Secondary Air Injection Solenoid Valve, Checking

WARNING: This page is about a different car, the 2009 Volkswagen Rabbit, 2008 Volkswagen Rabbit, 2007 Volkswagen Rabbit, and 2006 Volkswagen Rabbit. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Connector Test Set V.A.G 1594 C
Assisting Hose, for example, a Coolant Hose

Test Sequence

NOTE:

Do not use compressed air during following check!

-- Remove the engine cover with air filter. Refer to ENGINE COVER WITH AIR FILTER .

-- Disconnect connecting pipe -2- from the secondary air injection solenoid valve -N112- -3-. To do so, compress the securing ring.

Fig 1: Disconnecting Pressure Hose From Secondary Air Injection (AIR) Solenoid Valve N112

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the connector -4-.

-- Slide the assisting hose -1-, for example, a coolant hose, onto the Secondary Air Injection (AIR) solenoid valve.

-- Blow forcefully into the assisting hose -arrow-.

The valve must be closed.

If air can be blown through the valve with the assisting hose properly sealed:

-- Replace the AIR solenoid valve.

If the valve is closed:

-- Connect the terminals on the valve connection -5- with adapter cables from the connector test set V.A.G 1594 C to battery positive (+) and negative (-).

-- Blow forcefully into the assisting hose -arrow-.

The valve must be opened.

If no air can be blown through valve with assisting hose properly sealed:

-- Replace the AIR solenoid valve. Refer to Secondary Air Injection Solenoid Valve -N112- .