A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
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Unbolt cover for right locking flange - arrows - .
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Fold protective boot back.
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For voltage testing, connect the hand multimeter V.A.G 1526 B with measuring probes and connector adapters from the connector test set V.A.G
1594 C or V.A.G 1594 A between clamp - 1 - and - 4 - , as shown in illustration. The electrical connection remains connected.
NOTE: Connector sockets are numbered respectively on the rear side of the connector.
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Start engine.
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Specified value during start and while running at idle: 4 to 5.7 V.
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Depress accelerator pedal completely and then release it (brief throttle burst).
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Specification: The voltage value must first rise slightly, then fall and then rise again to the previously read value.
If the reading does not result as described:
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Check voltage supply and activation of Fuel Pump (FP) Control Module J538.
Check voltage supply for Fuel Pump (FP) Control Module J538
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Remove Fuel Pump (FP) Control Module J538.
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Disconnect electrical harness connector - arrow - on Fuel Pump (FP) Control Module J538 .