(Use Of Wiring Diagrams - OV00.01-P-1901-03FBA)

Model 205

up to model year 2019

Model 253 (except 253.99)

up to model year 2020

Wiring diagrams

The wiring diagrams are filed in the respective function group according to the PE number,
e.g.:PE07.08-P-2101FBA

The wiring diagrams are prepared as function schematics, control unit diagrams and solder point wiring diagrams, ground wiring diagrams and connector wiring diagrams, and are structured as follows:
Function schematics

The control units and electrical components required for the function are shown as symbols. The functional connections are realized by direct lines or by the data bus.

Control unit diagrams

Control units are represented complete with all connected components.

Solder point wiring diagrams, ground wiring diagrams and connector wiring diagrams

Solder points, ground points and electrical connection which are not shown completely in any control unit diagram, are shown here complete with all connected components.

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.

The variants identified by the abbreviation "U..." or "Code..." are listed in the legends. Explanations regarding identification of variants with abbreviations such as ESP can be found in "Abbreviations for Workshop Literature" OV00.01-P-1001-27A.

The used signal and terminal designations are explained under "Abbreviations of signal and circuit designations for wiring diagrams" OV00.01-P-1001-28FBA *(A5).

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

Wiring diagram number

Courtesy of MERCEDES-BENZ USA

Function schematic

Courtesy of MERCEDES-BENZ USA

The slash is deleted between base color and identifying color.

Wire Identification

Courtesy of MERCEDES-BENZ USA

Fuse blocks

Courtesy of MERCEDES-BENZ USA

Components and switches

Courtesy of MERCEDES-BENZ USA

Wire colors:

BK = Black

BN = Brown

BU = Blue

GN = Green

GY = Gray

OG = Orange

PK = Pink

RD = Red

TR = Transparent

VT = Violet

WH = White

YE = Yellow

The symbol → refers to further wiring diagrams.

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 electrical connection → Document: Location and assignment of electrical connection
Selection of ground points → Document: Location and assignment of ground points
Selection of Z-connector sleeves → Document: Location and assignment of Z-connector sleeves
Selection of PE hands → Reference to further wiring diagrams
Selection of → document:

Component designations Abbreviations of signal and circuit designations

CAN bus presentation

CAN B interior CAN

CAN C drive train CAN

CAN D diagnostic CAN

CAN EHB chassis CAN