Changed value is stored?

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
- Press ⇒ key. permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
-> Indicated on display:
Rapid data transfer HELP
Select function XX

- Press keys -0- and -6-. (06 selects the function "End output").

- Switch off ignition and remove ignition key.

58 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Check function of newly matched remote key.

Notes:

◆ A successful adaption can be determined by reading measured value block (function 08), display group
number 007 => Page 53 .
◆ Make sure new keys are always matched to vacant memory positions. If use is made of occupied memory
positions, the remote key already matched for this memory position will no longer function.
◆ A maximum of four keys can be matched.

5 - Ultrasonic interior monitor self-diagnosis

5.1 - Ultrasonic interior monitor self-diagnosis

5.2 - General notes

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
The ultrasonic interior monitor
permittedisunless
onlyauthorised
available in combination
by AUDI AG. AUDI AG doeswith the anti-theft
not guarantee alarm
or accept any liability (ATW).
with respect to the correctness of information in this document. Copyright by AUDI AG.

The addition of an ultrasonic interior monitor increases the level of protection offered by the ATW.

The interior monitor will set off the ATW alarm if an attempt is made to enter the vehicle.

The ultrasonic interior monitor consists of:

◆ Control unit for ultrasonic sensors -J347

◆ Ultrasonic sensor left for ATW -G170
◆ Ultrasonic sensor right for ATW -G171

◆ Shattered glass sensor, side window, rear left

-G183 (Avant only)
◆ Shattered glass sensor, side window, rear right
-G184 (Avant only)
◆ Switch for interior monitor -E183

Function

The ultrasonic sensors in the upper part of the left and right B-pillar trim scanning the side windows and transmit
scanning signals to the ultrasonic sensors control unit.

If the scanning signal changes, the ultrasonic sensors control unit triggers the alarm via the central locking -
J429 control unit.

The shattered glass sensors in the side windows and the conductor loop in the rear window provide outer skin
protection for the vehicle, but only on the Avant.

The control unit for the interior monitor actuates the warning lamps next to the door locking knobs. These lamps
permit additional interior monitor diagnosis.

The interior monitor switch is used to switch off the interior monitor manually when locking the vehicle, for
example when a dog is left in the car.

=> Operating instructions

The ultrasonic interior monitor features a comprehensive self-diagnosis. If malfunctions occur in system com‐
ponents, fault codes are stored in fault memory of control unit. These can then be identified using fault reader
V.A.G 1551 or vehicle systems tester V.A.G 1552.

4.19 - Adaption 59
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

5.3 - Initiating self-diagnosis of the interior monitor

Test requirements:

◆ Check fuse using current flow diagram.

◆ Connect fault reader V.A.G 1551
=>Page 1 .
◆ Anti-theft alarm not activated.

Notes:

◆ If the display remains blank, check voltage supply to V.A.G 1551 according to current flow diagram.
◆ Additional operating instructions can be called up with the fault reader HELP key.
◆ The ⇒ key is used for the continuation of the program sequence.
◆ If an incorrect entry is made, press the C key to escape.

- Switch ignition on.

- Switch on printer with the Print key (indicator lamp in key lights up).
- Press key 1 for "Rapid data transfer" mode.

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for interior monitor: 45

- Press keys -4- and -5-.

-> Indicated on display:

Rapid data transfer Q
45 - Interior monitor

- Confirm input with Q key.

-> After about 5 seconds, the following appears on the display:

4B0951173 Interior monitor D03
Code 00002 WSC 06812

- Press ⇒key.

Note:

Press HELP key to obtain a printout of available functions.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Self-diagnosis functions with respect to the correctness of information in this document. Copyright by AUDI AG.

The following functions are possible:

02 - Interrogating fault memory => 61 .

03 - Final control diagnosis => 65 .

05 - Erasing fault memory => Page 86 .

06 - End output => Page 87 .

07 - Coding control unit => Page 68 .

08 - Read measured value block => Page 71 .

60 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

10 - Adaption=> Page 72 .

5.4 - Interrogating fault memory

Note:
The displayed fault information is not constantly updated but only when initiating self-diagnosis or with function
05 "Erase fault memory".
- Switch on printer with the Print key (indicator lamp in key lights up).

Performing function 02- "Interrogating fault memory"

-> Indicated on display:
Rapid data transfer HELP
Select function XX

- Press keys -0- and -2-.

-> Indicated on display:

Rapid data transfer Q
02 - Interrogate fault memory

- Confirm input with Q key.

-> The number of faults stored appears on the display.

X fault recognised

The stored faults are displayed and printed out one after the other.

- Check printout against fault table and rectify all faults as necessary => Page 61 .

-> If the message "No fault recognised" is displayed, the program returns to its start position when pressing the
⇒key.
No fault recognised Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
-> Indicated on display:
Rapid data transfer HELP
Select function XX

If something else is displayed:

=> Fault reader operating instructions
- Erase fault memory (function 05)
=>Page 86 .
- End output (function 06) => Page 87
- Switch off ignition and detach diagnostic connector.

5.5 - Fault table for interior monitor

Notes:
◆ The following table lists all the faults, with the corresponding 5-digit code numbers, that can be recognised
by the ultrasonic sensors and printed out by the V.A.G 1551.
◆ Fault codes appear only on print-out.
◆ Before replacing a component shown as faulty, check wiring and connections to component as well as earth
connections according to current flow diagram.

5.3 - Initiating self-diagnosis of the interior monitor 61

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ After carrying out repairs activate and deactivate system once. Then interrogate fault memory again with
fault reader V.A.G 1551 and erase memory.
◆ The fault memory records all static and sporadic faults.
When a fault occurs it is immediately identified as a static fault. If fault does not occur again it is registered
as a sporadic fault. "/SP" appears on the right of the display.
◆ All faults present are set to sporadic after activation and are only stored as being static if they are still present
on completion of checking.
◆ Sporadic faults which no longer occur after 50 activation cycles are erased automatically.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01349
Alarm triggered by sensor for anti-theft alarm front - Alarm triggered following - Erase fault memory
1) attempted forced entry, via Perform functional test
the front windows, into the =>Page 72 .
interior of the vehicle or fol‐
lowing a functional test.
- False alarm.
01350
Alarm triggered by sensor for ATW rear 1) - Alarm triggered following - Erase fault memory
attempted forced entry, via Perform functional test
the rear windows, into the =>Page 72 .
interior of the vehicle or fol‐
lowing a functional test.
- False alarm.

