Connecting VAS 5051 Scan Tool

VAS 5051 tester, connecting and selecting engine control module

The VAS 5051 is a vehicle diagnostic, testing and information system.

All functions which could previously be performed with VAG 1551/1552 can also be performed with the tester VAS 5051 in the operating mode vehicle On Board Diagnostic (OBD):

Special tools, test equipment and auxiliary items







- VAS 5051 vehicle diagnosis, testing and information system
- VAS 5051/1 or VAS 5051/3B Cable

Test conditions







- All fuses must be OK
- The battery voltage must be at least 11.5 V
- Ground connection between engine and body must be OK
- All electrical accessories, e.g. lights and rear window defroster must be switched off
- If the vehicle is equipped with air conditioner, this must be switched off
- Selector lever must be in position "P"or "N" on vehicles with an automatic transmission

Work sequence
- Connect tester VAS 5051 using diagnostic cable VAS 5051/1 or VAS 5051/3B as follows:







- Push plug of diagnostic cable onto Data Link Connector (DLC).
- Depending upon desired function: switch ignition on or start engine, Table "Selectable functions". Selectable Functions When Using VAG1551/1552 or VAS5051


NOTE:
- In the functions 04 - Basic setting/08 - Read Measuring Value Block, the display zones will be listed from top to bottom.
- If the display does not indicate as described in the work sequence:


Indicated on display







Select operating mode
- Press button on display for "Vehicle On Board Diagnostic (OBD)" (arrow).







Select vehicle system
- Press button "01 - Engine electronics" on display (arrow).







On display control module identification and coding are displayed, e.g.:


NOTE: Replace control module if the control version displayed does not correspond to the vehicle.


Indicated on display







Select diagnostic function
At this point all diagnostic functions are available.
- Press desired function on display.
For further measures see repair procedures.