A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
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Use Test Adapter (VAS 5570) in order to establish the electrical connection between the vehicle and the Fuel Pressure Sensor (G247).
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Connect vehicle diagnosis, testing and information system (VAS 5051B).
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Switch on ignition.
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Select "engine electronics" in OBD.
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Then select "Measured values".
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Select "Fuel pressure" from the list.
The current value is displayed in field 3, which the Fuel Pressure Sensor (G247) reports to the engine control module.
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Switch Digital Manometer (VAS 6394/1) on by quickly pressing button - A - one time.