ok, i went out to try to start my car today and it just cranks and cranks but then i looked at my safc and noticed that it didint have any power so i checked the power wire on my ecu with a volt meter and it dosent have any power either!! is there a fuse for the ecu somewhere or dose anybody know what could be causing this?

 

bump cause i really need somebody to help me

 

theres a 15 amp fuse in the fuse box under the hood..
im not 100% sure but a friend said something once about blowing a main relay and not getting power to his ecu- hopefully someone else can give some more info on that.