RS 6 V8-4.2L Turbo (BCY) (2003)
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Test for open circuit and short to positive or ground in following wiring connections:
Valve -1- for camshaft adjustment -N205- or Valve -2- for camshaft adjustment -N208-.
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Eliminate open circuit or short circuit using wiring diagram.
If wiring is OK
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Install a new engine control unit:
If no fault is found:
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Install a new mechanical camshaft adjuster.
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Install air filter housing.