| Observe the following points to prevent injury to persons and/or damage to the injection and preheating system: |
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| Only disconnect and connect wires of the injection and preheating system - and high-voltage and measuring device wires - when the ignition is switched off. |
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| If the engine must be operated at starter speed, without it starting, e.g. during compression pressure testing, disconnect the 10-pin connector from the injection pump. After performing the work interrogate fault memory and erase → Vehicle diagnostic tester. |
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| Before disconnecting the battery determine the code of the radio fitted with anti-theft coding. |
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| Always switch off the ignition before disconnecting and re-connecting the battery. Otherwise the engine control unit may be damaged. |
| If test and measuring devices are required during test drives observe the following: |
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| Always secure the test and measuring devices on the rear seat and have a second person operate them there. If the test and measuring devices are operated from the front passenger seat, the passenger could be injured by the release of the front passenger airbag in the event of an accident. |
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