Nissan Terrano Valve/Tube Problem
 

Greeeting,
I have a question regarding a rubber tube that I don't know where is suppose to go. You can see it in the photos below:

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The engine is TERRANO 27 TDI
and here is some other information about the car.

VIN-code: VSKTVUR20U0-532798 Model: TVPULVFR20UGC-C-DE Model Series: R20 BODY: W

Prod M/W : 0503
AREA: EUBC
GRADE: SE
TRANS:MT

Thank you very much in advance and I apologise if this was posted in the wrong sub forum.