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Okay...let's first find out ...what is it you are trying to accomplish.?..
The unit you seem to be refering to is the actuator...the black plastic unit on the back side of the air flap housing.....This unit changes the fuel pressure in the upper chamber to control the quantity of fuel delivered by the injectors.
It is driven by variations in mA (Mili amps ) by the ECU after it interprets the signal from the O2 sensor in the exhaust.
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