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Checking ignition system
General notes on ignition system
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◆ Always switch off the ignition before connecting or disconnecting the battery, otherwise the engine control unit may be damaged.
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◆ The engine control unit is equipped with self-diagnosis.
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◆ A voltage of at least 11.5 V is necessary for satisfactory functioning of the electrical components.
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◆ In the case of some tests, a fault may be recognised and stored by the control unit. At the end of all tests and repairs, therefore, the fault memory should be interrogated and, if necessary, erased.
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◆ If the engine starts briefly and then stops after fault search, repair or tests on components, this may be because the immobiliser is blocking the engine control unit. The fault memory must then be interrogated and, if necessary, adaption carried out on the control unit.
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