Description and Operation: Description

The fuel pressure sensor (FPS) is installed on top of the low pressure fuel pump and measures the pressure of the low pressure fuel line. Based on the current fuel pressure and the amount of fuel consumed, the fuel pump control module (FPCM) determines whether to activate the low pressure fuel pump. After activating the low pressure fuel pump, the FPS continues to communicate with the FPCM to measure the fuel pressure and control the supply of low pressure fuel.