OverviewsF Service Bulletin/Repair Instructions

SYSTEM OVERVIEWS
Guided Fault Finding »
Guided Fault Finding is a function of the VAS 5051,

which guides you step-by-step through a specific repair

procedure.
Guided Fault Finding is not available with the VAS 5052.

Vehicle Self-Diagnosis must be used.
#
When working on the Immobilizer System,

Guided Fault Finding is a very simple way to:
+ Exchange an Instrument Cluster >
#
When working on the Immobilizer System,

Guided Fault Finding is a very simple way to:
+ Exchange an Instrument Cluster

+ Replace an Engine Control Module (ECM)
”
When working on the Immobilizer System,

Guided Fault Finding is a very simple way to:
+ Exchange an Instrument Cluster

+ Replace an Engine Control Module (ECM)

+ Adapt keys to the vehicle
”
The Guided Fault Finding process stores information

in the VAS 5051 such as:
#
The Guided Fault Finding process stores information

in the VAS 5051 such as:
+ The Vehicle Identification Number (VIN) from the component.
@
The Guided Fault Finding process stores information

in the VAS 5051 such as:
+ The Vehicle Identification Number (VIN) from the component.

+ The Immobilizer Identification Number from the component.
#
After the component is replaced, The VAS 5051 will then

automatically input this information into the new component.
@
To use Guided Fault Finding:
; ting VAS 5051

+ Select Guided Fault Finding from Vehicle Diagnostic, Testing and Information System

the main VAS 5051 menu. Version - USA/CDN - V03.10 02/11/2002
e ®
To use Guided Fault Finding: ‘Guided Faut Fincing
Voxswagen vos 33 os/25/2002

Vehicle System Test Passat 1898 > only USA/Canada

+ Select Guided Fault Finding from VAS 5051 Connect ee

the main VAS 5051 menu. 10 vehicle LATO 2.8 L Motronic / 142kW
= Connect VAS 505 tester using VAS 5051/1

(of VAS 5051/3 diagnostic cable as folows.
You will be asked to provide vehicle

information, verify vehicle information,

connect the scan tool to the vehicle

and turn the ignition ON.
Connect diagnostic cable connector to Data

Link Connector (OLG)
Now switch ignition on
#
After the vehicle is connected to the

VAS 5051 scan tool, all of the control

modules will be scanned for DTCs.
It may take a few minutes to complete

this process.
Diagnostic interface trom drivetrain data-bus

‘Conv. system 10.00> door control modules (DCMS) front

‘Conv. sy8. 10.00> DCM front with ant-thett warning system
S)
After the control modules have been

scanned,
+ Select Dash Panel Insert.

This is the first step in getting you to the
Immobilizer System component

replacementiadaptation.
‘Guided Fauk Fring poranaaen Wan 29 OoaaaE

on assal 1998 > only USACCaneda,

Veniie System Test eaeeat

cor been innogaied [estas

mre LATO 2.8 L Motronic / 142kV/
‘Motronic Engine Management System

‘S-speed Automatic Transmission O1V
ABSIEDUASTVESR - Bosch £3
ABS/EDLIASR/ESP - Bosch
‘itbag - without sige airb
Aitbag - with side aitbag
Airbag - with side airbag and head-level airbag

imatronic
Diagnostic interace ro drivetrain data-bus

Conv. system 10.00> door contro! modules (DCMS) front
Con. sys. 10.00> DCM front with ant-thett warning system 5
@ w
Once this is done, select: ‘Guided Fauk Finding yes vos 33 99282002

= essa 1988 > ony USACanaca

- Goto Vohe System Test sete

. Cont units have been inerogated | Esa

- Function/Component Selection A
Airbag - with side airbag and hesd-lovel airbag

Diagnostic interface for drivetrain data-bus

Ctimatronic
Multi-function steering whee!
‘Automatic vertical headlight aim contro!

Radio premum
Radio Promium 6
Funcion/ComporenSaecton
@
Alist of Immobilizer System options will

be displayed.
+ Select:

- Body

- Electrical equipment
- 01 - On Board Diagnostic (OBD)

capable systems
- Immobilizer
~ Functions
‘Guided Fault Fndng WVoxswagen Vos. 39 on2s/2002

Funct | Component Stecton | Passat {988 > only USACanada
‘Select functon or component esate

[AT 2.8L Motronic / 142 KW.
‘Body (Repair Group OF; 27; 50 10.97)

al equipment
‘On Board Diagnostic (OBD) capable systems
Immobilizer
‘Adaplation for replacement of Engine Control Module (ECM)

‘Adaptation of ignition keys
Procedure when ignition kay has been lost
A
A]
Alist of Immobilizer System options will

be displayed.
These options will lead you step-by-step

through the process, automatically

remembering important information to

pass on to the new component.
‘Guided Fauk Finding person, von gy cazezo0e

Fanchon Component Soecton——] Passat 1998 > only USAIGaneda

= Sener 2072 (2)
-Asagting inition keys Estate
‘Ads

Mod

= Adapting ignition keys
ATO 2.81 Motronic /142 KW.
‘Next, you will be guided through the functions

i anti-theft immobilizer to Engine Control

cM)

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Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

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