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Home >> Subaru >> 2005 >> Impreza WRX STI F4-2.5L DOHC Turbo >> Repair and Diagnosis >> Powertrain Management >> Fuel Delivery and Air Induction >> Description and Operation >> Control System >> Fuel Pump Control
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Fuel Pump Control

FUEL PUMP CONTROL




The ECM controls the operation of the fuel pump through the fuel pump control unit, based on signals from the crankshaft position sensor. To improve safety, a "fuel pump stop signal" is sent from the ECM to the fuel pump control unit to stop the fuel pump if the engine stalls while the ignition switch is ON.
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