1. General rule: persons with a pacemaker are not allowed to work with the injection system and the ignition system associated with it.
2. General rule: when performing any work in the engine compartment, it is necessary, at a minimum, to turn off the ignition system, it is even better to disconnect the ground cable from the battery. To protect against possible accidental connection of the cable to the battery, the cable must be laid aside.
3. If the battery is disconnected, diagnostic system, radio security code (if this type of radio is installed) and other car devices that have memory lose information. For the radio, the code must be re-entered.
4. Depending on the type of anti-theft alarm system installed, it may turn on when the battery is disconnected. You can get more detailed information about this in the instructions for using the anti-theft alarm system. Familiarize yourself with it before disconnecting the battery.
5. Do not start the engine if the battery terminals are not properly secured.
6. Do not disconnect the battery while the engine is running.
7. The battery must be disconnected before charging.
8. Do not use a battery with a voltage of more than 12 V to start the engine.
9. Do not turn off the electronic control unit if the ignition is on.
10. Before docking the plug-in connection, check the condition of the terminals and the reliability of their mating. Check up also reliability of fixing of a spring.
11. Before carrying out welding work, disconnect the electronic control unit from the electrical circuit.
12. When checking the compression pressure, disconnect the connecting plug from the electronic control unit. This prevents the supply of fuel to the injection valves.
13. Do not use test lamps to test circuits and do not use wires to connect to ground.
14. The fuel system is constantly under pressure. This means that when the fuel lines or other parts of the system are disconnected, fuel can be released. In Opel auto repair shops, a special device is used to relieve pressure in the system. In the absence of such a device, a thick rag is applied to the connection and the nut is slowly unscrewed. Obviously, do not smoke or use an open flame or test light while working on the fuel system.
15. Before carrying out any work on the injection system and the ignition system associated with it, it is necessary to familiarize yourself with their design.
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