Scan Tool (ST), Connecting
All functions previously performed with the VAG 1551 or VAG 1552 can also be performed using the VAS 5051 tester via operating mode vehicle self-diagnosis. See Operating Instructions for the VAS 5051 vehicle tester.
Special tools and equipment
- VAS 5051 tester
- VAS 5051/1 or VAS 5051/3 diagnostic cable
Test requirements:
- All fuses must be OK.
- Battery voltage must be at least 11.5 volts.
- Ground (GND) connection between engine (at bell housing) and chassis (next to battery) OK.
Connect VAS5051
- 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
Select operating mode:
- Press "Vehicle Self-Diagnosis" selection on display.
Select vehicle system:
- Press "01 - Engine Electronics" on display.
Display will indicate the control module identification and the Engine Control Module (ECM) coding, e.g.
If coding does not match vehicle equipment:
- Check control module coding, code Engine Control Module (ECM) if necessary. Programming and Relearning
Select diagnostic function:
Display shows all relevant diagnostic functions.
- Select the desired function on display.
NOTE:
The display fields in functions 04 - basic setting and 08 - Read Measuring Value Block are listed from top to bottom.