Connecting VAG 1551 Scan Tool

Vehicle Diagnostic, Testing And Information System VAS5051 Or VAG1551, Connecting And Selecting Functions

Requirements
- Fuses for engine electronics OK
- Fuel pump relay OK
- Battery voltage at least 11 V
- Ground (GND) connection for engine and transmission OK







- Switch ignition off.
- Connect vehicle diagnostic, testing and information system VAS5051 with VAS5051/1 diagnostic cable. As an alternative, connect VAG1551 scan tool with VAG1551/3B diagnostic cable.


NOTE: The Data Link Connector (DLC) is located below the dash, to the left of the steering column.


WARNING!
- When performing a road test and checks, the vehicle diagnostic, testing and information system VAS5051 as well as the VAG1551 may be secured only on rear seat, from where it is to be operated by a second technician.
- Please follow safety precautions.


NOTE: Only the procedure for OBD VAG1551 is described below.


Indicated on display


VAG - On Board Diagnostic HELP
1 - Rapid data transfer*
2 - Blink code output*


* Appears alternately

- If no display appears, check diagnostic cables:

Depending on the function required:
- Switch ignition on.
or
Start engine, see table of available functions. Selectable Functions When Using VAG1551/1552 or VAS5051

- Switch on printer with PRINT button (indicator light in button lights up).
- Press button -1- to select "Rapid data transfer" operating mode.

Indicated on display:


Rapid data transfer HELP
Insert address word XX


- Press buttons -0- and -1- to insert "Engine electronics" address word 01.
- Press -Q- button to confirm input.


Rapid data transfer Q
01 - Engine Electronics

If the display shows one of the messages reproduced here, run through the troubleshooting procedure.


Rapid data transfer HELP
control module does not answer


Rapid data transfer HELP
Error in communication link


Rapid data transfer HELP
K wire not switching to Ground


Rapid data transfer HELP
K wire not switching to B+