Originally Posted by JimVonBaden
So changing the module fixed your odometer and speedometer?
Sorry, I don't get that at all. They are not related. The usual fix for that is a rear speed sensor. This is often caused by crud on the sensor, or a damaged sensor.
On the servo bikes (and likely the later ones also), the ABS module is responsible for transmitting the speed sensor signal onto the data bus. If you look at the wiring diagram you'll see the speed sensors are connected to the ABS module. Only connection between the ABS unit and the Kombi and ZFE is the data bus.