Mike,I am pretty certain you won't find any wiring problems in that ECU Jumper Harness.
We have sold several that are installed and being used without issue.
We even use them here on our K20Z1 swaps.
However it can't hurt to check...
Please LMK if you find any problems.
I feel the same way, but I am going pretty far in eliminating the impossible, so, if we have read our Arthur Conan Doyle, we know what is next.
E connector re-confirmed A2 spec exactly as in the Hondata A2 diagram.
C101 confirmed. Main relay energizes fuel pump relay, O2S relay and C101 pins 9, 14 and 20.
I can't help but wonder if I am still misunderstanding signal positive and signal negative on the O2S. What would happen if they were reversed?