A4 Quattro Wagon V6-3.2L (BKH) (2005)
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Connect a jumper cable from a Electrical connector test lead set to terminal - 4 - of the fuel delivery unit and to vehicle Ground (GND).
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Remove the fuel filler cap.
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Remove the rear engine cover - arrows - .
CAUTION: The fuel system is under pressure. Before opening system, place rags around the connection area. Then release pressure by
carefully loosening the connection.
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Disconnect the fuel line - arrow - .
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Connect a Pressure gauge (High pressure) to the fuel line.
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Connect the extension hose - arrow - to the pressure gauge and hold it in a measuring container.
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Open the pressure gauge shut-off valve. The lever points in the direction of flow.
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Create fuel system pressure by pressing the switch on the Hand held remote control (jumper) in and slowly closing the shut-off valve of the
pressure gauge.