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 SystemShift Solenoid No.3 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
Shift solenoid No.3 adjusts the hydraulic pressure in the R-3-5 brake circuit
based on the current demand from the TCM according to the vehicle conditions.
Construction
Shift solenoid No.3 is installed to the solenoid control valve body.
Shift solenoid ...
Initial Learning [Fw6 A EL, Fw6 Ax EL]
Introduction
If the control valve body and oil pressure switch are replaced, always perform
the initial learning. If the initial learning is not completed, engine rev-up
may occur or shift shock may increase. DTC P06B8:00 is displayed while the initial
learning has not been implement ...
Fresh Air Duct
Purpose, Function
Conducts fresh air from outside the engine compartment.
Increases air density by taking fresh air, which is cooler than the engine
compartment, to enhance the charging efficiency, ensuring the combustion stability.
Construction
The fresh-air duct is i ...