Circuit and Terminal Descriptions

Circuit and terminal descriptions

BMW designates electrical circuits, including junctions and grounds, with unique designations, most of which follow the German DIN standard. See Table a. For example, if a relay terminal is labeled '30', it tells you that positive (+) voltage is supplied to that terminal at all times directly from the battery.

Electrical components are identified in the schematics using a letter followed by a number. For example, A6000 is the DME control module. The letter A identifies the component as an electronic control module. Table B lists the component alphacodes.

Table A. Electrical terminal designations (according to DIN 72 552 standard)







Table B. BMW electrical component designation