The fuel pump comes on for a few seconds before you crank the engine. Most likely you can hear the buzz or hum of this with the windows up and all is quiet. If you don't hear this, Check the fuses first. Sometimes this fuse also has something else connected to it. Maybe the wipers or radio. But you must check all fuses. If all fuses are good, acquire a test light and find the wires going back to the pump from the fuse box. Test the wires for power, if no power at first, hold the test light on the wire and crank the engine over while testing the wire. If the light comes on, you have power to the pump but no fuel. Replace the pump.