audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Air Injection Control Valve: Testing and Inspection
With Generic Scan Tool

Combination Valves For Secondary Air Injection (AIR) System, Checking Function And For Proper Seal 

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 lines not clogged.

  
Test sequence 

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Remove engine cover (arrows).

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Remove the air intake tube (arrows) between the air filter and the throttle valve part.

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