Let me know if this thread does not have what you're looking for:
ECU Pinouts
Edit: Hmm, that doesn't seem to have what you need.
Instead, you can probably find it here:
B13 FSM
And I've posted full scans of the FSM ECU diagrams here:
does ANYONE have a scan of the electrical foldout?
But the images might have been lost. I'll see if I can find/host them again.
Edit 2: This post (and the whole thread) might be useful:
Vehicular ECU Wiring Harness Pinouts