Power Seats Dont Work

Both front seats do not work in my 98 Continental. The drivers seat goes forward and backwards but not up and down. THe passenger seat at one time worked perfectly, then one day it did not work at all. Any ideas?
I checked the fuses and they are fine. Chilton or Haynes does not make a book for this car so troubleshooting is much more difficult.
Please offer any suggestions.
Thank you.

Most folks go through all kinds of BS tracing these seat motor problems, and eventually find it was bad contacts in the door controls. Not to say that's the only possiblity -- just a high % of the problems.

RE: the manuals, you can still get a FSM at fordcds.com

The book for it says to check your drivers door module and your seat module...I have a similar prob on my 99.drivers seat goes up and down but not forward and backward.still havent gotten it fixed....ford quotes nearly 200 bucks for the replacement...

Where is the module in the door and on the seat? What does it say to check for? Power Im assuming, but one can never be sure.

Where are the modules located exactly? Does it say or what do they look like? Does it say to check for power or what does it say to check for?

the door module is in the door below the lock with 3 or 4 wireing harnesses connected to it and the seat module is the same but under the seat.