audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Catalytic Converter > < Exhaust Flaps, Checking|Page 6076
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Exhaust Pressure Regulator Vacuum Solenoid: Testing and Inspection

Exhaust Flap Vacuum Diaphragm, Checking

Special tools, testers and auxiliary items required

‹› Hand vacuum pump (V.A.G 1390)

Test Sequence

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

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

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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.

Catalytic Converter > < Exhaust Flaps, Checking|Page 6076