Secondary Air Injection Solenoid Valve -N112-, CHECKING

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 Volkswagen Jetta, 2009 Volkswagen Jetta, 2008 Volkswagen Jetta, 2007 Volkswagen Jetta, and 2006 Volkswagen Jetta. 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
Hose, for example, a Coolant Hose

Test Sequence:

NOTE:

Do not use compressed air during the following check!

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

-- Disconnect the pressure hose -2- from the secondary air injection solenoid valve -3-. To do so, compress the securing ring.

Fig 1: Identifying Secondary Air Injection Solenoid Valve N112 Electrical Harness Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Disconnect the harness connector -4-.

-- Slide the assisting hose -1-, for example a coolant hose, onto the secondary air injection 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 secondary air injection solenoid valve.

If The Valve Is Closed:

-- Connect the terminals on the connector 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 The Valve With The Assisting Hose Properly Sealed:

-- Replace the secondary air injection solenoid valve.