wrenchdad and peterc529 -
I have gone through that entire MR2 project and compared it to my wiring harness, but he does not make note of the pins I have circled above.
I was able to route which connector each circled 'unknown' goes to, but I cannot completely determine its actual function.
Since no one is actually documenting them, those specific pins must really be of no important use. It's just nice to have an idea of how each and every pin communicates in the ECU.
Oh trust me, I have also etched the entire pinout in my mind. You gotta be one with the ECU....ommmmmm LOL
Thanks everyone for your help! It's members like you that make this site so awesome!