A6 Quattro Wagon V6-3.0L (AVK) (2002)
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Check the following wire connections for open circuit and short circuit to Ground (GND) and B+:
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Repair short circuit to Ground (GND) connection or open circuit if necessary.
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If wire connection is OK:
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Replace Engine Control Module (ECM).
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If no malfunctions are detected:
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Replace mechanical camshaft adjuster, Refer to Valve, Intake/Exhaust, Service and Repair. camshafts, removing and installing, Refer to Camshaft,
Engine, Service and Repair.