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Resistance Inspection

  1. Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the boost pressure sensor/boost air temperature sensor. (Refer to BOOST PRESSURE SENSOR/BOOST AIR TEMPERATURE SENSOR REMOVAL/INSTALLATION .)
  3. Measure the resistance between boost pressure sensor/boost air temperature sensor terminals A and B.
    Fig 1: Identifying Boost Pressure Sensor/Boost Air Temperature Sensor Connector Terminals A And B
    G10947060Courtesy of MAZDA MOTORS CORP.
    RESISTANCE SPECIFICATION

    IAT (°C {°F}) Resistance (Kilohms)
    0 Approx. 5.9
    20 Approx. 2.5
    80 Approx. 0.323
    130 Approx. 0.0893
    Fig 2: Boost Pressure Sensor/Boost Air Temperature Sensor Resistance Graph
    G10947061Courtesy of MAZDA MOTORS CORP.
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