1. BMW car circuit diagram features
BMW cars have many functions and a large number of electronic devices, resulting in a huge automotive circuit diagram system. However, the BMW circuit diagrams are composed of independent systems. As long as these systems are broken by some rules, the BMW circuit diagram can be easily read.
2. BMW Automotive Circuit System Classification
The circuit diagrams of each electronic control system of the BMW car system communicate with each other and share resources through the bus, so each system will give a bus connection diagram. In order to facilitate the understanding of the composition of the relevant system, the input/output maps are also given in the BMW car system, using different colors to distinguish the sensors and actuators on the control unit. Each system of the BMW car system also gives the system circuit diagram, which is the system block diagram mentioned above. The system circuit diagram is much more complicated than the input/output diagram display, and the basic connection of the components as well as the grounding and power connection can be seen. Finally, similar to other models, detailed motor circuit schematics will be given. In summary, the circuit diagrams of various BMW systems can be divided into bus connection diagrams, input and output diagrams, system circuit diagrams and circuit schematic diagrams.
Bus connection diagram
Circuit schematic
3. BMW car system circuit diagram wire color
The original circuit diagram in the BMW ISTA system is basically the same as the Volkswagen car system. The module is gray, and the dotted line module indicates that the module is not fully displayed in the circuit diagram of this page. The circuit direction also does not cross each other from top to bottom. However, the line color representation method is different from that of the Volkswagen car. In the BMW original circuit diagram, there are only three color lines of red, brown and black. These three line colors have nothing to do with the color of the wire itself, but indicate a signal or a connecting line. Red lines indicate power lines, brown lines indicate ground lines, black lines indicate internal connections, or connections to other modules.
In addition to the wire color of the text format, the color of the wire itself has a color mark in a rectangular box. The distribution of the color markers in the rectangle shows the true wire color.
The BMW car system circuit diagram uses color squares and lines to distinguish sensor inputs and actuator outputs, as well as body bus and MOST buses.
4. BMW car circuit diagram symbol
The BMW car circuit symbol follows the European car standards, but there are differences.
5. BMW car system reading examples
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