Barometric Pressure (BARO) Sensor Inspection

NOTE:

Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL .)

Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON position.
Select BARO on the M-MDS.
Verify that the BARO PID (pressure) and barometric pressure are practically equal.
- If not as verified, replace the PCM. (See PCM REMOVAL/INSTALLATION ).
  
  Fig 1: Identifying Data Link Connector 2
  Courtesy of MAZDA MOTORS CORP.