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Home >> Pontiac >> 2001 >> Bonneville V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> Fuel Tank Pressure Sensor

Fuel Tank Pressure Sensor

The scan tool range is 0-9. Fuel trim cell is dependent upon engine speed and MAF sensor readings. A plot of RPM vs. MAF is divided into 10 cells. Fuel trim cell indicates which cell is currently active.The scan tool displays 0-5 volts or -17.5-7.5 in of H2O Fuel tank pressure is used extensively for EVAP purge control and EVAP system diagnostics.
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