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Home >> Pontiac >> 1999 >> Firebird V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data Definitions - Powertrain Systems >> Fuel Trim Cell
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Fuel Trim Cell

The scan tool displays a range of 0 to 23. The PCM determines from the MAP and RPM inputs which fuel trim cell to operate the engine in. The fuel trim cell displayed on the scan tool is the cell that the engine is operating under.
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