Check The Mass Air Flow Sensor Unit

Connect the battery positive terminal to terminal No. 3 and the battery ground terminal to terminal No. 4, the circuit tester positive terminal to terminal No. 5 and the circuit tester ground terminal to terminal No. 4.

Fig 1: Connecting Battery Positive Terminal 3 And Battery Ground Terminal 4
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Check the voltage changes when air is blown from the arrow pointing area to the mass air flow sensor unit.

Fig 2: Locating Mass Air Flow Sensor Unit Pointing Area

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