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Visual Inspection

1.Disconnect the negative battery cable.

2.Remove the MAF/IAT sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)

3.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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)

Voltage Inspection

1.Remove the MAF/IAT sensor without disconnect 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 voltage (M-MDS PID: MAF) varies.

• If not as verified, replace the MAF/IAT sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)