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Alero L4-144 2.4L DOHC VIN T SFI
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Powertrain Management
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions - Powertrain Systems
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Engine Scan Tool Data Definitions
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Fuel Trim Cell
Fuel Trim Cell
RANGE 0-22:
A Fuel Trim Cell depends upon the engine speed and the MAP sensor readings. RPM vs.
MAP
is broken down into 22 fuel trim cells. The Fuel Trim Cell indicates which cell is currently active.