Vehicle diagnostic, testing and information system VAS5051, connecting and select functions

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Test requirements

Fuses for engine electronics OK

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

Battery voltage at least 12.7 V
Ground connections on engine and transmission OK.

Procedure

Switch ignition off.

Fig 1: Identifying Vehicle Diagnosis, Testing and Information System VAS 5051 and Data Link Connector (DLC)

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Connect up vehicle diagnostic, testing and information system VAS5051 with diagnostic wire VAS5051/1.

WARNING:

Note the safety precautions. Refer to Safety precautions

NOTE: A DTC message appears on the display:

Refer to Operating instructions of vehicle diagnostic, testing and information system VAS5051

Fig 2: Diagnostic System VAS 5051: Display

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Display on VAS5051:

Press "vehicle self-diagnosis" button.

Fig 3: Diagnostic System VAS 5051: Display

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Display on VAS5051:

NOTE: The automatic test sequence is carried out by pressing "00 - Check Diagnostic Trouble Code (DTC) memory - Total system" in selection -1-, i.e. the DTC memories of all vehicle systems with On Board Diagnostic (OBD) capability are checked.

Fig 4: Diagnostic System VAS 5051: Display

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Display on VAS5051:

Depending on which function is required "Diagnostic functions" table: Refer to Vehicle diagnostic, testing and information system VAS5051, connecting and select functions :

Switch ignition on.

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

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

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Display on VAS5051:

1 - Control module identification of engine control module. Refer to Vehicle diagnostic, testing and information system VAS5051, connecting and select functions

2 - Control module identification of immobilizer. Refer to Vehicle diagnostic, testing and information system VAS5051, connecting and select functions

Control module identification Engine control module (example)
01 - Engine electronics	Vehicle system
8E0909559..	Part-No.; assignment
3.0 liter 1) V6/5 V 2) G 3) 0003 4)	1) 2) 3) 4)	Engine capacity Engine, 6-cylinder/5-valve) G = cruise control system activated No display = no cruise control system or cruise control system not activated Control module data status (software type)
Code 16751:	Code of control module (check. Refer to Control module, coding )
Dealership No. 12345	Workshop code of VAS5051 with which coding was last performed

Control module identification, immobilizer (example)
WAUXXX8EX2A054321 1) AUZ7Z0X1137197 2)	1) 2)	17-digit vehicle identification no. (VIN) 14-digit ident no. for immobilizer

Press Δ button.

Fig 6: Diagnostic System VAS 5051: Display

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Display on VAS5051:

1 - Selection of diagnostic functions:

Diagnostic functions		Ignition on, Engine stopped	Engine idling	Vehicle running	Refer to
02	Checking Diagnostic Trouble Code (DTC) memory	No	Yes	Yes	Refer to Diagnostic Trouble Code (DTC) memory, checking
03	Final control diagnosis	Yes	No	No	Refer to Output Diagnostic Test Mode (DTM)
04	Basic setting	No	Yes	No	Refer to Basic setting
05	Erasing DTC memory	Yes	Yes	Yes	Refer to Diagnostic Trouble Code (DTC) memory, checking
06	End of output	Yes	Yes	Yes	Refer to Ending output
07	Coding control module	Yes	No	No	Refer to Control module, coding
08	Reading measured value block	Yes	Yes	Yes	Refer to Measured value block, reading
09	Reading individual measured value	No	No	No	-
10	Adaptation	No	Yes	No	Refer to Adaptation
11	Coding II	Yes	No	No	Refer to Login procedure or coding II