1) Only with head air bag system option.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01377
Ultrasonic sensor 1 for ATW -G170
Short to positive - Short circuit in wiring or in con‐ - Check and, if necessary, repair wir‐
nections between ultrasonic sen‐ ing and connections according to the
sor 1 for ATW -G170 and the current flow diagram.
ultrasonic sensors control unit - => Current Flow Diagrams, Electrical
J347 Fault-finding and Fitting Locations
- Ultrasonic sensor 1 for ATW - binder
G170 defective Check and if necessary replace ul‐
trasonic sensor 1 for ATW -G170
Open circuit/short circuit to earth - Open circuit in wiring between ul‐ - Check and, if necessary, repair wir‐
trasonic sensor 1 for ATW -G170 ing and connections according to the
Protected by copyright. Copyingand the or
for private ultrasonic sensors
commercial purposes, control
in part current
or in whole, is not flow diagram.
permitted unless authorised byunit
AUDI -J347
AG. AUDI AG does not guarantee or accept any => Current Flow Diagrams, Electrical
liability
- Ultrasonic
with respect to the correctness of information insensor 1 forCopyright
this document. ATW by - AUDIFault-finding
AG. and Fitting Locations
G170 defective binder
Check and if necessary replace ul‐
trasonic sensor 1 for ATW -G170
Implausible signal - Faults on activation of ultrasonic - Perform functional test =>Page
interior monitor. 65 .

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01378
Ultrasonic sensor right for ATW -G171

62 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Short to positive - Short circuit in wiring or in con‐ - Check and, if necessary, repair
nections between ultrasonic sen‐ wiring and connections according
sor right for ATW -G171 and the to the current flow diagram.
ultrasonic sensors control unit - => Current Flow Diagrams, Electri‐
J347 cal Fault-finding and Fitting Loca‐
- Ultrasonic sensor right for ATW tions binder
-G171 defective Check and if necessary replace ul‐
trasonic sensor right for ATW -
G171
Open circuit/short circuit to earth - Open circuit in wiring between - Check and, if necessary, repair
ultrasonic sensor right for ATW - wiring and connections according
G171 and the ultrasonic sensors to the current flow diagram.
control unit -J347 => Current Flow Diagrams, Electri‐
- Ultrasonic sensor right for ATW cal Fault-finding and Fitting Loca‐
-G171 defective tions binder
Check and if necessary replace ul‐
trasonic sensor right for ATW -
G171
Implausible signal - Faults on activation of ultrasonic - Perform functional test =>Page
interior monitor. 65 .

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01379
Switch for interior monitor -E183 - Wiring defect between switch - Check and, if necessary, repair
for interior monitor -E183 and wiring and connections accord‐
the ultrasonic sensors control ing to the current flow diagram.
unit -J347 => Current Flow Diagrams,
- Switch for interior monitor - Electrical Fault-finding and Fit‐
E183 defective ting Locations binder
Short to earth 1) - Replace switch for interior
monitor -E183
=> Electrical System; Repair
group 96; Servicing switch Serv‐
icing switch
01380
Alarm triggered by sensor for ATW rear left - Alarm triggered by attempted - Erase fault memory
forced entry at rear left window Perform functional test =>Page
or following a functional test 72 .
- False alarm.
01381
Alarm triggered by sensor for ATW rear right - Alarm triggered by attempted - Erase fault memory
forced entry at rear right win‐ Perform functional test =>Page
dow or following a functional 72 .
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
test or accept any liability
permitted unless authorised by AUDI AG. AUDI AG does not guarantee
- Copyright
with respect to the correctness of information in this document. False alarm.
by AUDI AG.

1) Fault is set if earth is applied for more than 1 minute.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01382
Alarm triggered by sensor for ATW front left - Alarm triggered by attempted - Erase fault memory
forced entry at front left win‐ Perform functional test =>Page
dow or following a functional 72 .
test
- False alarm.
01383

5.5 - Fault table for interior monitor 63

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Alarm triggered by sensor for ATW front right - Alarm triggered by attempted - Erase fault memory
forced entry at front right win‐ Perform functional test =>Page
dow or following a functional 72 .
test
- False alarm.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01384 1)
Alarm via shattered glass sensor - Short or open circuit in wir‐ - Erase fault memory
(Shattered glass sensor, rear left side window - ing or connections between Fault finding according to cur‐
G183; Shattered glass sensor, rear right side win‐ shattered glass sensors and rent flow diagram
dow -G184 and conductor loop for rear window rear window heating to ul‐ => Current Flow Diagrams,
heating) trasonic sensors control unit Electrical Fault-finding and
-J347 Fitting Locations binder
- The ATW has triggered as Replace side window with
a result of an attempted open circuit on conductor loop
forced entry via one of the => General Body Assembly,
side windows or via the rear Exterior; Repair group 64; Re‐
window. moving and installing Avant
- Open circuit on conductor side window Removing and
loop in one of the two side installing Avant rear window
windows or the rear window
- False alarm.

1) Avant only

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01403 1)
Shattered glass sensors, rear - During activation of the - Erase fault memory
(Shattered glass sensor, rear left side window - ATW a short or open circuit Fault finding according to cur‐
G183; Shattered glass sensor, rear right side win‐ occurs in wiring or connec‐ rent flow diagram
dow -G184 and conductor loop for rear window tions between shattered => Current Flow Diagrams,
heating) glass sensors and rear win‐ Electrical Fault-finding and
dow heating to ultrasonic Fitting Locations binder
sensors control unit -J347 Check conductor loops in side
- During activation of the windows and replace side
ATW an open circuit occur‐ window if necessary
red on a conductor loop in => General Body Assembly,
one of the two side windows Exterior; Repair group 64; Re‐
or the rear window moving and installing Avant
side window Removing and
installing Avant rear window
65535
Control unit defective - Control unit for ultrasonic - Replace control unit for ul‐
sensors -J347 defective trasonic sensors -J347

1) Avant only

5.6 - Interrogating control unit version

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
- Press keys -0- and -1-. permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

-> Indicated on display:

Rapid data transfer Q
01 - Interrogate control unit version

- Confirm input with Q key.

-> Indicated on display:

64 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

4B0951173 Interior monitor Dxx

Code 00001 WSC 06812

Option without head airbag system

-> Indicated on display:

4B0951178A Interior monitor Dxx
Code 00101 WSC 06812

Option with head airbag system

Explanation of the display

◆ 4B0951173: Number of control unit

◆ 4B0951178A: Number of control unit
◆ Interior monitor sys: Component designation and version
◆ Dxx: Software version
◆ Code 00001: Coding => Page 68
◆ Code 00101: Coding => Page 68
◆ WSC 06812: Workshop code

5.7 - Functional test of interior monitor

- Open side window approx. 10 cm.
- Switch off ignition and remove ignition key.
- Close all doors.
- Lock vehicle thus activating anti-theft alarm and interior monitor.
- Wait 30 seconds until warning lamp in door starts to flash slowly every 2 seconds (f = 0.5 Hz).
- Move your hand through the open window and near to the sensor.
- Alarm is triggered if interior monitor is functioning properly. An entry is also made in the fault memory of the
central locking control unit (1370; Alarm from interior monitor).
- Unlock vehicle and thus deactivate alarm. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

5.8 - Final control diagnosis for vehicles without head airbag

Notes:
◆ The final control diagnosis may only be performed with the vehicle stationary and the engine not running!
◆ Any faults identified by the final control diagnosis must be traced and rectified!

