Fuel Pump Control Unit 5N0906093C

Image is an example only, BRAND MAY VARY

A Fuel Pump Control Unit (FPCU) in a car is an electronic component responsible for managing and regulating the flow of fuel from the fuel tank to the engine. It plays a crucial role in ensuring the proper functioning of the fuel delivery system.

One of the main tasks of the FPCU is to control the fuel pump relay. It receives signals from the car's engine control unit (ECU) and uses these inputs to determine when and how much fuel should be supplied to the engine. The FPCU activates the fuel pump relay to start the fuel pump when the engine is cranked and maintains a consistent fuel pressure while the engine is running. It also monitors the fuel pressure and adjusts the fuel pump's speed accordingly to ensure that the engine receives the correct amount of fuel at all times.

Additionally, the FPCU is equipped with various safety features to protect the fuel delivery system from potential damage. For example, it can detect low fuel pressure or a malfunctioning fuel pump and trigger a warning light on the dashboard to alert the driver. In some cases, the FPCU may also shut off the fuel pump to prevent any further damage to the engine. It acts as a crucial component for maintaining the efficient and reliable operation of the fuel system in a car.