Except U.S.A. And CANADA
Purpose, function
The check valve maintain the pressure in the fuel tank at constant pressure.
Construction
The check valve is installed to the side of the charcoal canister.

Mainly consists of valve, umbrella, and spring.

Operation
The valve moves in response to the difference in air pressure between the fuel tank side and the atmospheric side, thereby changing the path of airflow.
When the pressure in the fuel tank becomes negative due to fuel consumption or other factors, the path opens, drawing atmospheric air into the fuel tank.
Check Valve Removal/Installation
Emission SystemDifferential [C66 M R]
Purpose, Function
The differential absorbs the rotation speed of the inside and outside wheel
of a wheel set when the vehicle is cornering.
Construction
Operation
Driving in a straight line
Cornering
...
Pressure Control Valve [Skyactiv G 2.0]
U.S.A. And CANADA
Purpose, function
Prevents fuel tank damage by suppressing the vacuum applied to the fuel tank
while the purge solenoid valve is open.
Suppresses the vacuum applied from the charcoal canister side to the fuel
tank.
Construction
Integrated with the ...
Air Bag System Warning Alarm [Two Step Deployment Control System]
Purpose
The air bag system warning alarm notifies the driver that a malfunction occurred
in the air bag system instead of the air bag system warning light.
Function
If a malfunction occurs in the air bag system while the air bag system warning
light cannot illuminate, the a ...