Read measuring value block: display group 1: Notes
NOTE:
- Display zones 1 to 4 show the actual wheel speeds (at the tire circumference) in km/h. These are calculated by ABS control module (w/EDL) -J104- on the basis of the signals received from the wheel speed sensors. If one of the display zones shows no reading, proceed as for DTC's 00283, 00285, 00287, 00290 "Speed sensor". See DIAGNOSTIC TROUBLE CODE (DTC) TABLE .
- In order to check that the speed sensor signals are correctly assigned to the four wheels, the vehicle must be raised. On vehicles with manual transmission put the gear shift in neutral. On vehicles with automatic transmission move the selector lever to position "N". Turn the relevant wheel by hand, and at the same time prevent the other driven wheels from rotating.
- When the vehicle is accelerated uniformly on a dry surface, the displayed values will increase continuously in rising whole numbers (for example, to 6km/h, 7km/h, 8 km/h...). The difference between displayed values 1 to 4 should be not be more than +/-1 km/h(error from out-of-round-wheels). If the values jump (for instance from 6km/h, 7km/h, to 12 km/h) or if the difference between the displayed values is greater than +/-1 km/h, then check the installation of the wheel speed sensors and rotors.
NOTE:
The display group numbers can be selected in sequence by pressing buttons -1- and -3- (VAG 1551 scan tool) or buttons uparrow and down arrow (VAG 1552 scan tool).
- Press button -C- in order to enter the display group number manually.
Indicated on display
- Press buttons -0-, -0- and -2-.
- Press -Q- button to confirm input.