Subaru IMPREZA GD 2007 Series Manual page 2198

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Diagnostic Trouble Code (DTC) Detecting Criteria
2. COMPONENT DESCRIPTION
Pressure control solenoid valve
PCV controls the fuel tank pressure to be equal to the atmospheric air pressure. Normally, the solenoid is set
to OFF. And the valve opens and closes mechanically in accordance with the pressure difference between
tank and atmospheric air, or tank and canister.
The valve is forcibly opened by setting the solenoid to ON.
(b)
(1) Solenoid
(2) Diaphragm
(1)
(3)
(2)
(3) Valve
(4) Spring
GD(STI)-131
GENERAL DESCRIPTION
(a)
(4)
(c)
(a) Atmospheric pressure
(b) Fuel tank
(c) Canister
EN-01715