Audi Workshop Service and Repair Manuals > A3 Mk1 > Power unit | Simos injection and ignition system (4-cylinder) | Mixture preparation system, electronic inj.,Gas | Checking auxiliary signals | Checking vehicle speed signal | Special tools and workshop equipment required

Special tools and workshop equipment required

t	-V.A.G 1526 A-

t	-V.A.G 1527 B-

t	-V.A.G 1594 A-

t	-V.A.G 1598/31-

t	-VAS 5051- with -VAS 5051/1-

t	-V.A.G 1551- with -V.A.G 1551/3 A-

Note!

t	The vehicle speed signal is generated by the vehicle speed sender -G68- (on the gearbox) and is processed in the dash panel insert.

t	The processed signal goes to contact 9 on the engine control unit and is used for idling speed stabilisation and for the damping of load change jolts when changing gear.

Note!

Audi Workshop Service and Repair Manuals