| To prevent injuries to persons and/or damage to the injection and ignition system, the following must be observed: |
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| Do not touch or pull off ignition coils with output stage when engine is running or turning at starter speed. |
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| Switch off ignition before connecting or disconnecting injection and ignition system wiring as well as test instrument cables. |
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| If the engine has to be turned over at starting speed without it starting (e.g. compression test), first unplug the connectors from the ignition coils and the injectors. Read and clear event memory on completion of work. |
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| Always switch off ignition before cleaning engine. |
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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. |
| Note the following if testers and measuring instruments have to be used during a road test: |
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| Test and measuring instruments must always be secured to the rear seat and operated by a second person from this location. |
| If test and measuring instruments are operated from front passenger seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered. |
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