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Home >> Volkswagen >> 2005 >> Passat Sedan (3B3) L4-1.8L Turbo (AWM) >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Air Injection >> Air Injection Control Valve >> Testing and Inspection >> Combi-Valve Checking
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Combi-Valve Checking



Combi-Valve, Checking

Special tools, testers and auxiliary items required







- Hand Vacuum Pump V.A.G 1390

Test conditions
- Vacuum lines and hose connections free of leaks
- Vacuum lines not blocked or kinked

Test sequence







- Disconnect vacuum hose at combination valve - arrow - and connect the Hand Vacuum Pump V.A.G 1390.
- Remove noise insulation

NOTE: Do not use compressed air during following check.







- Disconnect Seal Installer - arrow - at Secondary Air Injection (AIR) Pump Motor V101 and blow air in with light pressure.
- Combination valve must close.
- Operate Hand Vacuum Pump V.A.G 1390.
- Valve must open.

If the combi-valve does not open:
- Replace the combination valve.
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