Secondary Air Injection (Air) Solenoid Valve, Checking, Without Vacuum Control: Procedure

• Hose connections properly sealed.

-- Remove the engine cover in direction of -arrows-.

Fig 1: Identifying Engine Cover

Courtesy of AUDI OF AMERICA, LLC

Left AIR Combination Valve

Fig 2: Identifying Secondary Air Hose -3-

Courtesy of AUDI OF AMERICA, LLC

-- Remove the plenum chamber bulkhead. Refer to LOCK CARRIER .

-- Remove the AIR hose -3- by pressing the release buttons.

Right AIR Combination Valve 

-- Free up the fuel line and the line to the Evaporative Emission (EVAP) canister on the air guide pipe.

-- Disconnect the connector -1- from the Mass Airflow Sensor -G70-.

-- Disconnect the vacuum line -3- from the air guide pipe.

-- Lay aside air guide pipe with connected crankcase ventilation hose -2- by loosening hose clamp -4- and opening clips -arrows-.

Fig 3: Disconnecting Connector On Mass Airflow (MAF) Sensor

Courtesy of AUDI OF AMERICA, LLC

Continuation for the Right (AIR) Combi-Valve

Fig 4: Identifying Right Secondary Air Injection (Air) Combination Valve

Courtesy of AUDI OF AMERICA, LLC

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

Continued For Both Sides 

Fig 5: Connecting An Appropriate Assisting Hose To Combination Valve

Courtesy of AUDI OF AMERICA, LLC

-- Connect the auxiliary hose -arrow- to the combination valve for AIR.

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

• The AIR combination valve must be closed and it must not be possible to blow through it.

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

• The AIR combination valve must open and it must be possible to blow through it.

-- If the switch point cannot be detected, replace AIR combi-valve. Refer to LEFT COMBINATION VALVE, REMOVING AND INSTALLING, WITHOUT VACUUM CONTROL , RIGHT COMBINATION VALVE, REMOVING AND INSTALLING, WITHOUT VACUUM CONTROL .