volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Secondary Air Injection (Air) Solenoid Valve Checking|Page 3776 > < Air Injection Control Valve|Locations
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Air Injection Control Valve: Testing and Inspection
Secondary Air Injection (Air) Solenoid Valve Checking

Secondary Air Injection (AIR) solenoid valve -N112-, checking 

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required. 

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V.A.G. 1390 Hand vacuum pump

Check condition 
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Not DTCs must be stored in DTC memory.

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Carry out Output Diagnosis Test Mode (DTM)

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Vacuum pipes and hose connections free of leaks.

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Vacuum pipes not blocked/kinked.

Test sequence 

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Pull vacuum hose -1- off secondary air intake valve -2- (N112).

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Connect hand vacuum pump V.A.G. 1390 to vacuum hose -1-.

Note: 
Do not use compressed air during the following check!

Secondary Air Injection (Air) Solenoid Valve Checking|Page 3776 > < Air Injection Control Valve|Locations