Passat Sedan 4Motion V6-2.8L (ATQ) (2003)
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Perform output Diagnostic Test Mode (DTM) again. If intake manifold change-over valve is activated, uniformly operate hand pump.
The setting element must, between the two positions, switch back and forth
If the change-over does not function as described:
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Check whether change-over mechanism moves easily. To do this, operate linkage by hand.
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Check whether vacuum lines are correctly connected.
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Check whether vacuum system, including vacuum reservoir in left wheel well, is properly sealed.