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Air Flow Meter/Sensor: Testing and Inspection




MASS AIR FLOW (MAF) SENSOR INSPECTION [MZI 3.7 V6]

NOTE:
- The MAF sensor and IAT sensor cannot be removed as a single unit. When replacing the MAF sensor or IAT sensor, replace it together with the MAF/IAT sensor as a single unit.

Visual Inspection

1. Disconnect the negative battery cable. Removal and Replacement

2. Disconnect the MAF/IAT sensor connector.

3. Remove the MAF/IAT sensor. Service and Repair

4. Verify the following items of the MAF sensor.

- Dirt, damage, cracks
- Rusted sensor terminal
- Bent sensor terminal

- If there is any malfunction, replace the MAF/IAT sensor. Service and Repair

Voltage Inspection

1. Disconnect the negative battery cable. Removal and Replacement

2. Remove the MAF/IAT sensor with the connector still connected.

3. Reconnect the negative battery cable. Removal and Replacement

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






5. Switch the ignition to ON.

6. Verify that the MAF sensor output voltage (PID: MAF) changes when wind is introduced gradually to the sensor part of the MAF sensor. On-Board Diagnostic Test

- If it cannot be verified, replace the MAF/IAT sensor. Service and Repair

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