Audi A3 2004 Direct Petrol Injection and Ignition System Workshop Manual
List of Workshop Manual Repair Groups
Repair Group 24 - Mixture preparation - injection 28 - Ignition system
Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed.
General notes on self-diagnosis
♦ The engine control unit has a self-diagnosis capability. Before carrying out repairs and fault finding the fault memory must be interrogated. The vacuum hoses and connections must also be checked (unmetered air).
♦ Fuel hoses in engine compartment must only be secured with spring-type clips. Clamping-type 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 relay.
♦Protected bysame time, by AUDI AG. AUDI AG does not guarantee orengine’sliability At the copyright. Copying for systemcommercial purposes, in part accept any start‐ this private or also improves the or in whole, is not permitted unless authorised ing respect to the correctness of information in this document. Copyright by AUDI AG. with 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.
Repair Group 24 - Mixture preparation - injection 28 - Ignition system
Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed.
General notes on self-diagnosis
♦ The engine control unit has a self-diagnosis capability. Before carrying out repairs and fault finding the fault memory must be interrogated. The vacuum hoses and connections must also be checked (unmetered air).
♦ Fuel hoses in engine compartment must only be secured with spring-type clips. Clamping-type 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 relay.
♦Protected bysame time, by AUDI AG. AUDI AG does not guarantee orengine’sliability At the copyright. Copying for systemcommercial purposes, in part accept any start‐ this private or also improves the or in whole, is not permitted unless authorised ing respect to the correctness of information in this document. Copyright by AUDI AG. with 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.
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