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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Control System (VIN M)) >> Barometric Pressure (BARO) Sensor Inspection

Barometric Pressure (BARO) Sensor Inspection

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • Because the BARO sensor is integrated in the PCM, replacing the BARO sensor includes replacement of the PCM.
  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON (engine off).
  3. Measure the barometric pressure using a barometer.
  4. Verify that the measured barometric pressure and the actually measured barometric pressure (PCM PID: BARO) input from the BARO sensor match. (See PID/DATA MONITOR INSPECTION .)
    • If the measured barometric pressure and the actually measured barometric pressure do not match, replace the PCM. (See PCM REMOVAL/INSTALLATION .)
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