2000 Ford Focus fuel pump driver module offline (P1233)

Electrical problem
2000 Ford Focus 4 cyl Front Wheel Drive Automatic

the code came out p1233 ( fuel pump driver module offline ) what exacly does this mean? The part is back ordered until july 5th 2010 and a ford dealer item, how can I test it with a meter at home to see if it is good or the wires are good. Should I replace the wires at the same time? My car will run good then with no warning just die turn the key off and it'll restart then u can drive and it'll do it all again like 20 minutes later, when it stalls it acts like it's getting no gas I put in a new fuel pump and filter 2 weaks ago plus it has a weak stream to the throttle (i think thats what he said) lol. So if the FPDM is bad or the wiring is bad ( heating up after running for a while) will the car stall like that even while driving down the road and what is the FPDM purpose? Please help I appreciate it very much.