The fuel pump relay is an important part of your vehicle's fuel system. It provides power to the fuel pump, which is responsible for delivering gasoline from the fuel tank to the engine. When you turn on your vehicle, the fuel pump relay sends power to the fuel pump, which turns on and begins to pump fuel. When you turn off your vehicle, the fuel pump relay turns off the power to the fuel pump, which stops pumping fuel.
The fuel pump relay is located in the engine compartment, usually near the fuel pump. It is a small, black box with several electrical connections. If your vehicle's fuel pump is not working, one possible cause could be a faulty fuel pump relay. You can check the fuel pump relay by testing the electrical connections with a multimeter.