Operation CHARM
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Pontiac
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2000
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Sunfire L4-2.2L VIN 4
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Description and Operation
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Fuel Metering
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Fuel Metering Modes
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General Description
General Description
The
PCM
uses voltage inputs from several sensors to determine how much fuel to give the engine. The fuel is delivered under one of several conditions called modes. All modes are controlled by the PCM.