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Home >> Mazda >> 2015 >> 3 SV, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Intake Air Temperature (IAT) Sensor Inspection >> IAT Sensor No. 1 >> Resistance inspection
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Resistance inspection

NOTE:
  • Because the IAT sensor No. 1 is integrated in the MAF sensor, replacing the IAT sensor No. 1 includes replacement of the MAF sensor/IAT sensor No. 1.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
  2. Disconnect the MAF sensor/IAT sensor No. 1 connector.
  3. Measure the resistance between MAF sensor/IAT sensor No. 1 terminals A and B.
    • If not as specified, replace the MAF sensor/IAT sensor No. 1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION .)
      IAT RESISTANCE SPECIFICATION (REFERENCE)

      IAT(°C{°F}) Resistance (Kilohms)
      -20 {-4} 13.7-16.6
      20 {68} 2.49-2.79
      60 {140} 0.622-0.703
      Fig 1: Identifying MAF Sensor/IAT Sensor No. 1 Connectors
      G09796917Courtesy of MAZDA MOTORS CORP.
      Fig 2: Resistance Versus Temperature Graph
      G09796918Courtesy of MAZDA MOTORS CORP.