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Servicing ignition system
General notes to ignition system
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◆ Only the components which specifically relate to the ignition system are dealt with here. For the other components of the injection and ignition system => Repair group 24.
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◆ Disconnecting and connecting the battery must only be done with the ignition switched off, otherwise the engine control unit could be damaged.
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◆ The engine control unit is equipped with self diagnosis.
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◆ Components marked with * are checked via the self diagnosis
, interrogating and erasing fault memory.
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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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◆ 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 01-6
, interrogating and erasing fault memory
Safety precautions => Page 28-6
Test data, spark plugs => Page 28-7
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