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Alero V6-3.4L VIN E
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data Definitions - Powertrain Systems
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Fuel Trim Cell
Fuel Trim Cell
Scan tool displays
0-9
. Fuel trim cell is dependent upon the engine speed and the MAF sensor readings. A plot of RPM vs.
MAF
is divided into 10 cells. The fuel trim cell indicates which cell is currently active.