A4 Quattro Sedan L4-1.8L Turbo (AWM) (2001)
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Air Injection Control Valve: Testing and Inspection
Combination Valve For Secondary Air Inlet
Combination valve for secondary air inlet, checking function and for leaks
Special tools and equipment
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Vacuum hand pump VAG 1390
Test requirements:
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Vacuum pipes and hose connections do not leak.
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Vacuum lines not blocked.
Test sequence
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Remove engine cover -arrows-.
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Remove vacuum hose -arrow- from combination valve.
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Connect hand vacuum pump V.A.G 1390 to vacuum unit of combination valve.
