1kz vaccum solenoid

[876 Cruisers]

The vacuum sensor on the back of the 1kz-t turbo intake. Anyone know what purpose it serves? It was disconnected for a while and the electrician had to rewire it and connect it back. He thinks it's for the a/c for when it comes on but it doesn't seem to be for that purpose. If anyone has any idea what its for would be great.

Pn 90910-12126

Thanks
Dan

 

[roscoFJ73]

It looks like the vacuum solenoid that raises the rpms when the aircon comes on but they are used for other things.

I think this is it and its to do with emissions, opening and closing to mix crank gases with air in the intake. The cartoon is for a 90 series prado