On Board Diagnostic (OBD) Program

On Board Diagnostic (OBD) with V.A.G 1551 Scan Tool or Tester VAS 5051 (flow chart)

ABS ITT Mk 20 IE On Board Diagnostic (OBD) program
All functions which could previously be performed with V.A.G 1551 can also be performed with the new tester VAS 5051.

Special tools and equipment





- V.A.G 1551 Scan Tool or V.A.G 1552 vehicle system tester.





- V.A.G 1551/3 or 1551/3A Adapter cable

Test requirements
- The tires installed to all wheels must be of the same (approved) size; tires inflated to prescribed pressure.
- Mechanical/hydraulic parts of the brake system including brake light switch and brake lights OK.
- Hydraulic lines and connections not leaking (visual check of hydraulic unit, brake calipers, wheel cylinders, tandem master brake cylinder).
- Wheel bearings and wheel bearing play OK.
- ABS control module (w/EDL) -J104- is correctly bolted to hydraulic unit -N55-.
- Connector on ABS control module (w/EDL) -J104- correctly plugged-in (retainer is engaged).
- Check contacts of ABS components for damage and correct seating.
- All fuses OK according to wiring diagram (remove fuse from fuse holder to check).
- Supply voltage OK (at least 10.0 V).