S4 V8-4.2L (BHF) (2004)
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Connect voltage tester V.A.G 1527 B as follows:
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Operate starter briefly.
^
LED must light up
If LED does not light up:
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Check wiring connection from terminal 1 of electrical harness connector via fuse to Motronic Engine Control Module (ECM) Power Supply Relay
-J271- for open circuit according to wiring diagram.
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Repair wiring connection if necessary.
If LED lights up:
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Check activation
Checking activation
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Connect voltage tester V.A.G 1527 B to terminals - 1 - (B+) and - 2 - of electrical harness connector.
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Connect Vehicle Diagnostic, Testing and Information System VAS 5051 A and select vehicle system "01 - engine electronics". Ignition must be
switched on Guided Fault Finding in VAS 5051 A.
Display on VAS 5051 A:
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In selection - 1 -, click on function "03 - output Diagnostic Test Mode (DTM)".
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Press button repeatedly until Camshaft Adjustment Valve 1 -N205- is actuated.
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LED must blink
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Press button repeatedly until Camshaft Adjustment Valve 2 -N208-- is actuated.
