Scoupe L4-1468cc 1.5L SOHC (8 VALVE) (1991)
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Barometric Pressure Switch: Description and Operation
Barometric Pressure Sensing System
The Barometric Pressure Sensor installed on the Air Flow Sensor (AFS), senses the atmospheric pressure and converts it into a voltage which is sent to
the ECU. The ECU uses this signal to compute the altitude at which the vehicle is running, accordingly correcting the air-fuel ratio and the ignition
timing, thus improving driveability at high altitude.
