Mazda 2: Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor

Mazda 2 2007-2014 Service Manual / Engine / Control System / Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor

MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION

CAUTION:

1. Disconnect the negative battery cable.

2. Disconnect the MAF/IAT sensor connector.

3. Remove the MAF/IAT sensor.

Mazda 2. MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION

4. Install in the reverse order of removal.

MASS AIR FLOW (MAF) SENSOR INSPECTION

CAUTION:

1. Verify the connection condition of the MAF sensor/IAT sensor connector.

2. Verify the MAF sensor voltage under no airflow conditions using the following procedure:

CAUTION:

  • Do not create suction in the exhaust pipe by cranking the engine and causing air to flow through the exhaust duct. It could cause a measurement error because the MAF sensor voltage is measured under no airflow conditions.

Specification

3. Remove the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION).

4. Verify that there is no foreign matter in the MAF/IAT sensor.

  • If there is visible, large foreign matter, replace the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION).
  • If there is no foreign matter, go to the next step.

Mazda 2. MASS AIR FLOW (MAF) SENSOR INSPECTION

5. Verify that there is no damage, cracks, or dirt on the MAF sensor part of the MAD/IAT sensor.

NOTE:

6. Install the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION).

INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION

CAUTION:

1. Disconnect the negative battery cable.

2. Disconnect the MAF/IAT sensor connector.

3. Verify that the resistance between terminals D and E is within the specification.

Mazda 2. INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION

IAT sensor specification

Mazda 2. INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION

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