Purpose, Function
Assures safety by preventing fuel from returning to the fuel filler opening.
Construction
The non-return valve cannot be removed as it is installed inside the fuel tank.
2WD

AWD

A single valve type has been adopted for the non-return valve.

Operation
Normally, the valve is closed as shown by the dotted line in the figure. When refueling, it opens as shown by the solid line due to the force caused by the flow of fuel. When refueling is finished, the valve returns to the normal valve position by spring force.

Non Return Valve Inspection
Plug Hole Plate Removal/InstallationKnock Sensor (Ks)
Purpose/Function
Detects abnormal combustion in the cylinder as basic information for mainly
determining the ignition timing.
Detects abnormal combustion in the combustion chamber and inputs it to the
PCM as a knocking signal.
Construction
Installed on the cylinder ...
On/Off Solenoid Removal/Installation [Fw6 A EL, Fw6 Ax EL]
WARNING:
A hot transaxle and ATF can cause severe burns. Turn off the engine and wait
until they are cool.
Always wear protective eye wear when using the air compressor. If the air
compressor is used, any particles of dirt or soiling could spatter and get into
the eyes.
...
Relay And Fuse Block Removal/Installation
1. Remove the battery tray..
2. Remove the air cleaner case..
3. While pressing the relay and fuse block upper cover tab in the direction of
the arrow (1) shown in the figure, lift up the relay and fuse block upper cover
in the direction of the arrow (2) to detach the relay and fuse block up ...