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Checking ignition system
Safety precautions
To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:
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◆ Do not touch or disconnect ignition wiring when the engine is running or at starter speed.
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◆ Always switch off the ignition before connecting or disconnecting ignition system wiring. This also applies to HT cables and measuring instrument leads.
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◆ To operate the engine at starting speed without actually starting it (for example, to check the compression), unplug the connector from the power output stage for the ignition coils and the connectors from the injectors. After completing the work, interrogate the fault memory.
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◆ Always switch off the ignition before washing the engine.
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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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◆ For assisted starts with a rapid charging unit the maximum permissible voltage is 16.5 V and the maximum charging time is 1 minute.
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