2005 Wont start!!!!!!!!!!! help!!!!!!!!

[2005superduty]

I have a 2005 4x4 f250, my edge evolution tuner pulled a crankshaft position sensor fault so I replaced it and also replaced the cam shaft position sensor. Still does not start, will crank and crank but will not start. has a p1378 unknown error fault. have been told it might be the glow plug relay and if so does anyone know where it is at and how to test it? also the other idea I have been given is the fuel injection control module, and would like to find out where this is at and how to test it. Would hate to send my truck to the shop because I have never done that but this is my first diesel and im lost at this point, any help would be greatly appreciated. reply to thread or email keithstang96@yahoo.com

[Evil Eye]

That is your Fuel Injection Control Module (FICM) and is located on your driver's side valve cover. (It's a silver rectangle with three connectors underneath.) The connectors are kind of difficult to disconnect if you have never done it and sometimes brittle due to the heat load of the engine. Here's a link below to some reading about the FICM.

LINK

[nylyon]

Just a thought, check your fuses, and the ones under the hood. Maybe low voltage on the batteries too?