Introduction

INTRODUCTION

INTRODUCTION This manual is intended for use by trained Land Rover technicians as an aid to diagnosing electrical concerns. This manual is organized into sections, with most sections containing circuit diagrams. Each section has a unique alpha—numeric code that will normally remain the same from year to year. For example, the Headlights circuit is in Section H1, with the first page of the section numbered H1—1. The following pages of this section will be numbered H1-2, H1-3, H1-4, etc. The manual does not contain any information concerning removal, refit or overhaul of electrical components or harnesses. These details are contained in the Workshop Sf ho oublashontinc routing: forms the basis Circuit Diagrams System Diagnosis Flow Charts Component Location Table Component Locations Views Additional information, such as Circuit Operation, is also contained in the manual to aid in your understanding of how the different circuits operate.

DESCRIPTION OF MANUAL

Circuit Operation And Diagram The Circuit Operation information at the beginning of the section will give you an overview of how the circuit works.

The Circuit Diagrams should always be your starting point in using this Electrical Troubleshooting Manual. The diagram shows the electrical current paths when a circuit is operating properly. It is essential to understand how a circuit should work before trying to figure out why it doesn’t. Diagrams are shown with the Ignition Switch in the OFF position and other switches in the OFF or ‘at rest’ position. Notes are provided after certain switches to clarify switch positions. Abbreviations found in the notes are explained in the Abbreviation Table found in the SYMBOLS section of this chapter. Circuit Diagrams (schematics) break the entire electrical system into individual circuits. Electrical components that work together are shown together.

Each diagram is arranged so current flows from positive, at the top of the page, to ground, at the

bottom of the page. The ‘power’ labels at the top of a fuse show when the Battery, Main Light Switch, or Ignition Switch supplies power to that fuse. Wires that connect to another circuit are shown with an arrowhead pointing in the direction of current flow. The name of the circuit that shares the wiring is provided for reference. Wire Colour charts are no longer provided on each circuit page. One chart is provided in the SYMBOLS section of this chapter. ‘See Fuse Details’ means there are more connections to other circuits that are not shown. All such shared circuits are shown on the Fuse Details diagrams. ‘See Ground Distribution’ means there are more shared ground circuits which are shown on the Ground Distribution diagrams. No attempt is made on the diagrams to represent components and wiring as they physically appear on the car. For example, a long length of wire is treated no differently in a diagram from one which is only a few centimeters long. The number of cavities for each connector is listed in the Component Location Table rather than illustrated. Similarly, switches and other components are shown as simply as possible, with regard to function only.