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Home >> Mazda >> 2016 >> CX-3 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Service Information) >> 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. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  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.
    Fig 1: Locating MAF Sensor/IAT Sensor Terminals
    G10969086Courtesy of MAZDA MOTORS CORP.

    Specification (Reference) 

    IAT (°C {°F}) Resistance (Kilohms)
    -20 {-4} 13.7-16.6
    20 2.49-2.79
    60 0.622-0.703
    Fig 2: IAT Resistance/Temperature Graph
    G10969087Courtesy of MAZDA MOTORS CORP.