Door pins staying up

[VWVW 1]

Help !

 

Iam having problems with my door pins not going down when I try and lock my car from the remote key fob.

 

Any pointers as to what to check?

 

If I sit in the car and push the door pin down manually it goes down ok. How does the door pin work. Is it controlled by a vacum pump like a mk2 golf.

 

If yes where is it located on a VR6 corrado ?

 

thanks in adavnce

[VWVW 1]

All working again :)...just tightened the door pins