Fuel Pump Speed Control
Under normal driving conditions (low engine speed or low engine load), the fuel pump ECU applies 9 volts to the fuel pump. When the engine requires more fuel, the fuel pump ECU applies 12 volts to the fuel pump.
Under normal driving conditions (low engine speed or low engine load), the fuel pump ECU applies 9 volts to the fuel pump. When the engine requires more fuel, the fuel pump ECU applies 12 volts to the fuel pump.