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Barometric Pressure Sensor: Description and Operation

ENGINE CONTROL COMPONENTS

Barometric (BARO) Pressure Sensor
The BARO pressure sensor is a variable capacitor sensor that processes a signal indicating atmospheric pressure. This allows the PCM to compensate for altitude. The PCM uses this information to calculate injection timing and glow plug control. At higher altitudes, glow plug on time is increased to reduce start-up smoke. The BARO sensor is located behind the instrument panel steering column cover.


Barometric (BARO) Pressure Sensor:




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