Electric Fuel Pump

Fuel under pressure from electric fuel pump flows through a fuel damper, fuel filter, injector fuel rail and fuel pressure regulator. Electrical power for fuel pump operation during cranking mode is provided from starter relay via the fuel pump relay and ECU.

At idle, the airflow meter measuring flap opens slightly (about 5°) which closes the fuel pump contacts and provides power to fuel pump after engine has started.

With engine stopped, no airflow is present, measuring flap closes and fuel pump contacts are opened to cut power to fuel pump. This method reduces the risk of fire, in case of a collision.