Turbocharger Vacuum Diaphragm, Checking

WARNING: This page is about a different car, the 2008 Volkswagen Jetta, 2008 Volkswagen GLI, 2007 Volkswagen Jetta, and 2006 Volkswagen Jetta. 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 the turbocharger over the wastegate bypass regulator valve must have continuity to the vacuum diaphragm.
Wastegate bypass regulator valve is OK.

Work Procedure

-- Remove the engine cover/upper air filter housing. Refer to ENGINE COVER/UPPER AIR FILTER HOUSING .

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

Fig 1: Connecting Hand Vacuum Pump VAS 6213 To Vacuum Diaphragm

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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 and observe the rods.

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

Actuator lift is approximately 10 mm.

Fig 3: Identifying Linkage Movement

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

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