Other Fuel System Pump problems of the 2006 Jeep Commander

We have replaced the fuel pump 3 times. This last time it still does not start. The fuel pump is getting power, we traced the power all the way back to the fuel pump and it is getting power but it is not kicking on. We have been searching for wiring diagrams to trace the lines but no avail. If we get it to run if it gets shut off we cannot get it to restart sometimes for days. We have disconnected the battery at times and it will start for a time or two but it goes back to not starting again. With the air bag, the airbag light has come on in the dash and does not go out.

On christmas I backed the Jeep out of the driveway so I could drive my truck. Bumped the curb slightly while parking and vehicle died. Started right back up so I didn't think much of it. Today my wife took the kids to school in it and ran fine. Parked for two hours and went to start and it will crank but not turn over. Fuel guage doesn't read correctly. At full it says half a tank and while you are driving it may drop to below empty with a full tank. I have been reading all the reports about the 2006 Commander and a lot of people seem to be having this starting problem. I haul my family around in it because we can't all fit in my truck but I don't feel safe in it because you never know when it's gonna cut out and die. My kids range from 1 week to 11 and I don't really want them in it. I'm thinking it a fuel pump or wiring issue. Both issues occurred in my driveway or right in front of my house.