Subaru LEGACY 2002 Quick Reference Index page 106

EVAPORATIVE EMISSION CONTROL SYSTEM
Emission Control (Aux. Emission Control Devices)
F: TWO-WAY VALVE
The two-way valve is located in the evaporation line between the fuel tank and the canister.
When the tank inside pressure becomes higher than the atmospheric pressure, the valve is
opened allowing fuel vapors to be introduced into the canister.
On the other hand, when the tank inside pressure becomes lower than the atmospheric pressure,
external air is taken from the canister.
A
C
(1) Valve
(1)
A: Atmospheric pressure
B: To canister
C: From fuel tank
EC-14
B
B2H4776A