Turbocharger Vacuum Diaphragm, Checking

WARNING: This page is about a different car, the 2009 Volkswagen GTI and 2008 Volkswagen GTI. 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

The hose between the turbocharger, the wastegate bypass regulator valve -N75- and vacuum diaphragm must not be kinked.
The wastegate bypass regulator valve is OK.

Procedure

-- Remove the engine cover. Refer to ENGINE COVER .

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

Fig 1: Identifying Hand Vacuum Pump VAS 6213 Connected To Vacuum Diaphragm

Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Set the slide ring -1- on the hand vacuum pump -VAS 6213- to position -B- for "pressure".

Fig 2: Identifying Slide Ring Set To "Pressure" Position On Hand Vacuum Pump VAS 6213

Courtesy of VOLKSWAGEN UNITED STATES, INC.

CAUTION:

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

-- Operate the hand vacuum pump -VAS 6213- several times and observe the rods.

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

Fig 3: Identifying Linkage Movement

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Actuator lift is approximately 10 mm.

NOTE:

If the pressure cannot be raised using the hand vacuum pump -VAS 6213- or the pressure drops immediately, check the hand vacuum pump -VAS 6213- and connecting hoses for leaks. If no malfunction can be found: Replace the vacuum diaphragm. Refer to TURBOCHARGER VACUUM DIAPHRAGM .