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1.3 - Connecting vehicle diagnostic, testing and information system VAS 5051 or fault reader
V.A.G 1551 and selecting functions
Test conditions
• Fuses for engine electronics OK
• Fuel pump relay OK
• Battery voltage at least 11 V
• Earth connections on engine and gearbox OK.
- Switch ignition off.
- -> Connect vehicle diagnostic, testing and information system VAS 5051 with diagnosis cable VAS 5051/1.
As an alternative, connect fault reader V.A.G 1551 with diagnosis cable V.A.G 1551/3.
Warning!
◆ When performing test-drives and checks, the vehicle diagnostic, testing and information system VAS 5051
as well as the fault reader V.A.G. 1551 may be secured only on rear seat, from where it is to be operated.
◆ Please follow safety precautions => Page
Note:
The following description only covers the procedure for performing self-diagnosis with fault reader V.A.G 1551.
If using vehicle diagnostic, testing and information system VAS 5051, follow the operating instructions supplied
with the equipment.
-> Indicated on display:
V.A.G - SELF DIAGNOSIS HELP
1 - Rapid data transfer*
2 - Flash code output*
* Appears alternately
- If no display appears, check diagnostic cables:
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations binder; Fault-finding programme: "Di‐
agnostic wiring"
Audi A8 1994 ➤
Motronic injection and ignition system (6-cylinder) - Edition 02.1999
2
01 - Self-diagnosis
