Secondary Air Injection Solenoid Valve -N112-, CHECKING

WARNING: This page is about a different variant/trim than selected.

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.