buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Absolute Pressure Sensor <--> [Barometric Pressure Sensor]|Description and Operation|Page 1882 > < Ignition Control Module|Testing and Inspection|Page 1876
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Absolute Pressure Sensor: Description and Operation

Sensor--normally used in combination with the MAP sensor--sends a varying voltage to the ECM representing barometric pressure--typically 3.0
to 4.5 volts. 
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Voltage increases as altitude increases--barometric pressure decreases.

Absolute Pressure Sensor <--> [Barometric Pressure Sensor]|Description and Operation|Page 1882 > < Ignition Control Module|Testing and Inspection|Page 1876