BARO PID inspection procedure

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION BARO PID inspection procedure
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Confirm the ignition switch is turned to ON.
  2. Confirm that the following PIDs are within the specifications:

    BARO 

    1. 101.3 kPa {760 mmHg, 29.9 inHg} (Absolute pressure) 

    IAT 

    1. 10-50°C {50-122°F} 
  3. Disconnect the EGR boost sensor connector and measure the voltage at EGR boost sensor connector terminal C.
    Fig 1: Identifying EGR Boost Sensor Harness Side Connector
    G03637962Courtesy of MAZDA MOTORS CORP.

    Voltage 

    1. 4.5-5.5 V 
  4. Reconnect the connector.
  5. Disconnect the vacuum hose from the EGR boost sensor.
  6. Connect the vacuum pump to the EGR boost sensor.
  7. Select BARO PID on the WDS or equivalent.
  8. Apply the vacuum and verify that the BARO PID is as specified on the table.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.