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Home >> Cadillac >> 1988 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> DFI Theory/Operation >> Operation >> ECM Output Controlled Systems >> Fuel Pump Relay

Fuel Pump Relay

The ECM will turn the fuel pump relay on for 2 seconds when the ignition switch is turned to the "RUN" position. If the engine is not cranked within 2 seconds the ECM will shut the fuel pump off. The fuel pump will be reactivated when the key is turned to the "START" position.