Mazda 3 Service Manual: Mass Air Flow (MAF) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Intake / Mass Air Flow (MAF) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Visual Inspection

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Disconnect the MAF/IAT sensor connector.

4. Remove the MAF/IAT sensor..

5. Visually inspect the MAF/IAT sensor for the following:

Damage, cracks, soiling
Rusted sensor terminal
Bent sensor terminal

If there is any malfunction, repair or replace the MAF/IAT sensor..

Voltage Inspection

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Remove the MAF/IAT sensor without disconnect the MAF/IAT sensor connector..

4. Reconnect the negative battery cable..

5. Connect the M-MDS to the DLC-2.

6. Switch the ignition to ON.

7. As the air gradually approaches the MAF detection part of the MAF/IAT sensor, verify that the MAF sensor output voltage (PID: MAF) varies..

If not as verified, replace the MAF/IAT sensor..

Manifold Absolute Pressure (Map) Sensor/Intake Air Temperature (Iat) Sensor No.2 Removal/Installation [Skyactiv G 2.0]

NOTE: Because the IAT sensor No.2 is integrated in the MAP sensor, replacing the IAT sensor No.2 includes replacement of the MAP sensor/IAT sensor No.2. 1. Remove the battery cover.. ...

Mass Air Flow (MAF) Sensor/Intake Air Temperature (Iat) Sensor No.1 Removal/Installation [Skyactiv G 2.0]

CAUTION: Be careful not to hit the sensor element or allow foreign matter to get on it during sensor removal/installation. If the sensor element is hit or foreign matter gets on it, an e ...

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