Across the air flow sensor plate potentiometer V

Disconnect the air filter connecting hose. Using test leads, connect pin 3 of the disconnected air flow sensor plug with air flow sensor plug terminal 3 and pin 4 with air flow sensor plug terminal 4.

Connect a voltmeter to air flow sensor terminal 2 and ground (turn on ignition).

Display: approx. 250 - 260 m V

Using a non-metallic tool (e.g. screwdriver handle), press the air flow sensor plate to full load position.

It must be possible to move the air flow sensor plate easily and without jamming. Observe the voltmeter's display at the same time. It must not be possible to observe voltage jumps or a voltage drop during the opening or closing operations of the air flow sensor plate.

Air flow sensor plate at full load: Display approx. 4.60 Volt

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