audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Exhaust System|Muffler > < Exhaust Pressure Regulator Vacuum Reservoir|Testing and Inspection
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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 (VAS 6213)

Test Sequence

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

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Connect the hand vacuum pump to the vacuum diaphragm.

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Generate vacuum using hand vacuum pump.

‹› Linkage must move toward front.

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Vent the hand vacuum pump.

‹› Linkage must move toward rear.

If linkage does not move:

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

Exhaust System|Muffler > < Exhaust Pressure Regulator Vacuum Reservoir|Testing and Inspection