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Servicing injection system
General notes on injection
Servicing ignition part:
=> Repair group 28
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◆ The engine control unit is equipped with self-diagnosis. Before carrying out repairs and fault finding the fault memory must be interrogated. Also the vacuum hoses and connections must be checked (unmetered air).
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◆ Fuel hoses in engine compartment must only be secured with spring type clips. The use of clamp or screw type clips is not permissible.
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◆ Components marked with * are checked via the self diagnosis
, interrogating and erasing fault memory.
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◆ Components marked with **can be checked with the final control diagnosis => Page 01-89.
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◆ For trouble-free operation of the electrical components, a voltage of at least 11.5 V is necessary.
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◆ Do not use sealants containing silicone. Particles of silicone drawn into the engine, will not be burnt in the engine and damage the Lambda probe.
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◆ During some checks it is possible that the control unit will recognise and store a fault. Therefore after completing all checks and repairs the fault memory must be interrogated and if necessary erased => Page 01-64.
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◆ Vehicles with an airbag are fitted with a crash/fuel shut-off. It reduces the risk of a vehicle burning in the event of a crash in that the fuel pump is switched off by the fuel pump relay. At the same time this device improves the starting of the engine because as soon as the door is opened the fuel pump is activated to build-up pressure in the fuel system.
Safety precautions
Rules for cleanliness => Page 24-35
Technical data => Page 24-36
Checking intake system for leaks (unmetered air) => Page 24-108.
Checking engine operating mode => Page 24-138
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