Passat GLS Wagon L4-1.8L Turbo (AUG) (2001)
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Connect VAG 1598/31 adapter cable to control module wiring harness. Engine Control Module (ECM) is not connected.
I
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Engine code ATW
II -
Engine codes AUG, AWM
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Disconnect fuel injector connectors.
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Remove mounting bolts from fuel distributor.
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Then remove the fuel distributor completely.
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Disconnect vacuum hose from fuel pressure regulator.
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Lift fuel rail with fuel injectors off intake manifold and support it.
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Bridge test box sockets 1 and 65 using auxiliary wires from VAG 1594 connector test kit.
NOTE: The only purpose of this step is to allow the Fuel Pump (FP) to run with the engine at standstill.
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Switch ignition on.
Checking Proper Seal
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Check proper seal of fuel injectors (visual inspection). With Fuel Pump (FP) running, only 1 to 2 drops per minute should escape from each valve.
If fuel loss is greater:
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Switch off ignition and replace leaking fuel injector.