MASS AIR FLOW (MAF) SENSOR INSPECTION [L8, LF]

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Visual inspection

1. Visually inspect the MAF 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. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [L8, LF].)

Voltage Inspection

1. Remove the MAF/IAT sensor without disconnecting the MAF/IAT sensor connector.

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

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3. Turn the ignition switch to the ON position.

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

  • If not as verified, replace the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [L8, LF].)