Scan tool, connecting

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All functions, which were previously performed with the V.A.G 1551 or V.A.G 1552, can also be performed with the new Scan Tool VAS 5051 in the operating mode -vehicle On Board Diagnostic (OBD).

Check prerequisites:

All fuses according to wiring diagram OK.
Battery voltage at least 9 V.

Fig 1: Connecting V.A.G 1551 Scan Tool With V.A.G 1551/3 Cable

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect V.A.G 1551 Scan tool with V.A.G 1551/3 cable.

Indicated on display:

V.A.G 1551 -GB/7.0- 1.01.1997

Display will show the actual software version installed (will be shown briefly in display)

NOTE:

If the display remains blank, check V.A.G 1551 voltage supply

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

Additional operating instructions can be obtained by pressing the V.A.G 1551 Scan Tool (ST) HELP button.
The → button is used to advance through the program sequence.
The PRINT button is used for switching on the printer (warning lamp in button lights up).

and then the following appears in the display:

Indicated on display:

Rapid data transfer HELP
Enter address word XX

NOTE: With the address word 00 the automatic test sequence is carried out, i.e. the DTC memories of all systems in the vehicle capable of On Board Diagnostic (OBD) are checked via the rapid data transfer.