VAG 1551 Scan Tool (ST), connecting and selecting functions

Fig 1: VAG 1551 Scan Tool With VAG 1551/3 Connected To Data Link Connector

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect VAG 1551 Scan Tool (ST) to Data Link Connector (DLC) using VAG 1551/3A adapter cable.

Indicated on display 1)

VAG - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer
2 - Blink code output

1) Operating modes 1 and 2 are displayed alternately

NOTE:

If the display remains blank, check VAG 1551 voltage supply according to wiring diagram

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

Additional operating instructions can be printed out by pressing the HELP button.
The → button is used to advance through the program sequence.
In "Rapid data transfer" operating mode 1, all vehicle control modules with OBD capability can be checked automatically using "Automatic Test Sequence" address word 00.

Switch ignition on.
Switch printer on by pressing PRINT button (indicator light in button lights up).