| General notes on injection |
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| The control unit for the fuel injection and ignition system is equipped with self-diagnosis. Before carrying out repairs and fault finding, the fault memory must be interrogated → Chapter. Also, the low pressure hoses and connections must be checked (infiltrated 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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| Only disconnect and connect the battery with the ignition switched off, otherwise the engine control unit may be damaged. |
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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 probes. |
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| If the engine starts, runs for a short period and then stops, after fault finding, repairs or component tests, then the fault may lie with the immobiliser blocking the engine control unit. The fault memory must be interrogated and, if necessary the control unit matched → Chapter; Functions and components: adapting |
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| In some tests the control unit may detect and store an error. Therefore, the fault memory must be interrogated and deleted if necessary, after all tests and repairs have been completed → Chapter |
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| Vehicles with an airbag are fitted with a crash/fuel shut-off. This system 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 provides better starting performance. When the 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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