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Home >> Mazda >> 2012 >> 3 Mazdaspeed, 2.3L Eng VIN 4 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System [MZR 2.3 DISI Turbo] >> Intake Air Temperature (IAT) Sensor Inspection >> Resistance Inspection

Resistance Inspection

NOTE:
  • Because the IAT sensor is integrated in the MAF sensor, replacing the IAT sensor includes replacement of the MAF/IAT sensor.
  1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI TURBO] .)
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI TURBO] .)
  3. Disconnect the MAF/IAT sensor connector.
  4. Measure the resistance between MAF/IAT sensor terminals D and E.
    Fig 1: Identifying MAF/IAT Sensor Terminals
    G08155456
    SPECIFICATION

    IAT (°C {°F}) Resistance (kilohms)
    20 {68} 2.21-2.69
    60 {140} 0.493-0.667