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Atmospheric Pressure Sensor

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

ATMOSPHERIC PRESSURE SENSOR SPECIFICATIONS

Application Voltage
Below 6500 Ft. 3.5-4.5
Above 6500 Ft. 2.5-3.5
Fig 1: Checking Atmospheric Pressure Sensor
G35539Courtesy of MAZDA MOTORS CORP.