I'm not familiar with 2.3 turbo's or emissions systems. But....
It's hard to tell colors properly from photos, but it looks to me that the one plug on the right in the first pic has a yel/red and a black/wh. That seems to correspond to the knock sensor in your second diagram. The other plug is a little less clear as a stripe might not be showing. It kind of looks like there is a one way vacuum valve connected in there somehow, that is the blue piece with a hose on both ends. the plug looks like one red and one yellow wire, which would indicate egr solenoid according to your diagram. All this info I gathered by looking at the info that you provided. Perhaps you could look a little closer at your own info for answers. You might also be looking for confirmation for your own observations, and in that case it would sound better if you say that up front.
I know what it's like to be in the middle of a job and want answers right away, but that's not how it works most times.
Not everybody is on 24/7, give them a chance to see your posts. I realize that it's hard not to believe that someone wouldn't see and answer right away, but sometimes it takes awhile for the right person to see your post, maybe even two or three days or more.
Good luck,
Richard