Audi AAT Mass Air Flow Sensor

Hi,
Does anyone know what resistance values the potentiometer of the air mass sensor's bypass valve has on the Audi AAT (2.5L 5-cylinder TDI) as default values?
The most interesting aspects are the extreme settings, namely the check valve being almost closed and the check valve being fully open.

Regards,
Jens.

Is there a resistor here? I seem to remember it being a voltage source, not a resistor, and there's also a temperature sensor in that part.