Allroad Quattro V8-4.2L (BAS) (2004)
If LED does not light:
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Use wiring diagram to check for open circuit in wiring from contact 1 of connector via fuse to Motronic current supply relay.
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Use wiring diagram to eliminate open circuit in wiring.
If LED lights:
Checking actuation
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Vehicle diagnostic, testing and information system VAS 5051 connected up; vehicle self-diagnosis and vehicle system "01 Engine electronics"
selected. Ignition must be on.
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Connect voltage tester V.A.G. 1527 B between contacts 1 and 2.
Indicated on VAS 5051:
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From list -1- select diagnostic function "03- Final control diagnosis".
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Press the > key, until the valve is activated the right electro-hydraulic engine mount solenoid valve -N145.
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LED must flash
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Press the > key, until the valve is activated the left electro-hydraulic engine mount solenoid valve -N144-.
^
LED must flash
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Terminate function "03- Final control diagnosis" by touching < key.
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Switch off ignition.
If LED does not flash or if it is permanently lit:
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Connect test box V.A.G. 1598/31 to wiring harness connectors. Actual engine control module is not to be connected. Connect ground (GND) clip
of test box to ground (GND) (not shown in Fig.).
CAUTION: To avoid destroying electronic components, select required measuring range before connecting test leads and observe test conditions.