Golf GL L4-2.0L (AEG) (2001)
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Disconnect vacuum hose -1- from Secondary Air Injection solenoid valve -N112 -2-.
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Connect V.A.G 1390 hand vacuum pump to vacuum hose -1-.
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Disconnect pressure hose at Secondary Air Injection (AIR) pump motor (arrow) and blow into it with light pressure. Combination valve must
close.
Note:
To disengage, compress the buttons at the hose coupling.
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Operate vacuum pump. Combination valve must open.
If the combination valve does not open or it is constantly open:
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Replace combination valve.
