Audi Workshop Service and Repair Manuals > A3 Mk1 > Running gear, Self-diagnosis | Self diagnosis, V.A.G Inspection Service | ABS, ABS/EDL and ABS/EDL/TCS ITT Mark 20 without ESP | Basic setting | Switching off longitudinal acceleration sender G251 (only vehicles with four-wheel drive)

Switching off longitudinal acceleration senderG251 (only vehicles with four-wheel drive)

Switching off longitudinal acceleration sender -G251- (only vehicles with four-wheel drive)

t	The longitudinal acceleration sender -G251- can be switched off via “display group 040” when checking the brake system of a four-wheel drive vehicle on test rollers.

t	After completion of the check, the longitudinal acceleration sender -G251- must be reactivated by switching the ignition off and back on again.

Procedure

–	Connect vehicle diagnostic, testing and information system -VAS 5051 A- → Chapter and select vehicle system “03 - Brake electronics”. When doing this the ignition must be switched on.

Indicated on -VAS 5051 A-:

–	From list -1-, select function “04 - Basic setting”.

Indicated on -VAS 5051 A-:

1 -	Enter display group

–	Use keypad -2- to enter “040” for “display group number 040” and confirm by pressing the Q key.

Indicated on -VAS 5051 A-:

A -	Basic setting

B -	Display group 40

l	The ABS warning lamp -K47- flashes.

The longitudinal acceleration sender -G251- is now deactivated.

–	Terminate function “04 - Basic setting” by pressing the ← key.

–	Select function “06 - End output” from list.

–	After completion of the check, the longitudinal acceleration sender -G251- must be reactivated by switching the ignition off and back on again.

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