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Home >> Daewoo >> 2000 >> Lanos SE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Symptom Diagnosis >> Fuel Pump Relay Circuit Check >> Circuit Description

Circuit Description

When ignition switch is turned ON, powertrain control module (PCM)/engine control module (ECM) will activate fuel pump relay and run in-tank fuel pump. The fuel pump will operate as long as engine is cranking or running and PCM/ECM is receiving ignition reference pulses.

If there are no reference pulses, PCM/ECM will shut off fuel pump within 2 seconds after ignition switch is turned ON.

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