A8L Quattro Sedan W12-6.0L (BSB) (2005)
Vacuum Pump: Testing and Inspection
Brake System Vacuum Pump, Checking
Special tools, testers and auxiliary items required
‹› Vehicle Diagnosis, Testing and Information System (VAS 505x)
Procedure
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Connect the (VAS 505x) to the diagnostic connector with the ignition switched off.
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Switch the tester on - arrow -.
The tester will now require up to 3 minutes to boot up.
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Switch on ignition
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Select operating mode: On the display, select "Vehicle On-Board Diagnostic".
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Select vehicle system: Select "engine electronics" on the display.
At the upper right of the screen, the control module identification and coding are displayed.
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Select diagnostic function: At this point, all diagnostic functions are available.
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Select "006 - Basic setting".
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Press buttons 0, 1 and 1.
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Confirm the input with the Q button.
Displayed at the bottom of the screen:
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Actuate the brake pedal multiple times with consistent force until the test activates.
Displayed at the bottom of the screen: