Vehicles with engine code AFP

Vehicles with engine code BDF. See VEHICLES WITH ENGINE CODE BDF .

NOTE: Do not use pressurized air for the following test!

Remove front noise insulation.
Disconnect vacuum hose from combination valve at Secondary Air Injection (AIR) Solenoid Valve -N112-. See item 5.
Connect hand vacuum pump (VAG1390) at vacuum connection to combination valve.

Fig 1: Connecting Hand Vacuum Pump At Vacuum Connection To Combination Valve (Engine Code AFP)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Remove intake hose to combination valve at air filter upper part (arrow) and blow into it with light pressure.
Combination valve must close.

Fig 2: Removing Intake Hose To Combination Valve At Air Filter Upper Part (Engine Code AFP)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

NOTE: To disengage, compress the buttons at the hose coupling.

If the combination valve does not open or it is constantly open: