UK passat b5 1.8T petrol saloon manuf year late mid 1999 - wiring diagram

[sonouk]

Hello

I have looked on that Russian site, however none of the 1998, 1999 or 2000 wiring diagrams are correct, specifically they all put the alarm siren in the trunk and the siren is showing connecting to the ccm pin 11 of the 15 pin connector. the uk passat mentioned there is nothing connected to the ccm pin 11 of the 15 pin connector

This UK car the alarm siren is in the right of the engine compartment.
The diagnostic scan is saying the alarm is open circuit so need the wiring diagram. The alarm siren is not sounding, without the wiring no idea how to trace to ccm pin out.

Thank you in advance