why wont my 2006 Nissan path finder v6 won't crank at all on 2006 Nissan Pathfinder

I've replace my starter with a new one and nothing all you will is a cit I've tried looking for starter relay but i can't seem to find,so i took it to the shop and they told me that they have to replace a part called body valve on the tranmission witch i cant afford at all.

Asked by for the 2006 Nissan Pathfinder
could be blown fuse for starting system,start there