FUEL PUMP CONTROL OPERATION


BHE014000140T23

Operation condition

• When the ignition switch is turned from off to on, the fuel pump relay turns on for approx. 1 s.

Note
• When the ignition switch is turned from off to on, the operation sound of the fuel pump unit can be heard, but this does not indicate an abnormality.

• During cranking (ignition switch: START), the fuel pump relay turns on for approx. 1 s.

• After the engine starts (ignition switch: ON), the fuel pump relay turns on repeatedly each time an input signal from the eccentric shaft position sensor is input. Due to this, the fuel pump relay remains on.

• When the engine stalls (ignition switch: ON) and the input signal from the eccentric shaft position sensor stops, the fuel pump relay turns on for approx. 2 s, and then turns off.