Audi A8 2003 Workshop Manual page 141

– Switch on tester -arrow-.
The tester may need up to 3 minutes before it is ready for oper‐
ation.
– Switch on ignition.
– Select mode: Press the button on the display for "Vehicle self-
diagnosis".
– Select vehicle system: Press the button for "Engine electron‐
ics".
The control unit identification and coding will appear at the top
right of the display.
– Select diagnosis function (all diagnosis functions are available
at this stage).
– Select "006 - Basic setting" on the display.
– Press buttons ,
0 1
– Confirm entry with
Q
The following information will appear at the bottom of the display:
Basic setting
– Firmly depress the brake pedal several times in succession
until the test is activated.
The following information will appear at the bottom of the display:
Basic setting
Do not press the brake pedal again once the test has been acti‐
vated.
The vacuum pump for brakes - V192- supplies vacuum to the
brake servo. The diagnosis of the brake servo system runs in the
control unit at the same time.
The system passes the test if the pressure in the brake servo
reaches the shut-off threshold within the time limit set by the di‐
agnostic function.
The following information will appear at the bottom of the display:
Basic setting
– You can cancel or exit from this mode by pressing the
button.
to
and for Measured value block.
1
key.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Brake system - Edition 03.2013
Not operated
Pump off
xxx mbar
Test off
Not operated
Pump on
xxx mbar
Test on
with respect to the correctness of information in this document. Copyright by AUDI AG.
Not operated
Pump off
xxx mbar
Syst. OK
Go
12. Electric vacuum pump for brakes V192
Audi A8 2003 ➤
135