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Audi Workshop Service and Repair Manuals

Vacuum Pump, Brakes|Service and Repair > < Vacuum Brake Booster|Description and Operation|Page 5147
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Vacuum Pump: Testing and Inspection

 

Brake System Vacuum Pump, Checking 

Test Procedure

 

-

Drive vehicle onto lifting platform, switch engine off.

-

Start engine.

^

While the engine is being started the brake system vacuum pump V192 (located on subframe in front of steering box, left side) should run
briefly.

-

A second person has to touch the pump by hand to check whether it is running.

If brake system vacuum pump V192 does not run:

-

Check fault memory in the engine control module.

Vacuum Pump, Brakes|Service and Repair > < Vacuum Brake Booster|Description and Operation|Page 5147