Xc60 d5 2009, what is this part of the engine?

Arran

Hi all,

Haven't noticed this previously, it's obscured under a boost pipe. There's a linkage missing from my engine. Looks like maybe previous owner tried to use a bit of wire. It's right next to the timing belt cover, under the air pipe that runs across the top of the engine. In the 2nd picture, the close-up one, a little ball joint can be seen that looks like it should have a short, maybe 50 or 60mm linkage on it going towards the engine. Is that correct, and what does it do?

Thanks!

Image description

arebee

Looks like the missing part is the linkage that goes between the swirl flaps and the swirl flap actuator.