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Atmospheric Pressure Sensor

Connect voltmeter to "D" terminal of atmospheric pressure sensor and ground. See Fig 1 . Turn ignition and note voltage. Voltage should be within specification. See ATMOSPHERIC PRESSURE SENSOR VOLTAGE  table. Replace sensor if not within specification.

ATMOSPHERIC PRESSURE SENSOR VOLTAGE

Application Voltage
Below 6500 Ft. 3.5-4.5
Above 6500 Ft. 2.5-3.5
Fig 1: Checking Atmospheric Pressure Sensor
G94863Courtesy of MAZDA MOTORS CORP.