Performing final control diagnosis:

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys 0 and 3 (03 selects the "Final control diagnosis" function).

-> Indicated on display:

Rapid data transfer Q
03 - Final control diagnosis

- Confirm input with Q key.

The final control diagnosis activates the following elements in sequence:

◆ Actuation of warning lamps next to door locking knob at driver's/passenger door

◆ Triggering of ATW alarm.
◆ Actuation of power supply lead to ultrasonic sensors.

5.6 - Interrogating control unit version 65

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ Actuation of clock signal lead to ultrasonic sensors.

Note:

An "ATW alarm" cannot be triggered through this final control diagnosis. To trigger an "ATW alarm" carry out
final control diagnosis via central locking control unit=> Page 65 .

Performing function "03 - final control diagnosis"

- Press keys -0- and -3-.

-> Indicated on display:

Rapid data transfer Q
03 - Final control diagnosis

- Confirm input with Q key.

-> Indicated on display:

Final control diagnosis
Warning lamp for alarm system -K95

Actuation of warning lamps next to door locking knob at driver's/passenger door

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Cause alarm to trigger

The ultrasonic sensor control unit sends an alarm signal to the central locking control unit for signal test.

- Press ⇒key.

-> Indicated onpermitted

display:
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Final control diagnosis
with respect to the correctness of information in this document. Copyright by AUDI AG.
Power supply lead

Control unit transmits constant voltage of 8 V for checking wiring =>Page 67 .

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
Clock signal lead

Control unit transmits constant voltage of 5 V for checking wiring =>Page 67 .

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
End

- Press ⇒key.

This returns testing unit to basic function mode.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

66 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Erase fault memory (function 05)

=>Page 86 .
- End output (function 06) => Page 87

Checking power supply lead

- Remove the two ultrasonic sensors.
- Detach electrical connectors.
- Perform final control diagnosis => Page 66 and select control element test "Power supply lead".

-> Indicated on display:

Final control diagnosis
Power supply lead

- Use hand-held multimeter V.A.G 1526 to measure voltage at wiring-harness connector between contact 2
(voltage supply) and contact 3 (earth).

Specified value: 8 V
- Terminate final control diagnosis.
- Re-install ultrasonic sensors.
- Erase fault memory (function 05)
=>Page 86 .
- End output (function 06) => Page 87

Checking clock signal lead

- Remove the two ultrasonic sensors.
- Detach electrical connectors.
- Perform final control diagnosis => Page 66 and select control element test "Clock signal lead".

-> Indicated on display:

Final control diagnosis
Clock signal lead

- Use hand-held multimeter V.A.G 1526 to measure voltage at wiring-harness connector between contact 1
(clock signal) and contact 3 (earth).

Specified value: 5 V
- Terminate final control diagnosis.
- Re-install ultrasonic sensors.
- Erase fault memory (function 05)
=>Page 86 .
- End output (function 06) => Page 87

5.9 - Final control diagnosis for vehicles with head airbag

The final control diagnosis activates the following elements in sequence:

◆ Triggering of ATW alarm.

Note:
An "ATW alarm" cannot be triggered through this final control diagnosis. To trigger an "ATW alarm" carry out
final control diagnosis via central locking control unit => Page 65 .
Performing function "03 - final control diagnosis"
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Press keys -0- and -3-.

-> Indicated on display:

5.8 - Final control diagnosis for vehicles without head airbag 67

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Rapid data transfer Q

03 - Final control diagnosis

- Confirm input with Q key.

-> Indicated on display:

Final control diagnosis
Cause alarm to trigger

The ultrasonic sensor control unit sends an alarm signal to the central locking control unit for signal test.

- Press ⇒key.

-> Indicated on display:

Final control diagnosis
End

- Press ⇒key.

This returns testing unit to basic function mode.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

5.10 - Encoding the control unit (vehicles without head airbag)

Notes:

◆ The control unit is pre-coded at the factory.

◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

This function permits encoding of the interior monitor asProtected

follows:by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
◆ Model: Audi A6
◆ Activation mode of ATW: static
◆ Body version: Saloon/Avant

Notes:

◆ The coding sets the universal control unit for ultrasonic sensors -J347 according to the requirements of the
particular model version and anti-theft alarm system.

68 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ The coding table only lists the coding combinations possible for the Audi A6.

Performing function "07 - Code control unit"

-> Indicated on display:
Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encoding control unit
Enter code number XXXXX (0-32000)

- Enter code number:

Code00001

00 Filler positions, no significance

0 Audi A6
0 Static activation mode
1 Saloon
2 Avant

- control unit
Code Q
Enter code number 00001 (0-32000)

-> Indicated on display:

- Confirm input with Q key.

-> Indicated on display:

4B0951173 Interior monitor D03
Code 00001 WSC 06812

- Press ⇒ key to end coding procedure.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Pressing keys -0- and -6- completes the function.

-> Indicated on display:

Rapid data transfer Q
06 - End output

- Confirm input with Q key.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

5.11 - Encoding the control unit (vehicles with head airbag)

Notes:
◆ The control unit is pre-coded at the factory.

5.10 - Encoding the control unit (vehicles without head airbag) 69

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- ConfirmProtected
input with Q key.
by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
This function with
permits encoding
respect to of ofthe
the correctness interior
information monitor
in this asCopyright
document. follows:by AUDI AG.

◆ Model: Audi A6
◆ Body version: Saloon/Avant

Notes:
◆ The coding sets the universal control unit for ultrasonic sensors -J347 according to the requirements of the
particular model version and anti-theft alarm system.
◆ The coding table only lists the coding combinations possible for the Audi A6.

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encoding control unit
Enter code number XXXXX (0-32000)

- Enter code number:

Code00101

00 Filler positions, no significance

1 Audi A6
0 Filler positions, no significance
1 Saloon
2 Avant

- control unit
Code Q
Enter code number 00001 (0-32000)

-> Indicated on display:

70 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Confirm input with Q key.

-> Indicated on display:

4B0951178A Interior monitor D03
Code 00101 WSC 06812

- Press ⇒ key to terminate coding procedure.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Pressing keys -0- and -6- completes the function.

-> Indicated on display:

Rapid data transfer Q
06 - End output

- Confirm input with Q key.

5.12 - Reading measured value block

Performing function "08 - Read measured value block"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -8-.

-> Indicated on display:

Rapid data transfer Q
08 - Read measured value block
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
- Confirm inputwith
with Q key.
respect to the correctness of information in this document. Copyright by AUDI AG.

-> Indicated on display:

Reading measured value block
Enter display group number XXX

- Enter display group number 001 and confirm input with Q key.

