Passat GLS Wagon L4-1.8L Turbo (AUG) (2001)
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Air Diverter Valve: Testing and Inspection
Combination valve, checking
Special tools and equipment
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VAG1390 hand vacuum pump
Test requirements
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No DTCs in DTC memory:
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Output Diagnostic Test Mode (DTM) performed:
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No leaks in vacuum lines or hose connections
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Vacuum hoses not clogged or kinked
Test sequence
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Disconnect vacuum hose at combination valve (arrow) and connect VAG1390 vacuum pump.
Note: Do not use pressurized air for the following test!
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Disconnect pressure hose (arrow) at Secondary Air Injection (AIR) pump motor and blow air in with light pressure. Combination valve must
