Seat Arosa 1.4 16V vacuum problem?

Moin, I have written here something to my seat arosa (1,4 16v 100 hp AQQ bj 2000) When the car is warm it goes out immediately in the empty run.. I mean to have located the problem now but urgently need help. The underpressure system of the car is not right at the front and at the back (pressure converter for abgsd regulation goes just both to the I say abgeschworung) in the end the previous owner has connected all the ones he has found. a hose behind the spray wall and in the original wire harness just under the control unit the hose does not go to the control unit?! I have been looking for hours now for a decent drawing of the u-pressure system so that I can start to bend the part again.. Can someone please help me!