The measured value block which has been selected will appear in standard format. Evaluation => Page
71

5.13 - Measured value block overview

Measured value block 001 (models without head airbag system)

Reading measured value block ⇒ ◂ Indicated on display

0000 100%
Vacant measured value block
Vacant measured value block

5.11 - Encoding the control unit (vehicles with head airbag) 71

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Sensitivity of sensors 1)
▪ Display in percent 50 ... 100 %
Switch settings
▪ 1st Position: Switch for interior monitoring 2) (pressed = 1, not pressed = 0)
▪ 2nd Position: Contact switch, driver's door (driver's door open = 1, driver's door closed = 0
▪ 3rd Position: Anti-theft alarm (active = 1, not active = 0)
▪ 4th Position: Shattered glass sensors 3)(1 = shattered glass detected, 0 = windows OK)

1) see function "Adaption" => Page 72 .

2) Prerequisite: Driver's door must be open.

3) Only applicable to Avant.

Measured value block 001 (models with head airbag system)

Reading measured value block ◂ Indicated

Protected by copyright. Copying for private⇒or commercial on
purposes, in partdisplay
or in whole, is not
0001 100% permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Vacant measured value block
Vacant measured value block
Sensitivity of sensors 1)
▪ Display in percent 50 ... 100 %
Switch settings
▪ 1st Position: not used
▪ 2nd Position: not used
▪ 3rd Position: not used
▪ 4th Position: Communication wire status (1 = wire OK, 0 = wire not OK)

1) see function "Adaption" => Page 72 .

5.14 - Adaption

The adaption function makes it possible to implement and store the following modification:

◆ Setting of ultrasonic sensors can be adjusted such that they react less sensitively.

Performing adaption (function 10)

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -5-.

-> Indicated on display:

Rapid data transfer Q
10 - Adaption

- Confirm input with Q key.

-> Indicated on display:

Adaption
Feed in channel No.

72 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press keys -0- and -1-.

-> Indicated on display:

Adaption Q
Channel display 10

- Confirm input with Q key.

-> Indicated on display:

The sensitivity level of the sensors is displayed: e.g. 100 %
Channel 1 Adaption 100
Sensitivity in % (- 1 3-
L

Note:

The maximum ultrasonic sensor setting made at the factory is 100% and can be reduced to 50%.

- Press ⇒key.

-> Indicated on display:

Channel 1 Adaption 100

Enter adaption value XXXXX

- Enter sensitivity value,

e.g. 75 % = 00075

-> Indicated on display:

Channel 1 Adaption 100 Q
Enter adaption value 00075

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 75 Q
Sensitivity in % (- 1 3-L
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
-withConfirm input with Q key.
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
respect to the correctness of information in this document. Copyright by AUDI AG.

-> Indicated on display:

Channel 1 Adaption 75 Q
Store changed value?

- Confirm input with Q key.

-> Indicated on display:

Channel 1 Adaption 75
Changed value is stored

- Terminate adaption of sensitivity with the ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

- Pressing keys -0- and -6- completes the function.

-> Indicated on display:

Rapid data transfer Q
06 - End output

5.14 - Adaption 73
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Confirm input with Q key.

6 - Self-diagnosis of control unit for seat adjustment with memory function

6.1 - Self-diagnosis of control unit for seat adjustment with memory function

6.2 - General notes

Measures for remedying commonly occurring faults on particular models

=> Technical Service Handbook

The new generation of seat adjustment systems with memory function has self-diagnosis capability. The control
unit for seat adjustment with memory function incorporates a fault memory.

Any faults which occur in the monitored components/wiring are stored in the fault memory with details of the
type of fault.

If any adjustment components are replaced the new components must be adapted and a basic setting must be
initiated => Page 84 .

Self-diagnosis of control unit for seat adjustment with memory function

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

◆ Connect fault reader V.A.G 1551

=>Page 1 .
◆ Switch ignition on.

Notes:
◆ If the display remains blank, check voltage supply to V.A.G 1551 according to current flow diagram.
◆ Additional operating instructions can be called up with the fault reader HELP key.
◆ The ⇒ key is used for the continuation of the program sequence.
◆ If an incorrect entry is made, press key C to escape.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
- Switch on printer with the Print key (indicator lamp in key lights up).
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Press key 1 for "Rapid data transfer".

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for driver's seat memory system: 36

- Press keys -3- and -6-.

-> Indicated on display:

Rapid data transfer Q
36 - Driver's side seat adjustment

- Confirm input with Q key.

-> Indicated on display:

74 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Rapid data transfer HELP

Tester sends address word 36

-> If "control unit does not respond"

appears on the display: Close doors, then open and hold open. Re-initiate self-diagnosis.
Rapid data transfer HELP
No reply from control unit

-
4B0959760 Seat memoryProtectedD03
by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
-> After about 5 seconds,
withthe following
respect appears
to the correctness on thein display:
of information this document. Copyright by AUDI AG.

-
4B0959760B Seat memory R1_F 0302
Code 00001 WSC 06812

-> Or:
- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

Note:

A list of the possible functions is printed out after pressing the HELP key:

Self-diagnosis functions

The following functions are possible:

02 - Interrogating fault memory => Page 75 .

04 - Basic setting=> Page 84 .

05 - Erasing fault memory => Page 86 .

06 - End output => Page 87 .

07 - Coding control unit => Page 79 .

08 - Reading measured value block => Page 80 .

6.3 - Interrogating fault memory

Note:

The displayed fault information is not constantly updated but only when initiating self-diagnosis or with function
05 "Erase fault memory".

- Switch on printer with the Print key (indicator lamp in key lights up).

Performing function 02- "Interrogating fault memory"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -2-.

6.2 - General notes 75

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

-> Indicated on display:

Rapid data transfer Q
02 - Interrogate fault memory

- Confirm input with Q key.

-> The number of faults stored appears on the display.

X fault recognised

The stored faults are displayed and printed out one after the other.

- Check printout against fault table and rectify all faults as necessary => Page 76 .

-> If the message "No fault recognised" is displayed, the program returns to its start position when pressing the
⇒key.
No fault recognised

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

If something else is displayed:

=> Fault reader operating instructions

- Erase fault memory (function 05)

=>Page 86 .
- End output (function 06) => Page 87
- Unplug diagnostic connector.

