A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Vacuum Pump: Testing and Inspection
Brake System Vacuum Pump Checking
Special tools, testers and auxiliary items required
‹› Vehicle diagnostic, testing and information system ( VAS 5051)
‹› Diagnosis lead (VAS 5051/1) or diagnosis lead (VAS 5051/3)
Procedure
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With the ignition switched off, connect the vehicle diagnostic, testing and information system (VAS 5051) to the diagnostic connection with
diagnosis lead (VAS 5051/1) or diagnosis lead (VAS 5051/3).
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Switch on the tester - arrow -.
The tester may need up to 3 minutes before it is ready for operation.
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Switch on the ignition.
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Select mode: Press button on display for "Vehicle self-diagnosis ".
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Select vehicle system: Press button for "01 - Engine electronics ".
The control module identification and coding will appear at top right of display.
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Select diagnosis function (all diagnosis functions are available at this stage).
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Select "04 - Basic setting" on display.
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Press buttons 0, 0 and 8.
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Confirm entry with Q key.
The following information will appear at the bottom of the display:
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Firmly depress the brake pedal several times in succession until test is activated.
The following information will appear at the bottom of display: