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Home >> Pontiac >> 2000 >> Firefly 2D Hatchback, 1.3 2 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System & Component Testing >> Fuel System >> Fuel Control >> Fuel Injector
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Fuel Injector

PCM energizes fuel injector(s) sequentially when reference pulses are received from ignition system. Fuel pump pressurizes fuel injector(s) as long as engine is cranking and PCM is receiving ignition system reference pulses. To test fuel injector circuit, see appropriate FUEL INJECTOR CIRCUIT under CIRCUIT TESTS.

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