GTI V6-2.8L (BDF) (2002)
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Connect hand vacuum pump VAG 1390 to vacuum hose from combi-valve -arrow-.
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Disconnect pressure hose to combi-valve at coupling -arrow- and blow in using light pressure.
Combi-valve must be closed.
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Operate hand vacuum pump.
Combi-valve must open.
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When the combi-valve does not open or is continuously open
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Replace combi-valve.
With Generic Scan Tool
Secondary Air Injection (AIR) Valve, Checking
Solenoid valve is closed when no voltage is present.
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Secondary Air Injection (AIR) Solenoid Valve -N112- must be OK.
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Ignition switched off.
Test sequence