FUEL PUMP CONTROL OUTLINE


BHE014000140T21

• When the eccentric shaft position sensor signal is input to the PCM, the fuel pump relay turns on and the fuel pump operates.

• When input from the eccentric shaft position sensor signal stops, the fuel pump relay turns off and the fuel pump turns off.

• For improved startability when the ignition switch is turned from off to on, the fuel pump is operated for several seconds. Due to this, fuel pressure increases rapidly for improved startability.