I am not sure if I understand this right but if you look at the testing for F125 from Elsa it has different outputs between different pins for D, 4, 3 and 2. As it's being turned by gearbox there must be something mechanically moving in the box when moving lever between D, 4,3,2.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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