Climate control pin needed

No problem. I am attaching the complete wiring diagram below for your review.

Also, here is a guide that will help with this testing in case you need it:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please run through this and let me know what other questions you have.

Thanks

When plug 227 was plugged in I got no display, I cut line 15, blend door reference ccw and was able to get the display back and fan control.
What function did I lose?

Okay. If this circuit is removed, then you have a short in the wire or the blend door actuator has shorted, and it is corrupting the climate control display.

So, I would suggest replacing the actuator if nothing else is found.