A6 Quattro Sedan V6-3.2L (BKH) (2005)
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Remove air duct hose, thereby loosening hose clamp - 2 - and opening clips - arrows -.
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Disconnect electrical harness connectors.
1. Change over valve for intake manifold flap (N239)
2. Intake Manifold Tuning (IMT) valve position sensor (G513)
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Remove vacuum lines - arrow A - and - arrow B -.
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Disconnect vacuum hose - arrow C - at leak detection pump.
