Use Of Wiring Diagrams - OV00.01-P-1901-03BBA

MODEL 453 

Wiring diagrams 

The wiring diagrams are assigned to the familiar function groups 00-91.

The circuit diagrams are filed according to PE number in each function group, e.g.:

• PE07.61-P-2101BBA
• PE07.61-P-2101BBB

The locations of electrical connectors, ground points and Z-end sleeves are shown in the following 3 documents:

• GF00.19-P-1000BBA Location and assignment of line and plug connectors
• GF00.19-P-2000BBA Location and assignment of ground points
• GF00.19-P-3000BBA Location and assignment of Z connector sleeves (wiring and plug connectors in wiring harness)

All electrical components are sorted alphabetically and listed according to the abbreviations in the "Search aid for all electrical components" OV00.01-P-1909BBA or OV00.01-P-1909BEA. A reference is made to the wiring diagrams in which the relevant component is explained completely.

Variants of a component or the subdivision of a component into several wiring diagrams are stated in the third column.

Example: 

M14/4 Charge socket lock, model 453.091/391/491 except code 908 (22 kW on-board charger) PE54.21-P-2154BEA

M14/4 Charge socket lock, model 453.091/391/491 with code 908 (22 kW on-board charger) PE54.21-P-2154BEB

Wiring diagram number 

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Kinds of wiring diagrams 

The wiring diagrams are prepared as function schematics, function/system diagrams, control unit diagrams or Z-end sleeve wiring diagrams, ground wiring diagrams and connector wiring diagrams.

• 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.

• Function/system diagrams

  All the components that are relevant to a function or system are shown in the wiring diagram.

• Control unit diagrams

  Control units are represented complete with all connected components. Control units with many connections can be subdivided into several wiring diagrams.

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

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

Function schematic 

1. Data bus interface
2. Direct interface
3. Symbols (components, control units)
4. Reference to further wiring diagrams

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Wire Identification 

1. Conductor cross section in mm²
2. Base color
3. Identification color

CAN bus presentation 

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LIN bus presentation 

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MOST bus presentation 

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Wire cross-sections of the vehicle may differ from the illustration in the wiring diagrams.

Wire Identification 

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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.

Fuse blocks 

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Components and switches 

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Variants 

The wiring diagrams can contain variants that are framed to identify them and provided with an abbreviation "U..." or "Code...", or are marked with a time limitation, a vehicle model designation, an engine model designation, a transmission model designation or a vehicle identification end number. The variants identified by the abbreviation "U..." or "Code..." are listed in the legends.

The vehicle identification end numbers or time production data stated apply to the market launch of standard production. Preproduction vehicles can have a lower vehicle identification end number or an earlier production breakpoint.

In case of changes that come up after the market launch of standard production, the variants can be designated with 1 and 2.

Logical combinations of variants are represented as follows:

• And/or combination

  Validity elements are presented one below the other; the variant is valid if at least one of the validity elements applies.

• And combination

Validity elements are presented indented one below the other; the variant is valid if all the validity elements apply.

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Signal and terminal designations 

The signal and circuit designations used are explained in the section "Abbreviations of signal and circuit designations for wiring diagrams" OV00.01-P-1001-28BBA.

Special features in WIS presentation 

In WIS it is possible to select certain areas in the wiring diagram and consequently to switch to other documents or wiring diagrams.

• Selection of electrical connections → Document: Location of line and plug connectors
• Selection of ground points → Document: Location of ground points
• Selection of Z-connector sleeves → Document: Location of Z-connector sleeves (line and plug connectors in wiring harness)
• Selection of PE hands → Reference to further wiring diagrams
• Selection of wiring diagram references without PE hands → Reference to further wiring diagrams
• Selection of component designations A and N → Document: Abbreviations of signal and circuit designations for wiring diagrams
• Selection of component designation A0 → Document: Use of wiring diagrams

Reference to further wiring diagrams (selection of PE hands) 

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Reference to further wiring diagrams (references without PE hands) 

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