- do not disconnect the battery pack (AB) while the engine is running;
- before starting work on the fuel system, relieve the pressure in it, as it decreases on its own within a few hours after the engine is turned off;
- before checking the injection system, check the ignition system;
- disconnect and connect the plug connections (PC) of the ECU KSUD (undock/dock) only when ignition is off;
- monitor the completeness of the battery charge and the reliability of the connection of its terminals;
- do not use battery chargers to start the engine;
- to quickly charge the battery, you need to remove it from the car;
- do not expose the ECU to temperatures above +60°C;
- when measuring compression in cylinders, turn off the DME system ECU.
The engine power supply system includes a number of systems, the main ones being:
- air supply system;
- fuel supply system;
- integrated Engine Management System;
- exhaust gas release (discharge) system.
Examine the original source using the link on the website BMWMAN