LEMON Manuals: Even more car manuals for everyone
Home >> Audi >> 2004 >> A6 Base >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Brake System - On Board Diagnostic (OBD) - Abs & Esp >> ESP On Board Diagnostic (OBD) >> Read Measuring Value Block (function 08) >> Read measuring value block: display group 1 >> Notes

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; DTC'S 00000 TO 00526  .
  • 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 (e.g. 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.