S4 Quattro Wagon V8-4.2L (BHF) (2008)
Fuel Pressure: Testing and Inspection
Fuel Pump Delivery Quantity, Checking
Fuel Pump Delivery Quantity, Checking
Special tools, testers and auxiliary items required
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Hand held remote control (jumper).
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Multimeter.
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Electrical connector test lead set.
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Fuel pressure test set (high pressure).
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Measuring container, fuel-resistant.
Test conditions
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Fuse S228 (position 28) OK
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Fuel Pump (FP) Relay J17 OK.
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Battery voltage 12.5 V
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Fuel filter OK
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Fuel tank at least 1 / 4 filled.
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Fuel pressure regulator OK.
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Ignition switched off.
Test sequence
CAUTION: Wear protective gloves.
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Remove right locking flange cover - arrows -.
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Disconnect the electrical harness connector - 1 - from the fuel delivery unit.
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Connect a Hand held remote control (jumper) to terminal - 1 - of the fuel delivery unit and to vehicle battery (+).