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Home >> Subaru >> 2003 >> Impreza F4-2.5L SOHC >> Repair and Diagnosis >> Powertrain Management >> Fuel Delivery and Air Induction >> Fuel Pump >> Description and Operation >> Fuel Pump Control

Fuel Pump Control

FUEL PUMP CONTROL




Using the signal from the crankshaft position sensor, the ECM controls operation of the fuel pump by turning its relay ON or OFF. To improve safety, the fuel pump is stopped if the engine stalls with the ignition switch ON.