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Absolute Pressure Sensor: Description and Operation

The barometric pressure sensor senses changes in barometric pressure and provides this information, through an electrical signal, to the ECM. The
sensor produces a voltage signal of 3.5 - 4 volts to indicate barometric pressure. The voltage increases in proportion to increases in altitude (decreases in
barometric pressure). This sensor is normally used with the MAP sensor.

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Absolute Pressure Sensor <--> [Barometric Pressure Sensor] > Component Information > Specifications > Page 270

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