Turbocharger Vacuum Diaphragm, Checking

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 Audi A3, 2012 Audi A3, 2011 Audi A3, 2010 Audi A3, and 2009 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Hand Vacuum Pump VAS 6213

Test conditions:

Hose from exhaust turbocharger over wastegate bypass regulator valve -N75- must have continuity to vacuum diaphragm.
Wastegate bypass regulator valve OK.

Procedure:

-- Remove the engine cover -arrows-.

Fig 1: Identifying Engine Cover, Removal

Courtesy of AUDI OF AMERICA, LLC

-- Connect the VAS 6213 to the vacuum diaphragm -arrow-.

Fig 2: Connecting Hand Vacuum Pump VAS 6213 To Vacuum Diaphragm

Courtesy of AUDI OF AMERICA, LLC

-- Adjust slide ring -1- on VAS 6213 to -B- position for "Pressure".

Fig 3: Adjusting Slide Ring On Hand Vacuum Pump VAS 6213 To Position For "Pressure"

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

The pressure must not exceed 750 mbar. If the pressure is exceeded, the vacuum diaphragm can be damaged.

-- Operate the VAS 6213 several times; watch the linkage while doing this.

The linkage -A- must move approximately 300 mbar and be at approximately 700 mbar at end position.

Actuator lift is approximately 10 mm.

Fig 4: Identifying Linkage Movement

Courtesy of AUDI OF AMERICA, LLC

NOTE:

If pressure cannot be raised with VAS 6213 or pressure drops immediately, check VAS 6213 and connecting hoses for leaks. If no fault is detected: replace the vacuum diaphragm. Refer to TURBOCHARGER VACUUM DIAPHRAGM .