6.4 - Fault table for control unit for seat adjustment with memory function

Notes:
◆ The following table lists all the faults that can be recognised by control unit -J136 listed in order according
to their fault code numbers. Present faults with 5-digit number fault number are printed out only with the
printer of V.A.G 1551 switched on.
◆ If a fault occurs only occasionally or if the fault memory is not erased after the fault remedy has been carried
out, the fault will appear on the display as a "sporadically occurring fault" (SP). On the right of the display
of the V.A.G 1551 a "/SP" appears and the fault light remains on.
◆ If defective components were detected also check wiring to the components for short and open circuits
according to the current flow diagram.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00668
Vehicle voltage terminal 30 - Battery discharged - Fault finding according to cur‐
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not

Signal too low with respect to the correctness-ofFaulty wiring rentAG.flow diagram
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
information in this document. Copyright by AUDI
Signal too high => Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
Charge and test battery
01191
Motors for seat adjustment - One of the seat adjustment - Fault finding according to cur‐
Short circuit motors has short circuit rent flow diagram
=> Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
01445

76 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Seat longit. adj. Sender, driver's side -G227 - Wiring damaged. - Fault finding according to cur‐
Short to earth - Open circuit rent flow diagram
Open circuit - G227 defective => Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
Replace -G227

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01446
Seat backrest adj. Sender, driver's side -G230 - Wiring damaged. - Fault finding according to current
Short to earth - Open circuit flow diagram
Open circuit - G230 defective => Current Flow Diagrams, Elec‐
Fault in basic setting - Backrest limit "forgotten" trical Fault-finding and Fitting Lo‐
cations binder
Replace -G230
Initiate basic setting => Page
84 1).
01447
Seat height adj. Sender, driver's side -G231 - Wiring damaged. - Fault finding according to current
Short to earth - Open circuit flow diagram
Open circuit - -G231 defective => Current Flow Diagrams, Elec‐
trical Fault-finding and Fitting Lo‐
cations binder
Replace -G231

1) If the fault is still present after a basic setting, the backrest limit Hall sensor must be replaced.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01448
Seat rake adj. Sender, driver's side -G232 - Wiring damaged. - Fault finding according to current flow
Short to earth - Open circuit diagram
Open circuit - G232 defective => Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Replace -G232
01449
Dr seat rake adj. -E222, backwards - Short circuit in wiring - Fault finding according to current flow
Short to positive - E222 defective diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Replace -E222
01450
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Seat rake adj., driver's side -E222, forward - Short
permitted circuit in
unless authorised wiring
by AUDI - Fault
AG. AUDI AG does finding according
not guarantee to current
or accept any liability flow
Short to positive with -respect
E222 defective
to the diagram
correctness of information in this document. Copyright by AUDI AG.
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Replace -E222

Note:

With fault codes 01445 to 01448 the message "Open circuit" may also indicate a short to positive.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01451

6.4 - Fault table for control unit for seat adjustment with memory function 77
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Swtch, f.dr.st. hght & longit.adj. -E61, up - Short circuit in wiring - Fault finding according to current
Short to positive - E61 defective flow diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations
binder
Replace -E61
01452
Switch, f.dr.st. hght & longit.adj. -E61, down - Short circuit in wiring - Fault finding according to current
Short to positive - E61 defective flow diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations
binder
Replace -E61
01453
Switch, f.dr.st. hght & longit.adj. -E61, forward - Short circuit in wiring - Fault finding according to current
Short to positive - E61 defective flow diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations
binder
Replace -E61

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01454
Switch, f.dr.st. hght & longit.adj. -E61, back - Short circuit in wiring - Fault finding according to current flow
Short to positive - E61 defective diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Replace -E61
01455
Switch for backrest adjust. - Short circuit in wiring - Fault finding according to current flow
-E96, forward - E96 defective diagram
Short to positive => Current Flow Diagrams, Electrical
Fault-finding
Protected by copyright. Copying for private or commercial and
purposes, in part or inFitting
whole, isLocations
not bind‐
er
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Replace -E96
01456
Switch for backrest adjust. - Short circuit in wiring - Fault finding according to current flow
-E96, backward - E96 defective diagram
Short to positive => Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
Replace -E96

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01457
Signal to mirror/steering column control unit - Short circuit in wiring - Fault finding according to current flow
Short to earth diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
01458
Signal from CL - Short circuit in wiring - Fault finding according to current flow
Short to positive diagram
=> Current Flow Diagrams, Electrical
Fault-finding and Fitting Locations bind‐
er
65535

78 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Control unit defective - Replace control unit for seat adjust‐

ment with memory -J136

Note:

The fault "65535 Control unit defective" cannot be erased with fault reader V.A.G 1551!

6.5 - Interrogating control unit version

- Press keys -0- and -1-.

-> Indicated on display:

Rapid data transfer Q
01 - Interrogate control unit version

- Confirm input with Q key.

-
4B0959760 Seat memory D03

-> Indicated on display:

Explanation of the display

◆ 4B0959760: Number of control unit

◆ 4B0959760 A: Number of control unit
with software version DO4 for new backrest motor
◆ Seat memory: Component designation
◆ D03: Software version of control unit

Note:

Replacement control units are supplied only with software version D04.

-
4B0959760B Seat memory R1_F 0302
Code 00001 WSC 06812

-> Or:
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Explanation of the display

◆ 4B0959760 B: Number of control unit

◆ Seat memory R1_F: Component designation of driver's seat control unit
◆ 0302: Software version of control unit
◆ Code 00001: Encoding => Page 79
◆ WSC 06812: Workshop code

- The ⇒ key is used to return to the basic function.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

6.6 - Encoding memory for driver's seat control unit

Control unit no. 4B0 959 760 B only

Notes:

◆ Control unit is not factory-coded.

6.4 - Fault table for control unit for seat adjustment with memory function 79
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encoding control unit
Enter code number XXXXX (0-32000)

- Enter coding for control unit memory via the keypad:

Code: 00001

◆ 00001: Match remote key memory by assigning to personal keys.

◆ 00003: All remote key memory functions defective.

Note:
Match remote key => Page 85

6.7 - Reading measured value block

Note:
The function "Read measured value block" can be used to determine the current status of the system.
Performing function "08 - Read measured value block"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -8-.

-> Indicated on display:

Rapid data transfer Q
08 - Reading measured value block

- Confirm input with Q key.

-> Indicated on display:

Reading measured value block
Enter display group
Protected number
by copyright. Copying forXXX
private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Enter display group number 001 and confirm input with Q key.

80 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

The measured value block which has been selected will appear in standard format. Evaluation => Page
81

6.8 - Summary of measured value blocks

Measured value block 001

Indicated on display: Display value Designation

Read measured value block 1 000 1) 1 = Personal recall buttons P1, P2, P3
1234 100 1) 2 = STOP switch, M switch and door contact
1 1) 3 = Serial interface
001 1) 4 = Assignment of keys to recall buttons

1) Example.

Table of readouts

1 2
P1: not pressed = 0, pressed = 1 STOP switch: 2) no current = 0, current = 1
P2: not pressed = 0, pressed = 1 Memory: not pressed = 0, pressed = 1
P3: not pressed = 0, pressed = 1 Door contact: not actuated = 0; actuated = 1
3 4
Serial interface: Recall button 1: unassigned = 0; assigned = 1
0 = no signal Recall button 2: unassigned = 0; assigned = 1
1 ... 4 = Key number Recall button 3: unassigned = 0; assigned = 1

Possible causes of fault and fault remedy => from page 76 .

2) If the procedure is aborted by pressing the STOP button all three digits will change to "0".

Measured value block 002

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

Indicated on display: Display value Designation

Read measured value block 2 not operated 1) 1 = condition of longitudinal seat adjustment switch
1234 32767 1) 2 = current setting for longitudinal seat adjustment
not operated 1) 3 = condition of backrest adjustment switch
32767 1) 4 = current setting for backrest adjustment

1) Example.

