Wiring question /wiring diagram for tailgate

[Bmwe5320023.0]

Trying to fix wiring issues.
When I press the hatch button on the key or on the center console, only lower tailgate opens, not the upper.
So basically it's blocked and I can't open the upper tailgate. Because if the bottom unlocks but not the top, I can't open it.
I think it's working in reverse lol. These buttons should be opening the upper tailgate, not the lower one.

My wiring might be messed up, long story.
I'm missing a relay for the upper tailgate, and I can't for the life of me remember if I accidentally removed it, thinking it was another relay that I didn't need, or if u never had it.

With wiring as it is right now, if I ground Pin 2 on connector X1739, it unlocks the lower tailgate.


At this point I'm not sure I can untangle what's wrong with the wiring, but maybe if both upper and lower tailgates open at the same time, it'd be good enough.

So my question is simple.

What has to happen on this diagram for the latch to open? Measured voltage on all 4 pins, pin #4 has 13 volts all the time.