Most common cause for the motor type failing was the gears stripping the teeth or the drive dowels as shown above, they were that bad they eventually bought out a warranty kit to repair them, as the complete EGR was on back-order constantly so were lots of vehicles off-the-road.

I will find the pin outs for the motor type, think they have 5-6 wires from memory..

I will have another look if there are more detailed EGR strategy info available...