Vehicle diagnostic, testing and information system VAS 5051, connecting and selecting functions

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 Audi TT, 2005 Audi TT, 2004 Audi TT, 2003 Audi TT, and 2002 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.

Requirements for test:

Fuses for engine electronics OK.

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

Fuel pump relay OK. Testing. Refer to Fuel Pump (FP) Relay -J17-, testing and activating .
Battery voltage not less than 12.7 V
Ground connections on engine and transmission OK

Work sequence

Fig 1: Connecting VAS 5051 Tester To DLC

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect up vehicle diagnostic, testing and information system VAS 5051 with diagnostic cable VAS 5051/1.

WARNING: WARNING

Observe safety precautions. Refer to Safety precautions

NOTE: If an error message appears in the display:

Refer to Operating instructions for vehicle diagnostic, testing and information system VAS 5051

Fig 2: Diagnostic System VAS 5051: Display

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Display on VAS 5051:

Select "Vehicle self-diagnosis".

Fig 3: Diagnostic System VAS 5051: Display

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Display on VAS 5051:

NOTE: Select "00 - Check all DTC memories" in the menu -1- to start the automatic test sequence (checking of fault memories of all vehicle systems with On Board Diagnostic capability.

Fig 4: Diagnostic System VAS 5051: Display

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Display on VAS 5051:

Depending on the function required (see table of diagnosis functions. Refer to Vehicle diagnostic, testing and information system VAS 5051, connecting and selecting functions ):

Switch on ignition.

Start engine.
Select vehicle system "01 - Engine electronics" in the menu -1-.
Wait until the next display appears

Fig 5: VAS 5051 Tester Displaying Control Module Identification And Coding

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Display on VAS 5051:

1 - Control module identification of engine control module.

2 - Control module identification of immobilizer.

Control module identification of engine control module (example)
01 - Engine electronics	Vehicle system
8N0906018..	Part No.
1.8L 1) R4/5VT 2) G 3) 0003 4)	1) 2) 3) 4)	Engine capacity In-line engine, 4-cylinder/5-valve turbo G = cruise control activated No display = vehicle not equipped with cruise control, or cruise control not activated Data status (software level) of control module
Coding 17700	Control module coding (checking. Refer to Code Control Module (function 07) )
Dealership No. 12345	Dealership No. of VAS 5051 which was used to perform the last coding

Control module identification of immobilizer (example)
TRUXXX8NX11018983 1) AUZ5Z0Y9122017 2)	1) 2)	17-digit vehicle identification No. (chassis No.) of vehicle 14-digit identification No. of immobilizer

Press the Δ button.

Fig 6: Diagnostic System VAS 5051: Display

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Display on VAS 5051:

1 - Menu of diagnosis functions:

Diagnosis functions		Ignition on, engine not running	Engine idling	Vehicle being driven	Refer to
02	Check DTC memory	No	Yes	Yes	Diagnostic Trouble Code (DTC) memory, checking (function 02)
03	Output Diagnostic Test Mode	Yes	No	No	Output Diagnostic Test Mode (function 03)
04	Basic settings	Yes	Yes	Yes	Basic Setting (function 04)
05	Erase DTC memory	Yes	Yes	Yes	Diagnostic Trouble Code (DTC) memory, checking (function 02)
06	End output	Yes	Yes	Yes	End Output (function 06)
07	Code control module	Yes	No	No	Code Control Module (function 07)
08	Read data block (measured value block)	Yes	Yes	Yes	Read Measuring Value Block (data block) (function 08)
09	Read individual measuring value	No	No	No	-
10	Adaptation	No	No	No	-
11	Login procedure	No	No	No	-