A6 Quattro Wagon V6-3.0L (AVK) (2002)
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Always complete checking procedure (check all 3 sending units).
Fuel Tank, draining
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Remove fuse 28 from relay panel (left-row, fifth large fuse from top).
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Start and run engine until engine runs out of fuel (relieves pressure in fuel system).
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Switch ignition OFF.
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Remove fuel supply hose from sending unit -G- and connect to VAG 1433A fuel cart or similar approved equipment.
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Connect VAG1348/3 remote switch with VAG1348/3-2 adapter to cavity for fuse 28 (arrow).
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Connect test probe to Battery Positive Voltage (B+).
With remote switch connected:
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Operate switch and pump fuel into fuel cart until tank chambers for sending units -G237- and -G- are empty.
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Switch OFF VAG1348/3 remote switch and remove VAG1348/3-2 adapter from cavity for fuse 28.
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Remove test probe from Battery Positive Voltage (B+).
NOTE: Chamber for sending unit -G169- will still be full of fuel, remove fuel as follows:
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Reconnect fuel supply line to sending unit -G- with appropriate clamp.
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Reinstall fuse 28 in relay panel.
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Start and run engine for approx. 15 minutes.
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Remaining fuel from chamber for sending unit -G169- will be siphoned into chamber for sending unit -G-.