Secondary Air Injection Combination Valves, Version 2, Checking For Function And Leaks

WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Hand Vacuum Pump VAS 6213

Procedure

-- Remove the vacuum hose -3- from the secondary air injection combination valve -2-.

Fig 1: Identifying Secondary Air Hose -1-, Secondary Air Injection Combination Valve -2-, And Vacuum Hose -3- (Version 2)

Courtesy of AUDI OF AMERICA, LLC

-- Remove the secondary air hose -1- by pressing the release buttons.

-- Connect the VAS 6213 to the vacuum connection -1- on the secondary air combination valve that will be tested.

Fig 2: Connecting Hand Vacuum Pump To Secondary Air Injection Combi-Valve

Courtesy of AUDI OF AMERICA, LLC

-- Connect a suitable assisting hose to the secondary air combination valve -2-.

-- Blow lightly into the assisting hose by mouth, do not use compressed air.

Secondary Air Injection (AIR) combination valve must be closed, it must not be possible to blow through.

-- Run the hand vacuum pump to generate a vacuum.

The Secondary Air Injection (AIR) combination valve must open, it must be possible to blow through.

-- If the secondary air combination valve does not react as described, replace it, refer to SECONDARY AIR INJECTION LEFT COMBINATION VALVE , SECONDARY AIR INJECTION RIGHT COMBINATION VALVE .