Exhaust Flap Vacuum Diaphragm, Checking

Special tools and workshop equipment required 

• Hand Vacuum Pump VAS 6213

Procedure 

Fig 1: Identifying Exhaust Flap Vacuum Diaphragm, Checking

Courtesy of AUDI OF AMERICA, LLC

-- Remove the hose from the exhaust flap vacuum diaphragm on the rear muffler.

-- Connect the VAS 6213 at the vacuum diaphragm.

-- Operate hand vacuum pump.

Fig 2: Checking Vacuum Pump Linkage

Courtesy of AUDI OF AMERICA, LLC

• Linkage must move upward.

-- Vent hand vacuum pump.

• Linkage must move downward.

-- If the linkage does not move, make sure it is not stuck and check the vacuum diaphragm for leaks.