Fuel Pump

An electric in-tank fuel pump is controlled by ECM. Fuel pump is activated when ECM supplies ground signal to fuel pump relay. Fuel pump relay will be energized by ECM for up to 5 seconds when ignition is first turned on and during cranking. When ECM receives 180-degree signal from Camshaft Position (CMP) sensor, fuel pump relay will remain energized until 180-degree signal is no longer received.