Most likely that the drive cable has come out of engagement or the motor
bracket has got bent out of alignment with the rack.
All the best, Peter.
700/900/90 Register Keeper,
Volvo Owners Club (UK).
> Where do I find information on trougble-shooting the seat-back motor
> and its connection to the seat?
>
> I haer the motor working (vibrations and sound) but there's no change
> in the seat postition.