Exhaust turbocharger vacuum diaphragm, checking

Special tools, testers and auxiliary items required

Fig 1: Identifying Hand Vacuum Pump VAS 6213

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Test conditions:

Hose from exhaust turbocharger over Wastegate Bypass Regulator Valve N75 must have continuity to vacuum diaphragm.
Wastegate Bypass Regulator Valve N75 OK.

Work procedure:

Fig 2: Separating Electrical Connector

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 3: Connecting Hand Vacuum Pump VAS 6213 To Vacuum Diaphragm

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 4: Setting Slide Ring On Hand Vacuum Pump VAS 6213 To Position For "Pressure" or "Vacuum"

Courtesy of VOLKSWAGEN UNITED STATES, INC.

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

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

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

Fig 5: Identifying Linkage Movement

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Actuator lift is approx. 10 mm.

NOTE:

If pressure cannot be raised with Hand Vacuum Pump VAS 6213 or pressure drops immediately, check Hand Vacuum Pump VAS 6213 and connecting hoses for leaks. If no malfunction can be found: Replace vacuum diaphragm → Vacuum diaphragm for turbocharger, removing and installing .