Connecting VAS 5051 Scan Tool

All functions previously performed with the VAG1551/1552 can also be performed using the new VAS5051 tester via operating mode vehicle self-diagnosis:

See Operating instructions for the VAS 5051 vehicle diagnostic, testing and information system.

Special tools and equipment





- VAS 5051 tester

Test requirements





- Fuses no. 5, 10, 13, 28, 29, 32, 34 and 43 must be OK.
- Battery voltage must be at least 11.5 volts.
- Ground (GND) connections between engine and chassis must be OK.

Work procedure
- Connect VAS5051 tester using VAS5051/1 or VAS5051/3 diagnostic cable as follows:







- Connect diagnostic cable connector to Data Link Connector (DLC).
- Depending on the desired function:
switch on ignition
or
start engine. Selectable Functions When Using VAG1551/1552 or VAS5051


NOTE:
- Display fields are listed from top to bottom in functions 04 - basic setting and 08 - read measuring value block.
- If the displays indicated in the work procedure are not indicated on display:
See Operating instructions for the VAS 5051 vehicle diagnostic, testing and information system.







Indicated on display


Select operating mode:
- Press button for "Vehicle Self-Diagnosis" on the display (arrow).







Indicated on display


Select vehicle system:
- Press "01 - Engine Electronics" on display.







Display will indicate the control module identification and the coding, e.g.:

If coding differs from vehicle version:
- Check control module coding. Refer to "Engine Control Module (ECM), Coding" Service and Repair







Indicated on display

Select diagnostic function:
At this point, all diagnostic functions are available.
- Select the desired function on display.
- See repair procedures for further steps.