The out put shaft sensor signal is basically a rotation speed signal,RPM if you like,
this is compared to the input shaft or engine speed signal,
and if they don't match to parameters then I'd be suspecting one or more of the internal clutch's slipping from worn plates or low fluid pressure.
Not going to be a cheap or quick fix.
And if your like me there's very few automatic gearbox specialists around,
There is only one that I could say is local to me,
so when this kind of fault crops up and needs advanced diagnosis you have to visit a specialist.
Best I can give is google for a specialist auto trany' repair shop near to you.
Answered Dec 13, 2014 (7 years ago)