Table of readouts

1 2 3 4
forwards 32767 2) forwards 32767 2)
backwards backwards
not operated not operated
implausible implausible

2) Figure between 0 ... 65535, mean value: 32767

6.7 - Reading measured value block 81

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Possible causes of fault and fault remedy => from page 76 .

Measured value block 003

Indicated on display: Display value Designation

Read measured value block 3 raise 1) 1 = condition of seat height adjustment switch
1234 32767 1) 2 = current setting for seat height
not operated 1) 3 = condition of seat angle adjustment switch
32767 1) 4 = current setting for angle of seat inclination

1) Example.

Table of readouts

1 2 3 4
Raise 32767 2) Raise 32767 2)
Lower Lower
not operated not operated
implausible implausible

2) Figure between 0 ... 65535, mean value: 32767

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Possible causes of fault and fault
with remedy =>
respect to the from page
correctness 76 . in this document. Copyright by AUDI AG.
of information

Measured value block 004

Indicated on display: Display value Designation

Read measured value block 4 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment
32767 1) 3 = stored setting for seat height
32767 1) 4 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 1.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 76 .

82 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Measured value block 005

Indicated on display: Display value Designation

Read measured value block 5 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment
32767 1) 3 = stored setting for seat height
32767 1) 4 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 2.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 76 .

Measured value block 006

Indicated on display: Display value Designation

Read measured value block 6 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
32767 unless
permitted 1) authorised
3 = stored
by AUDIsetting
AG. AUDI for seatnotheight
AG does guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
32767 1) 4 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 3.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 76 .

6.8 - Summary of measured value blocks 83

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

6.9 - Basic setting of seat position at control unit

If seat components are replaced, the basic setting must be performed.

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

◆ Connect fault reader V.A.G 1551

=>Page 1 .

Procedure

- Move the backrest as far forward as possible.

- Check the existing setting in measured value block 002 => Reading measured value block 80 .

-> Display readout (example values):

Read measured value block 2
not operated 32767 forward 34231

Display zone 4 will show the existing setting (in example 34231).

- Make note of this setting.

Control unit 4B0 959 760 A

- Move the backrest back towards its normal position until the setting is 935 units less than the original value
(in example: 34231 minus 935 = 33296).

Control unit 4B0 959 760 A as of chassis no. 4BWN 131 820 and

control unit 4B0 959 760 B

- Move the backrest back towards its normal position until the setting is 835 units less than the original value
(in example: 34231 minus 835 = 33396).
- Start the basic setting.

Function "04 - Basic setting"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -4-.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
-> Indicated on display: permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Rapid data transfer Q
04 - Basic setting

- Confirm input with Q key.

-> Indicated on display:

Basic setting
Enter display group number XXX

- Press keys 0, 0 and 1.

-> Indicated on display:

84 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Basic setting Q
Enter display group number 001.

- Confirm input with Q key.

-> Indicated on display:

System in basic setting 1
Basic value learnt

- The basic setting procedure is now completed.

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Check display zone 4 in measured value block 002. The display should show the mean value (i.e. 32767).
- Check the basic setting as follows:
- Move the backrest as far backwards as possible.
- Press the "memory" button and one of the recall buttons (e.g. recall button 1).

- With the driver's door open, press the selected recall button again (e.g.: 1). The backrest moves back to the
rearmost limit stop. A certain gap will always be left between the backrest and the rear seat to ensure that
the rear passenger has enough legroom.

Matching procedure for new remote keys

To ensure that the stored positions for the seats and exterior mirrors (see Owner's Manual) will be recalled
automatically via the remote control function of the keys each key must be assigned to a separate recall button.

Each of the 3 recall buttons can be programmed to respond to one remote key.

Procedure

- Use the recall button to move the seat to the position which is to be recalled when the remote key is operated.
- Press and hold the recall button, then press the "UNLOCK" button on the remote key within 10 seconds.
- Wait for about 2 seconds, then release the recall button.
- To test the recall function press a different recall button to move the seat to a different position.
- Lock the vehicle.
- Unlock the vehicle using the remote key.

When the driver's door is opened the seat should move back to the pre-programmed position.

6.10 - Deactivating the remote key memory function using the basic setting function

In basic setting 004, all (simultaneously) memory functions for all 4 remote keys are erased.

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
=> Current Flow Diagrams,
withElectrical
respect to theFault-finding and Fitting
correctness of information Locations
in this document. binder
Copyright by AUDI AG.

◆ Connect fault reader V.A.G 1551

=>Page 1 .

Procedure

-> Indicated on display:

6.9 - Basic setting of seat position at control unit 85

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Basic setting
Enter display group number XXX

- Press keys 0, 0 and 4.

-> Indicated on display:

Basic setting Q
Enter display group number 004.

- Confirm input with Q key.

-> Indicated on display:

System in basic setting 4
Basic value learnt

- The basic setting procedure is now completed.

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Check display value 4 in measured value block 001. The display should show 0000.
- Check the function as follows:
- Lock the vehicle.
- Unlock the vehicle using the remote key.
- The driver's seat adjustment must not change when the driver's door is opened.

6.11 - Erasing fault memory

Note:
If it is not possible to erase fault memory, interrogate it once again and remedy faults.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Preconditions: permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
◆ Fault memory interrogated %
◆ All faults rectified.

After fault memory has been successfully interrogated:

Performing function 05- "Erase fault memory"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -5-.

-> Indicated on display:

Rapid data transfer Q
05 - Erase fault memory

- Confirm input with Q key.

-> Indicated on display:

Rapid data transfer
Fault memory is erased

86 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

The fault memory is now erased.

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

◆
Warning!
Fault memory has not been interrogated

-> The appearance of this message on the display indicates an error in the test sequence.

◆ data transfer
Rapid
Fault memory has not been interrogated

-> The appearance of this message on the display indicates an error in the test sequence.

Observe test sequence exactly: First interrogate fault memory, if necessary rectify faults, then erase.

Erase according to fault memory; exit output with 0; deactivate and reactivate ignition; interrogate fault memory
again.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
6.12 - End of output

Perform function "06 - Terminate output"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -6-.

-> Indicated on display:

Rapid data transfer Q
06 - End output

- Confirm input with Q key.

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

- Switch off ignition.

- Disconnect connectors for fault reader V.A.G 1551.

6.11 - Erasing fault memory 87

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

7 - Self-diagnosis of control unit for passenger's seat adjustment with memory

function
7.1 - Self-diagnosis of control unit for passenger's seat adjustment with memory function

7.2 - General notes

Measures for remedying commonly occurring faults on particular models

=> Technical Service Handbook

The new generation of seat adjustment systems with memory function has self-diagnosis capability. The control
unit for seat adjustment with memory function incorporates a fault memory.

Any faults which occur in the monitored components/wiring are stored in the fault memory with details of the
type of fault.

If any adjustment components are replaced the new components must be adapted and a basic setting must be
initiated => Page 97 .

