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Home >> Audi >> 2001 >> S4 Quattro, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Air Induction System >> Intake Manifold Change-Over Valve

Intake Manifold Change-Over Valve

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Flaps in the multi-path intake manifold are opened and closed by the intake manifold change-over valve. Change-over valve is a vacuum servo electronically activated by the ECM.

To test intake manifold change-over valve, see appropriate DTC under DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate SELF-DIAGNOSTICS article.

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