HOW TO USE THE CIRCUIT DIAGRAMS
All of the information in this folder is intended for use with the
Electrical Reference Library booklet.
Connectors
Components
The circuit diagrams are presented with Power and Earth
distribution first, followed by individual circuits for each electrical
system on the car.
Power Distribution
The Power Distribution diagram shows the connections from the
battery to the engine and passenger compartment fuse boxes. It also
shows the internal circuitry of the fuse boxes.
The name, or a description of the component is shown. A dotted
outline indicates that the component is not shown in its entirety.
Header joints are identified by their corresponding connector
number with a numbered suffix to indicate the pin-out detail of the
wire, i.e. C289-1 identifies connector 289, pin number 1.
Wire insulation colour is identified in the normal way. Where
wires have a predominant colour with a secondary colour stripe,
the main colour is identified first, i.e. LGS - Light Green with a
Slate stripe.
Earth Points
Earth Distribution
The ground distribution section comprises a number of ‘Headers
and Splices’ tables. These are used in a similar manner to those in
Power Distribution; to narrow the search area by checking for fault
symptoms in associated circuits.
These fuse box details are followed by a ‘Headers and Splices’
section outlining the way in which internal harness splices and
header joints distribute power in the harnesses. This information
should be used during diagnosis of electrical faults to check for
symptoms in associated circuits and narrow down the search area.
Earth points are identified with an eyelet symbol and a connector
number, except where components are grounded through their
fixings, when only the eyelet is shown.
Line Types
Fuses and Diodes
Headers and splices
Header and splice tables present the joint(s) and wiring up to the
first component. Splices are identified by a number with an
alphabetical prefix and the wire colour.
This means the wire connects to another circuit.
Wire Attributes
Additional information (separated by a “,”) is shown alongside the
wire colour:
∑
Wire gauge - the cross-sectional area of the wire in square
millimetres. This is included to help you select the correct
wire during harness repair.
Fusible links (A) and current rated fuses (B), are identified as
shown.
The direction of the ‘arrow’ in a Diode symbol (C) indicates the
direction of current flow. The Zener Diode (D) prevents current
flow until a precise voltage is reached.
•
Wire length (Power & Earth Distribution only) - the length
of the wire in millimetres. This can be used to locate
internal harness splices; look for the shortest wire between
the joint and connector. For example, it can be seen that
C574-4 is 150mm from joint A82.
The ‘cup and ball’ symbol indicates the male and female halves of
the connector.
A.
B.
Plug on lead (fly lead), wired directly to the component.
Connector plugs directly into circuit.
| Categories | Land Rover, Land Rover Defender, Land Rover Discovery |
|---|---|
| Tags | Land Rover |
| Model Year | 1997 |
| Download File |
|
| Document Type | Electrical Troubleshooting Manual |
| Language | English, German |
| Product Name | Discovery, Defender, Range Rover Gearbox |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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