Self-diagnosis of control unit for passenger seat adjustment with memory function

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
=> Current Flow Diagrams, Electrical Fault-finding and
with respect to the FittingofLocations
correctness binder
information in this document. Copyright by AUDI AG.

◆ Connect fault reader V.A.G 1551

=>Page 1 .

Notes:
◆ If the display remains blank, check voltage supply to V.A.G 1551 according to current flow diagram.
◆ Additional operating instructions can be called up with the fault reader HELP key.
◆ The ⇒ key is used for the continuation of the program sequence.
◆ If an incorrect entry is made, press key C to escape.

- Switch on printer with the Print key (indicator lamp in key lights up).
- Press key 1 for "Rapid data transfer".

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for passenger seat memory system: 06

- Press keys -0- and -6-.

-> Indicated on display:

Rapid data transfer Q
06 - Driver's side seat adjustment

- Confirm input with Q key.

-> Indicated on display:

Rapid data transfer HELP
Tester sends address word 06

88 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

-> If "control unit does not respond"

appears on the display: Close doors, then open and hold open. Re-initiate self-diagnosis.
Rapid data transfer HELP
No reply from control unit

-
4B0959760C Seat memory R1_BF 0302
Code 00003 WSC 06812

-> After about 5 seconds, the following appears on the display:

- Press ⇒key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

Note:

A list of the possible functions is printed out after pressing the HELP key:

Self-diagnosis functions

The following functions are possible:

02 - Interrogating fault memory => Page 75 .

04 - Basic setting=> Page 97 .

05 - Erasing fault memory => by

Protected Page 86Copying
copyright. . for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
06 - End output => Page 87 .

07 - Coding control unit => Page 93 .

08 - Reading measured value block => Page 94 .

7.3 - Interrogating fault memory

Note:

The displayed fault information is not constantly updated but only when initiating self-diagnosis or with function
05 "Erase fault memory".

- Switch on printer with the Print key (indicator lamp in key lights up).

Performing function 02- "Interrogating fault memory"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -2-.

-> Indicated on display:

Rapid data transfer Q
02 - Interrogate fault memory

- Confirm input with Q key.

-> The number of faults stored appears on the display.

7.2 - General notes 89

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

X fault recognised

The stored faults are displayed and printed out one after the other.

- Check printout against fault table and rectify all faults as necessary => Page 90 .

-> If the message "No fault recognised" is displayed, the program returns to its start position when pressing the
⇒key.
No fault recognised

-> Indicated on display:

Rapid data transfer HELP
Enter address word XX

If something else is displayed:

=> Fault reader operating instructions

- Erase fault memory (function 05)

=>Page 86 .
- End output (function 06) => Page 87
- Unplug diagnostic connector.

7.4 - Fault table for control unit for seat adjustment with memory function

Notes:

◆ The following table lists all the faults that can be recognised by control unit -J136 listed in order according
to their fault code numbers. Present faults with 5-digit number fault number are printed out only with the
printer of V.A.G 1551 switched on.
◆ If a fault occurs only occasionally or if the fault memory is not erased after the fault remedy has been carried
out, the fault will appear on the display as a "sporadically occurring fault" (SP). On the right of the display
of the V.A.G 1551 a "/SP" appears and the fault light remains on.
◆ If defective components were detected also check wiring to the components for short and open circuits
according to the current flow diagram.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

00668
Vehicle voltage terminal 30 - Battery discharged - Fault finding according to cur‐
Signal too low - Faulty wiring rent flow diagram
Signal too high => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Charge and test battery
01191
Motors for seat adjustment - One of the seat adjustment - Fault finding according to cur‐
Short circuit motors has short circuit rent flow diagram
=> Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting inLocations
Protected by copyright. Copying for private or commercial purposes, binder
part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
01719 with respect to the correctness of information in this document. Copyright by AUDI AG.

90 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Seat longit. adj. sender, passenger seat -G278 - Wiring damaged. - Fault finding according to cur‐
Short to earth - Open circuit rent flow diagram
Open circuit - G278 defective => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -G278

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01720
Seat backrest adj. sender, passenger seat -G279 - Wiring damaged. - Fault finding according to cur‐
Short to earth - Open circuit rent flow diagram
Open circuit - G279 defective => Current Flow anyDiagrams,
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept liability
Fault in basic setting - Backrest
with respect to the correctness oflimit "forgotten"
information Electrical
in this document. Fault-finding
Copyright by AUDI AG. and Fit‐
ting Locations binder
Replace -G279
Initiating basic setting
=>Page 97 1).
01721
Rear height adj. sender, passenger seat -G280 - Wiring damaged. - Fault finding according to cur‐
Short to earth - Open circuit rent flow diagram
Open circuit - G280 defective => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -G280

1) If the fault is still present after a basic setting, the backrest limit Hall sensor must be replaced.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01722
Front height adj. sender, passenger seat -G281 - Wiring damaged. - Fault finding according to cur‐
Short to earth - Open circuit rent flow diagram
Open circuit - G281 defective => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -G281
01724
Switch for longit. adj., passenger seat -E64, forwards - Short circuit in wiring - Fault finding according to cur‐
Short to positive - E64 defective rent flow diagram
=> Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E64
01725
Switch for longit. adj., passenger seat -E64, back‐ - Short circuit in wiring - Fault finding according to cur‐
wards - E64 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E64

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01726
Switch for longit. adj., passenger seat -E98, forwards - Short circuit in wiring - Fault finding according to cur‐
Short to positive - E98 defective rent flow diagram
=> Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E98

7.4 - Fault table for control unit for seat adjustment with memory function 91
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

01727
Switch for backrest adj., passenger seat -E98, back‐ - Short circuit in wiring - Fault finding according to cur‐
wards - E98 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E98
01728
Switch for rear height adjustment Passenger seat - - Short circuit in wiring - Fault finding according to cur‐
E66, up - E66 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E66

Note: Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
With fault codes 01419 to 01422 the message "Open circuit" may also indicate a short to positive.
with respect to the correctness of information in this document. Copyright by AUDI AG.

Output on printer V.A.G 1551 Possible causes of fault Fault remedy

01729
Switch for rear height adjustment Passenger seat - Short circuit in wiring - Fault finding according to cur‐
E66, down - E66 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E66
01730
Switch for front height adjustment Passenger seat - - Short circuit in wiring - Fault finding according to cur‐
E65, up - E65 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E65
01731
Switch for front height adjustment Passenger seat - - Short circuit in wiring - Fault finding according to cur‐
E65, down - E65 defective rent flow diagram
Short to positive => Current Flow Diagrams,
Electrical Fault-finding and Fit‐
ting Locations binder
Replace -E65
65535
Control unit defective - Replace control unit for seat
adjustment with memory -J136

Note:
The fault "65535 Control unit defective" cannot be erased with fault reader V.A.G 1551!

7.5 - Interrogating control unit version

- Press keys -0- and -1-.

