Exhaust Flap Vacuum Diaphragm, Checking

Exhaust Flap Vacuum Diaphragm, Checking

Special tools, testers and auxiliary items required

• Hand vacuum pump (V.A.G 1390)

Test Sequence

- Disconnect hose on vacuum diaphragm for exhaust flap at rear muffler.

- Connect hand vacuum pump (V.A.G 1390) to vacuum diaphragm.





- Generate vacuum using hand vacuum pump.

• Linkage must move upward.

- Vent hand vacuum pump.

• Linkage must move downward.

If linkage does not move:

- Check linkage for ease of movement and check the vacuum diaphragm for leaks.