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Home >> Chevrolet >> 2010 >> Cobalt LS, 4D Sedan, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Fuel System & Emissions System) >> System Description >> VTEC >> Fuel Supply System >> PGM-FI Main Relay 1 and 2

PGM-FI Main Relay 1 and 2

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

PGM-FI main relay 1 is energized whenever the ignition switch is turned to ON (II) to supply battery voltage to the PCM, power to the injectors, and power for PGM-FI main relay 2. PGM-FI main relay 2 is energized to supply power to the fuel pump for 2 seconds when the ignition switch is turned to ON (II), and when the engine is cranking or running.

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