Mustang GT V8-4.6L SOHC VIN X (1998)
Engine Control Module: Description and Operation
Powertrain Control Module (PCM)
Powertrain Control Module (PCM)
An on-board vehicle Powertrain Control Module (PCM) performs the following functions:
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accepts information from various engine sensors to compute the required fuel flow rate necessary to maintain a prescribed air/fuel ratio throughout
the entire engine operational range.
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sends out a command to the fuel injectors to meter the appropriate quantity of fuel.
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determines and compensates for the age of the vehicle and its uniqueness.
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automatically senses and compensates for changes in altitude (for example, from sea level to mountains).
