Control Line To Turbocharger, Checking

CAUTION:

When routing the vacuum lines, make sure they are not kinked, twisted or pinched. They could disable the vehicle.

Special tools and workshop equipment required

Hand Vacuum Pump VAS6213

-- Remove the hose on the center connection for the Wastegate Bypass Regulator Valve -N75- -arrow in I- as well as from the turbocharger vacuum diaphragm -arrow in II-.

Fig 1: Identifying Turbocharger Wastegate Bypass Regulator Valve/Vacuum Diaphragm

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Seal off the opening in the hose with a suitable blind plug.

NOTE:

Do not use threaded bolts or pins.

-- Connect the Hand Vacuum Pump VAS6213 to the other end of the hose and generator a vacuum of 0.6 bar.

-- Watch the pressure gauge on the Hand Vacuum Pump VAS6213 for approximately 30 seconds (sec.).

The vacuum must not drop.

If the vacuum drops:

-- Replace the vacuum hose.

If the vacuum does not drop:

-- Reconnect the vacuum hoses.