How to use schematic diagrams (Audi A4 B6)

The various basic diagrams of the Audi A4 currently form a whole folder of papers on 461 pages. They are distributed in 53 separate packages, each package, depending on the complexity of the unit or block, covers up to two dozen pages or more. The number of diagrams is constantly increasing, so their reproduction would make our book too voluminous.

If you need a corresponding circuit diagram when working with any block, unit or module, order it. We will only show the principle of constructing circuits using individual examples.

Each schematic diagram shows the name and serial number of the diagram, a picture of the fuse box and the location of the relay. The gray field indicates the connection to the positive potential (relay board), the lower line means the mass. If there is an arrow on the upper gray field that is directed to the left, it means that the diagram on this sheet continues the diagram given on the previous sheet. If there is an arrow on the upper gray field that is directed to the left, it means that the diagram continues on the following sheets. If there are no arrows on the sheet, it means that the diagram consists of only one sheet.

Capital letters on wires indicate continuation on the next schematic diagram. Part designation on the wire indicates that the wire goes to this part. The diagram provides a list of parts. The letter S denotes fuses, the letter T denotes detachable connections. The black squares with white numbers indicate relay numbers. The numbers in small print near the wires indicate the cross-section of the wires in mm², and the color corresponds to the actual color of the wire insulation.