volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Relays and Modules - Fuel Delivery and Air Induction > < Intake Manifold Vacuum Damper|Testing and Inspection
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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.

Relays and Modules - Fuel Delivery and Air Induction > < Intake Manifold Vacuum Damper|Testing and Inspection