Trying to fix my central locking on my pre facelift wagon, it currently opens but doesn't close on the viper alarm fob - where abouts is the solenoid located?

 

There should be a control unit mounted at the base of the Passenger side A Pillar, its on a small bracket

 

 

Well changed the control unit for an allegedly known good one and still the same

The key remote works to open all the doors but but have to use the key to close - also the drivers door switch to open/close doesn't work, any ideas?