Secondary Air Injection (AIR) solenoid valve N112 , checking: Notes

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools - Secondary Air Injection (AIR) Solenoid Valve N112 , Checking

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Special tools, testers and auxiliary items required

Multimeter VAG1526A or equivalent
Voltage tester VAG1527B
Connector test set VAG1594A
Adapter VAG1598/31

Vehicle Diagnostic, Testing and Information System VAS5051 VAS5051 with VAS5051/1

Scan Tool VAG1551 with VAG1551/3A