A6 Quattro Sedan V6-3.2L (BKH) (2005)
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Connect multimeter between terminal - 3 - and - 4 - of harness connector for voltage measurement.
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Switch ignition on.
Specified value: approx. battery voltage.
If the specification is not obtained:
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Repair open circuit in wiring according to wiring diagram.
Fuel Pump (FP) Control Module J538 activation, checking
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Remove protective cap.
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For voltage testing, connect the multimeter with measuring probes and connector adapters from the connector test set V.A.G 1594C between
clamp - 4 - and - 5 -, as shown in the 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.
Specified value at start and in idle: approx. 5.0 V.
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Depress accelerator pedal completely and then release it (brief throttle burst).
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Specified value: The voltage value must first rise slightly, then fall and then rise again to the value previously read.
If the reading does not result as described:
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Switch off ignition.
