Use of electric wiring diagrams - OV00.01-U-1901-03RAA

MODEL 251.1 

Wiring diagrams 

• The wiring diagrams are assigned to the familiar service information. The systems are listed alphabetically with an indication of the service information in the "Search aid through all wiring diagrams"

OV00.01-U-1901RAA or A3 (paper version) to facilitate finding individual wiring diagrams.

• The wiring diagrams are filed in the respective service information arranged according to the PE number,

e.g.: PE07.61-U-2101RAA

PE07.61-U-2101RAB

Refer to the tables of contents of the particular service information for the order of the filed wiring diagrams in order to file supplements and to check that the wiring diagrams are complete,

e.g.: PE07.00-U-1100RAA Survey of wiring diagrams....

• The wiring diagrams are generated as system block diagrams or control module diagrams and structured as follows:

• System block diagrams

All the control modules belonging to the system (e.g. ESP), are represented as a block. Components and signals which act on the control modules either for system-related or function-related reasons, are shown with direction arrows.

• Control module diagrams

Control modules are represented complete with all connected components. The feed of the control units appears first.

The wiring diagrams also contain linkages of possible versions and functions.

Linkages, recognizable as versions, are framed and provided with an abbreviated designation/abbreviation.

The versions are designated with 1 and 2 in the case of a phased-in modification.

• The versions identified with the abbreviated designation "U..." are listed in the legends. Explanations regarding identifications of versions with abbreviations such as ESP, can be found in "Abbreviations for workshop literature" OV00.01-U-1001-27A  *(A4).

The signal and circuit designations used are explained in "Abbreviations of signal and circuit designations for wiring diagrams" OV00.01-U-1001-28RAA  *(A5).

• The vehicle ident end numbers or production breakpoint dates stated apply to the introduction of the main series. Pre-series vehicles may have a lower vehicle ident end number or an earlier start of production.
• Cable cross-sections may differ from that shown in the wiring diagrams.

Wiring diagram number 

Function diagram 

Cable identification 

The slash is deleted between base color and identifying color.

Fuse blocks 

Components and switches 

Cable colors: 

BK = black = schwarz

BN = brown = braun

BU = blue = blau

GN = green = grun

GY = gray = grau

PK = pink = rosa

RD = red = rot

TR = transparent = naturfarben

VT = violet = violett

WH = white = weis

YE = yellow = gelb

The symbol refers to connecting wiring diagrams or block diagrams.

• The feed of the Z connector sleeves is shown by means of an arrow pointing to the left, the outputs by means of arrows pointing to the right as follows:

  ← G2 Battery 

  + 

  → N3/10ME-SFI control module 1/10

• Special features in WIS presentation

In contrast to the presentation on paper, it is possible in the WIS to select certain areas (framed in red) and thus to jump to other documents or wiring diagrams.

• Selection of plug connections → Document: Arrangement and assignment of plug connections
• Selection of ground points → Document: Arrangement and assignment of ground points
• Selection of Z connector sleeves → Document: Arrangement and assignment of Z connector sleeves
• Selection of PE hands → Reference to connecting wiring diagrams
• Selection of Component designations → Document: Abbreviations of signal and circuit designations