Prizm L4-1600cc 1.6L DOHC VIN 6 (1990)
Vacuum Switch: Description and Operation
Vacuum Switching Valve (VSV)
The Vacuum Switch Valve (VSV) is an ECM controlled, electrically operated solenoid/valve assembly used to apply vacuum to various components in
the EFI system. VSV's are utilized in the following areas:
-
EGR System (California only).
-
ISC System.
-
A/C System.
