High Pressure Fuel Pump

The high pressure fuel pump is activated by the exhaust camshaft.

ECM controls the high pressure fuel pump control solenoid valve built into the high pressure fuel pump and adjusts the amount of discharge by changing the suction timing of the low pressure fuel.

Fig 1: Operating Description

Courtesy of NISSAN NORTH AMERICA, INC.

Fig 2: Operating Chart

Courtesy of NISSAN NORTH AMERICA, INC.