-> Indicated on display:

Rapid data transfer Q
01- Interrogate control unit version

- Confirm input with Q key.

92 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

-
4B0959760C Seat memory R1_BF 0302
Code 00003 WSC 06812

-> Indicated on display:

Explanation of the display

◆ 4B0959760 C: Number of control unit

◆ Seat memory R1_BF: Component designation of passenger seat control unit
◆ 0302: Software version of control unit
◆ Code 00003: Coding => Page 93
◆ WSC 06812: Workshop code

- The ⇒ key is used to return to the basic function.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

7.6 - Encoding memory for passenger seat control unit

Notes:

◆ Control unit is not factory-coded.

◆ Encoding is carried out with fault reader V.A.G 1551.

If the appropriate encoding is not displayed at the V.A.G 1551 or the control unit has been replaced the encoding
of the control unit is carried out as follows:

Performing function "07 - Code control unit"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Press keys -0- and -7-.

-> Indicated on display:

Rapid data transfer Q
07 - Encoding control unit

- Confirm input with Q key.

-> Indicated on display:

Encoding control unit
Enter code number XXXXX Copying(0-32000)
Protected by copyright. for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Enter coding for control unit memory via the keypad:

Code: 00003

◆ 00003: All remote key memory functions defective.

Notes:

Only code 00003 is possible.

7.5 - Interrogating control unit version 93

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

7.7 - Reading measured value block

Note:

The function "Read measured value block" can be used to determine the current status of the system.

Performing function "08 - Read measured value block"

-> Indicated on display: Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Rapid data transfer HELP permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Select function XX with respect to the correctness of information in this document. Copyright by AUDI AG.

- Press keys -0- and -8-.

-> Indicated on display:

Rapid data transfer Q
08 -Reading measured value block

- Confirm input with Q key.

-> Indicated on display:

Reading measured value block
Enter display group number XXX

- Enter display group number 001 and confirm input with Q key.

The measured value block which has been selected will appear in standard format. Evaluation => Page
94

7.8 - Measured value block overview, passenger seat

Measured value block 001

Indicated on display: Display value Designation

Read measured value block 1 000 1) 1 = Personal recall buttons P1, P2, P3
1234 100 1) 2 = STOP switch, M switch and door contact
3 = Disregard display zone
4 = Disregard display zone

1) Example.

Table of readouts

1 2
P1: not pressed = 0, pressed = 1 STOP switch: 2) no electrical current = 0, electrical current = 1
P2: not pressed = 0, pressed = 1 Memory: not pressed = 0, pressed = 1
P3: not pressed = 0, pressed = 1 Door contact: not actuated = 0; actuated = 1

Possible causes of fault and fault remedy => from page 90 .

2) If the procedure is aborted by pressing the STOP button all three digits will change to "0".

94 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Measured value block 002

Indicated on display: Display value Designation

Read measured value block 2 not operated 1) 1 = condition of longitudinal seat adjustment switch
1234 32767 1) 2 = current setting for longitudinal seat adjustment
not operated 1) 3 = condition of backrest adjustment switch
32767 1) 4 = current setting for backrest adjustment

1) Example.

Table of readouts

1 2 3 4
forward 32767 2) forward 32767 2)
backward backward
not operated not operated
implausible implausible

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 90 .

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Measured value block 003 with respect to the correctness of information in this document. Copyright by AUDI AG.

Indicated on display: Display value Designation

Read measured value block 3 raise 1. 1 = condition of seat height adjustment switch
1234 32767 1) 2 = current setting for seat height
not operated 1) 3 = condition of seat angle adjustment switch
32767 1) 4 = current setting for angle of seat inclination

1) Example.

Table of readouts

1 2 3 4
Raise 32767 2) Raise 32767 2)
Lower Lower
not operated not operated
implausible implausible

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 90 .

Measured value block 004

Indicated on display: Display value Designation

Read measured value block 4 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment

7.8 - Measured value block overview, passenger seat 95

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Indicated on display: Display value Designation

32767 1) 3 = stored setting for seat height
32767 1) 3 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 1.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 90 .

Measured value block 005

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Indicated on display: Display value Designation
Read measured value block 5 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment
32767 1) 3 = stored setting for seat height
32767 1) 3 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 2.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0 ... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 90 .

Measured value block 006

Indicated on display: Display value Designation

Read measured value block 6 32767 1) 1 = stored setting for longitudinal seat adjustment
1234 32767 1) 2 = stored setting for backrest adjustment
32767 1) 3 = stored setting for seat height

96 01 - Self-diagnosis
 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

Indicated on display: Display value Designation

32767 1) 3 = stored setting for angle of seat inclination

1) Example.

Note:

The values shown are the settings stored for recall button 3.

Table of readouts

1 2 3 4
32767 2) 32767 2) 32767 2) 32767 2)

2) Figure between 0... 65535, mean value: 32767

Possible causes of fault and fault remedy => from page 90 .

7.9 - Basic setting of seat position at control unit

If seat components are replaced, the basic setting must be performed.

Test requirements:

◆ Voltage supply and fuses for the relevant systems OK.

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

◆ Connect fault reader V.A.G 1551

=>Page 1 .

Procedure

- Move the backrest as far forward as possible.

- Check the existing setting in measured value block 002 => Reading measured value block Page 95 .

-> Display readout (example values):

Read measured value block 2
not operated 32767 forward 34231

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Display zone
permitted 4 will
unless show
authorised by the
AUDIexisting setting
AG. AUDI AG does not(in example
guarantee 34231).
or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Make note of this setting.

Control unit 4B0 959 760 C

- Move the backrest back towards its normal position until the setting is 835 units less than the original value
(in example: 34231 minus 835 = 33396).
- Start the basic setting.

Function "04 - Basic setting"

-> Indicated on display:

Rapid data transfer HELP
Select function XX

7.8 - Measured value block overview, passenger seat 97

 Audi A6 1998 ➤
Body Self-diagnosis - Edition 08.1997

- Press keys -0- and -4-.

-> Indicated on display:

Rapid data transfer Q
04 - Basic setting

- Confirm input with Q key.

-> Indicated on display:

Basic setting
Enter display group number XXX

- Press keys 0, 0 and 1.

-> Indicated on display:

Basic setting Q
Enter display group number 001.

- Confirm input with Q key.

-> Indicated on display:

System in basic setting 1
Basic value learnt

- The basic setting procedure is now completed.

- Press ⇒-key.

-> Indicated on display:

Rapid data transfer HELP
Select function XX

- Check display zone 4 in measured value block 002. The display should show the mean value (i.e. 32767).
- Check the basic setting as follows:
- Move the backrest as far backwards as possible.
- Press the "memory" button and one of the recall buttons (e.g. recall button 1).
- With the driver's door open, press the selected recall button again (e.g.: 1). The backrest moves back to the
rearmost limit stop. A certain gap will always be left between the backrest and the rear seat to ensure that
the rear passenger has enough legroom.

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

98 01 - Self-diagnosis