S5 Quattro Coupe V8-4.2L (CAUA) (2009)
Fuel Pressure: Testing and Inspection
Fuel Delivery, Checking
Fuel Delivery, Checking
Special tools, testers and auxiliary items required
‹› Hand held remote control (jumper).
‹› Multimeter.
‹› Fuel pressure test set (high pressure).
‹› Measuring container, fuel-resistant.
Test conditions
‹› Battery voltage min. 12.5 V.
‹› Fuel filter OK.
‹› Fuse (SB81) OK.
‹› Fuel Pump (FP) Control Module (J538) OK.
‹› Fuel tank at least 1/4 filled.
‹› Ignition switched off.
‹› Observe all safety precautions. Refer to => [ Safety Precautions ] See: Powertrain Management/Fuel Delivery and Air Induction/Service
Precautions/Vehicle Damage Warnings/Safety Precautions/Fuel Supply.
‹› Observe all clean working conditions. Refer to => [ Clean Working Conditions ] See: Powertrain Management/Fuel Delivery and Air
Induction/Service Precautions/Vehicle Damage Warnings/Clean Working Conditions/General, Technical Data.
Work procedure
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Slide the seats forward as far as possible. Then fold seat back forward.
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Push the battery cover to the side - arrow A - and lift upward - arrow B -.
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Loosen the negative battery cable terminal nut - 1 - and remove the cable from the battery negative post.