93 4Runner 3.0 auto where does this vacuum line go?

Bought this 93 3.0 runner a little bit ago and previous owner Mickey moused a lot. Had to replace all the heater hoses and core as it had been bypassed and a few other things I’ve unscrewed. But this hose/line I have no clue where it runs to. It has been capped off in a janky way. Any ideas or schematics? Please help!

Thanks!!

 

cant seem to find any throttle bodies with more than 3 vacuum lines coming off it. the motor is a 3vze right?

i attached the vacuum diagram that i use, ignore the red box i used it for another post showing the part i need to replace on mine

 

That is meant to be capped off. Don't know why. My runner was owned by my dad, who is a master tech with gnarly OCD. I'm also a tech and that is normal for these. So nothing is Mickey moused except for my air breather hose that cracked when I was doing my timing belt and I wrapped it in tape to seal it. Other than that everything under the hood is where it should be.