Volkswagen Audi Vehicle Communication Software Manual

Using This Manual

This chapter provides an overview of the conventions used in this manual. The remainder of
this guide is divided into the following chapters:
• “Chapter 2 Introduction” describes the subject of this manual.
• “Chapter 3 Operations” offers general software operating explanations and procedures.
• “Chapter 4 Expert Mode” offers general operating explanations and procedures for using
Expert Mode.
• “Chapter 5 Testing” offers testing information and procedures for various Volkswagen and
Audi control systems.
• “Chapter 6 Data Parameters” provides data parameter definitions.
• “Appendix A Terms and Acronyms” lists terms and abbreviations used in this manual.
• “Appendix B Troubleshooting” offers advice for troubleshooting scan tool-to-vehicle
communication and other issues.
• “Appendix C Fuel Control Learning/Adaptation Values” provides information regarding the
type of fuel control used by VW/Audi ECMs.
Conventions
This manual uses the conventions described below.
1.0.1 Bold Text
Bold text is used for emphasis and to highlight selectable items such as buttons and menu
options.
Example:
Press the Y button.
1.0.2 Terminology
Certain terms are used to command specific actions throughout this manual. Those terms are
described below.
Select
The term “select” will be used to mean selecting a menu item or other option with the
Thumbwheel (Scanner™)

Table of Contents
Safety Information………………………………………………………………………………………………..vii
Safety Conventions…………………………………………………………………………………………………vii
Important Safety Instructions…………………………………………………………………………………..viii
Chapter 1: Using This Manual…………………………………………………………………………………1
Conventions……………………………………………………………………………………………………………1
Bold Text…………………………………………………………………………………………………………..1
Terminology………………………………………………………………………………………………………1
Notes and Important Messages……………………………………………………………………………2
Chapter 2: Introduction………………………………………………………………………………………….3
Chapter 3: Operations……………………………………………………………………………………………5
Identifying the Vehicle………………………………………………………………………………………………5
Engine ID Codes……………………………………………………………………………………………….6
Vehicle Identification………………………………………………………………………………………….11
Connecting to a Vehicle………………………………………………………………………………………….13
Selecting a System………………………………………………………………………………………………..16
Demonstration Programs………………………………………………………………………………………..19
Chapter 4: Expert Mode………………………………………………………………………………………..21
Using Expert Mode……………………………………………………………………………………………….. 21
Initiating Expert Mode……………………………………………………………………………………….22
Selecting a System…………………………………………………………………………………………..23
Expert Mode Function Selection Menu………………………………………………………………..25
Testing in Expert Mode…………………………………………………………………………………………..34
Chapter 5: Testing………………………………………………………………………………………………..35
VW/Audi Software Application List……………………………………………………………………………35
Testing Engine Systems………………………………………………………………………………………….37
VW/Audi Application Coverage………………………………………………………………………….37
Clearing Codes………………………………………………………………………………………………..45
Data……………………………………………………………………………………………………………….47
Functional Tests……………………………………………………………………………………………….50
Testing Transmission Systems…………………………………………………………………………………63
Digimat Control Module Identification—Golf & Jetta, 1993–97……………………………….69
4-Speed Automatic Transmission—01N………………………………………………………………71
VW Series—095, 096, 01M……………………………………………………………………………….71
Audi Transmission—01F, 01K……………………………………………………………………………72
Important Tips for Transmission Codes……………………………………………………………….72
Transmission Basic Settings………………………………………………………………………………73
Functional Tests—VW Passat 01V……………………………………………………………………..75
VW/Audi Transmission Emergency Operation—01V…………………………………………….77
Testing Electronic Throttle Systems………………………………………………………………………….77
Throttle Valve Control Module Adaptation……………………………………………………………7
Electronic Throttle Types…………………………………………………………………………………..79
ting ABS Systems……………………………………………………………………………………………..83
ABS Basic Settings…………………………………………………………………………………………..85
ting Immobilizer Systems……………………………………………………………………………………86
Important Tips for Testing Immobilizer III Systems…………………………………………………87
Audi Immobilizers……………………………………………………………………………………………..87
Immobilizer Adaptation Procedures…………………………………………………………………….87
Radio Frequency Remote Control Functions………………………………………………………..92
Immobilizer Frequently Asked Questions……………………………………………………………..93
ting Electronic Instrument Panel Systems…………………………………………………………….95
Electronic Instrument Panel Types………………………………………………………………………95
ting Airbag (SRS) Systems……………………………………………………………………………….100
ting CAN Data Bus Systems……………………………………………………………………………..101
Sources of Interference……………………………………………………………………………………102
Powertrain CAN Bus……………………………………………………………………………………….102
CAN Data Bus in the Convenience System………………………………………………………..103
apter 6: Data Parameters………………………………………………………………………………..105
habetical Parameter List……………………………………………………………………………………106
s Engine Parameters………………………………………………………………………………………..118
sel Engine Parameters……………………………………………………………………………………..149
nsmission Parameters………………………………………………………………………………………152
nsmission Expert Mode Parameters…………………………………………………………………..159
S Parameters…………………………………………………………………………………………………..161
pendix A: Terms and Acronyms………………………………………………………………………163
ms………………………………………………………………………………………………………………….163
onyms…………………………………………………………………………………………………………….163
pendix B: Troubleshooting……………………………………………………………………………..167
mmunication Problems……………………………………………………………………………………..167
Aftermarket Radio Problem……………………………………………………………………………..167
The Problem………………………………………………………………………………………………….167
Testing for this Problem…………………………………………………………………………………..168
pendix C: Fuel Control Learning/Adaptation Values…………………………………………171
g-Term Fuel Control…………………………………………………………………………………………171
Additive Adaptation…………………………………………………………………………………………171
Multiplicative Adaptation………………………………………………………………………………….172
Examples of Display Groups for Long Term FT Adaptive Value…………………………….172
Important Tips for Long Term Fuel Control………………………………………………………….174
rt-Term Fuel Control………………………………………………………………………………………..174
Examples Short Term FT O2 Regulation……………………………………………………………174
Important Tips for Short-Term Fuel Control…………………………………………………………176
gen Sensor Voltage…………………………………………………………………………………………176
y Vehicle Oxygen Sensor Reading…………………………………………………………………….177
Example: Motronic 2.9 (1993–1995)………………………………………………………………….177
e Model Oxygen Sensor Reading……………………………………………………………………….177
Oxygen Sensor Aging Test………………………………………………………………………………178
Oxygen Sensor Control-Dwell Time Test……………………………………………………………179

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