| Note the following if testers and measuring instruments have to be used during a test drive: |
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| Test equipment must always be secured on the rear seat and operated from that position by a second person. |
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| If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, the person sitting in this seat could be seriously injured when the airbag is triggered. |
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| Note the following to avoid possible injury and/or the destruction of electrical and electronic components: |
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| Always switch off the ignition before connecting or disconnecting injection or ignition system wiring or tester cables. |
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| If the engine is to be operated at cranking speed without it starting (e.g. compression test), unplug the connectors from the ignition coils and injectors. |
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| Certain tests may lead to a fault being detected by the control unit and stored. The fault memory should therefore be interrogated and (if necessary) erased after completing all tests and performing any repair work. The readiness code must be generated after erasing the fault memory → Chapter. |
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| Always switch off the ignition before cleaning 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. |
WARNING | The fuel system is pressurised. Wrap a cloth around the connection before opening the system. Then dissipate pressure by carefully unfastening the connection. |
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