Passat Wagon L4-1781cc 1.8L DOHC Turbo (ATW) (2000)
Air Injection Control Valve: Testing and Inspection
Combination valve, checking
Special tools and equipment
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V.A.G 1390 Hand vacuum pump
Checking conditions
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No code stored in Diagnostic Trouble Code (DTC) memory.
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Perform Output Diagnostic Test Mode (DTM).
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Vacuum lines and hose connections free of leaks.
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Vacuum lines not blocked/kinked.
Checking sequence
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Pull vacuum hose off combination valve (arrow) and connect hand vacuum pump V.A.G 1390.
Note: Do not use compressed air during the following check!