The diagram shows a green/yellow wire, orange, white, orange wires.
If they're that order in the plug, the first orange pme comes from pin 38 & 47 on the ECCS, (the wires from those 2pins combine and go to the CAS, ECCS relay and AFM) and the 2nd one goes straight to pin16 on the ECCS.
Not sure what they do tho, wouldn't want to guess the wrong info and cause you problems
Don't know if you can make any use of this link.
http://www.zeroyon.com/pics/installs/inectorsMAF/550Z32-2.html