ABS/ESP ITT Mark 20

Longitudinal acceleration sensor -G251-, deactivating

Note: Display group number 040 is required for shutting off the longitudinal acceleration sensor -G251-, e.g. for checking the brake system on a rolling dynamometer.
Switch ignition off and on again one time to re-activate the longitudinal acceleration sensor -G251-.

- Connect VAG1551 scan tool and select the control module for brake electronics with ignition switched on (address word 03).

Rapid data transfer HELP
Select function XX
Indicated on display

- Press buttons -0- and -4-. (04 selects "Initiate basic setting", function 4.)

Rapid data transfer Q
04 - Basic Setting
Indicated on display:

- Press -Q- button to confirm input.

Basic Setting HELP
Input display group number XXX
Indicated on display:

- Press buttons 0-, 4- and -0-.
- Press -Q- button to confirm input.

ABS warning light will blink.

System in Basic Setting 40
Indicated on display:

The longitudinal acceleration sensor -G251- has now been shut off.

- After completing test, re-activate the longitudinal acceleration sensor -G251- by switching ignition off and on again once.