Air Diverter Solenoid: Description and Operation

Fig. 1 VSV Section:

STRUCTURE OF VACUUM SWITCHING VALVE (ASV)
A vacuum solenoid valve (VSV) provides a vacuum switching function for the air switching valve, in response from an electrical signal, to control a vacuum servomotor.

When the solenoid is energized, ported vacuum flows to the air switching valve causing it to open. When the solenoid is de-energized, ported vacuum is not applied to the air switching valve, causing it to close.

Fig. 2 Operating Schematic Of VSV: