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Home >> Chevrolet >> 2001 >> Lumina V6-3.1L VIN J >> 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 >> BARO

BARO

Scan Tool Displays 10 to 105 kPa/0.00 to 5.00 Volts. The barometric pressure reading is determined from the MAP sensor signal monitored during key up and Wide-Open Throttle (WOT) conditions. Barometric pressure is used to adjust fuel delivery and spark advance to compensate for altitude changes.
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