Introduction

INTRODUCTION

Schematics
The schematics divide the entire vehicle electrical system into individual circuits. Interacting electrical components are shown on one common schematic.

Switches and other components are represented In such a way that their general layout and function are self-explicit. They are arranged on the sheet such that the current path can be followed from positive (top) to negative (bottom).

Important: The components and wires are not drawn to scale. For instance, a lead with a length of over 1m can be shown as a lead that is only a few cm long. To ensure clear arrangement , all connectors, lines branches and connected components from the fuses to the component and from the component to ground connection are not shown within the individual cells. If required. reference can be made to Fuse Details Fuse Details and Ground Distribution Ground Distribution where all lines are illustrated with all plug connections, line branches and connected components.

All circuit symbols used are listed and explained in Symbol Identification Symbols Identification

In Component Location Chart all important connectors, ground points and components are listed in tabular form. It provides a precise description of the component locations in the illustrated.

In Components Location Views the location of connectors and components which are difficult to locate are shown in line arts or illustrations. In Splice Location Views all splices are listed in numerical order and illustrations are provided to assist in locating splices on large harnesses. In Connector Views diagrams of connectors with more than 2 pins are illustrated.

Included in this ETM are foldout block diagrams. These are overviews of the entire system (EGS, ABS, AC, etc.) which help understand the relationship between various components and control unit of the system begin diagnosed.


EXAMPLE
General conventions can be explained based on the following schematic example.

Introduction: Schematic:

General Conventions
1. Switches and relays are always shown in rest position (e.g. K11).

2. A component shown in a dashed frame signifies that the component is illustrated only in part (e.g. P90 and P91).

3. A component shown in a completely drawn frame signifies that the component is illustrated in full (e.g. k11).

4. The dashed line between pin 8 and pin 6 of connector X293 indicates that both pins belong to connector X293.

5. The dashed line from fuse F1 to pin 8 of connector X293 shows the positive supply of relay K11. If required, refer to cell Fuse Details at fuse F1 for the complete line progressing with plug connections, line branches, wire colors and cross sections.

6. The dashed line with an arrow at splice X452 indicates that several wires lead to splice X452. All lines leading to the connection are illustrated in Central Body Electronics (ZKE). An interrupted line with an arrow indicates that only this one wire leads to another circuit.

7. The dashed line from pin 4 of connector x293 to ground X493 shows the ground supply for relay K11. If required, refer to Ground Distribution at ground X493 for the complete line progression with all plug connections, line branches, wire colors, and cross sections.

8. The interrupted line from splice X452 with an A in the open arrow is continued on Wiper/Washer Module

Termination of wire 4 VI/SW from splice X452 with a wavy line indicates that the wire is continued on the opposite page.