After looking at the engine and the diagrams from the dealer, I believe the PCV connection is indeed behind the intake manifold.
This last drawing, were it to match the actual engine (as I recall it) it would be WONDERFUL!!!
Of course, that is not the way I recall it. PLEASE tell me I am mistaken...
If you look under the hood and see that vac line as illustrated, then CAP THAT PUPPY! Otherwise, you are only polluting the issue by grasping for something other than The Truth.
Check this stuff out before you post.
Again, if I misremember, the GO FOR IT and LET US ALL KNOW!!!!