first thing to check are the fuses which are located in the fuse panel on the drivers side dash board side panel.
There are two power seat fuses, check to see if the linkage in the fuse is broken in the FR power seat fuse.
If that is not broken, checking the electrical to the motor is pretty easy. The motor is located at the front of the seat right in the middle. It has a connection you can slide off of a holder to gain more access and unplug it. After disconnecting the connector, probe the plug with the female pins and see if you get +-12v when holding the switch. If not, check for power at the switch. If you have power it is a bad motor, or the stop switch could be bad.