remove fuse 19 and run it without the 4x4 system. its shit and would break anyway.
The PAS system is connected to the 4x4 so u need to reroute some pipes to get the PAS to work if the 4x4 is gone.
I used to have a detailed website on the vaux 4x4 system, but t'was a while ago.
get onto migweb and have a lookie there