Scan Tool Connecting and Initial Checks

VAS 5051 vehicle diagnostic, testing and information system or VAG 1551 scan tool, connecting and selecting functions

Test requirements
- Battery voltage at least 11 V
- Ground connections at engine and transmission OK
Fuses OK
- Ground (GND) connections and Ground point for transmission OK

- Check battery Ground (GND) strap and Ground strap between battery and transmission.
- Switch ignition off.


NOTE: Data Link Connector is located in driver-side footwell lower left.







- Unclip cover for Data Link Connector.
- Connect VAS 5051 tester to vehicle with VAS 5051/1 diagnostic wire. Alternately, VAG 1551 Scan Tool can also be attached using VAG 1551/3 adapter.


WARNING!
- During a road test in an airbag-equipped vehicle, the VAS 5051 tester or the VAG 1551 scan tool must always be fastened to and operated from the rear seat by a second technician.
- Always observe safety precautions.


Indicated on display


V.A.G ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer*
2 - Blink code output*


* Two operating modes are displayed alternately


NOTE: If nothing appears in display:


- Turn ignition on
- Switch printer on via the PRINT button (indicator lamp in button lights up).
- Press button 1 to select "Rapid data transfer" operating mode 1.

Indicated on display


Rapid data transfer HELP
Insert address word XX


NOTE: The address word 00 initiates the automatic test sequence, i.e. it results in a DTC check on all OBD capable systems in the vehicle via rapid data transfer.