New Beetle Turbo S L4-1.8L Turbo (AWP) (2002)
Air Injection Control Valve: Testing and Inspection
Combination Valve, Checking
Recommended special tools and equipment
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VAG1390 Hand Vacuum Pump
Test requirements
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No leaks in vacuum lines or hose connections.
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Vacuum hoses not clogged or kinked
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Pressure hose for Secondary Air Injection (AIR) Pump Motor not clogged or kinked
Test sequence
NOTE: Do not use pressurized air for the following test.
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Disconnect vacuum hose -1- at Secondary Air Injection (AIR) Solenoid Valve -N112- -2-.
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Disconnect pressure hose -3- at Secondary Air Injection (AIR) pump motor and blow air in with light pressure (arrow).
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, item 2.