Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
24 – Mixture preparation - injection
1 Safety precautions and rules for
cleanliness
1.1 General notes on self-diagnosis
♦ The engine control unit has a self-diagnosis capability. Before
carrying out repairs and fault finding, the event memory must
be interrogated. The vacuum hoses and connections must al‐
so be checked (unmetered air).
♦ Fuel hoses in engine compartment must only be secured with
spring-type clips. O-type clips or screw-type clips must not be
used.
♦ A voltage of at least 11.5 V is required for proper operation of
the electrical components.
♦ Do not use sealants containing silicone. Particles of silicone
drawn into the engine will not be burnt in the engine and will
damage the Lambda probe.
♦ The vehicles are fitted with a crash/fuel shut-off system. This
system is designed to reduce the risk of a vehicle fire after a
crash by deactivating the fuel pump via the fuel pump control
unit.
♦ At the same time, this system also improves the engine's start‐
ing performance. When the driver's door is opened, the fuel
pump is activated for 2 seconds in order to build up pressure
in the fuel system ⇒ page 2 .
♦ Use release tool -T40138- to unplug connectors that cannot
be accessed easily.
1.2 Safety precautions when using testers
and measuring instruments during a
road test
Note the following if testers and measuring instruments have to
be used during a road test:
WARNING
Accidents can be caused if the driver is distracted by test
equipment while road-testing, or if test equipment is not prop‐
erly secured.
Persons sitting in the front passenger's seat could be injured if
the airbag is triggered in an accident.
• The use of test equipment while driving causes distraction.
• There is an increased risk of injury if test equipment is not
secured.
♦ Test equipment must always be secured on the rear seat
with a strap and operated from the rear seat by a second
person.
Audi A8 2010 ➤
Simos direct petrol injection and ignition system (6-cyl. 3.0 ltr. TFSI 4-valve) - Edition 12.2011
1. Safety precautions and rules for cleanliness 1
To Next Page
Loading...
Need help?
General
