Land Rover Discovery 99my To 03my Electrical Library 3rd Edition Rover Manual

INTRODUCTION
1.6DISCOVERY SERIES II
HARNESS REPAIRS
Introduction
Two Land Rover harness repair kits are available. Range Rover (LM) harness repairs can 
be carried out using repair kit LRT-86-010. Range Rover (LP), Discovery Series II, and 
Freelander (01MY onwards) are covered by Harness Repair Kit LRT-86-010/1.
The Harness Repair Kits contain the following components to enable the technician to carry 
out Right First Time repairs: 
zCrimping pliers.
zWire cutter/stripping tool.
zHeat shrink tubing....

INTRODUCTION
DISCOVERY SERIES II 1.7
Repair Guidelines
The Harness Repair Kit includes an illustrated instruction booklet. However, there are 
additional repair guidelines that should be adhered to.
Twisted Pairs
Twisted pairs of wires (CAN bus, ABS wiring, etc.) can be repaired as required. When 
repairing a twisted pair of wires do not unwind the existing wires any more than necessary. 
Before completing the repair, replicate as closely as possible the original twisting pattern on 
any new wiring....

INTRODUCTION
1.8DISCOVERY SERIES II
Repair Methods
The following process should be used when carrying out a repair:
CAUTION: Before starting any work, ensure the vehicle battery has been 
disconnected. Work must not start on the vehicle for a further ten minutes. This 
allows the SRS and Satellite Navigation systems time to de-energise.
1. Using the cutter/stripping tool, cut the wire to be repaired and strip the required 
amount of insulation from the wire.
2. Slide an appropriately sized heat shrink...

INTRODUCTION
DISCOVERY SERIES II 1.9
ABBREVIATIONS
General
AAmpere
AAT Ambient Air Temperature
ac Alternating current
ABS Anti-lock Braking System
A/C Air Conditioning
ACE Active Cornering Enhancement
ATC Automatic Temperature Control
BBUS Battery Backed-Up Sounder
BCU Body Control Unit
Cav Cavity
Cct Circuit
CDL Central Door Locking
CKP Crankshaft Position
CMP Camshaft Position
Col Colour
db Decibels
dc Direct Current
DCU Diagnostic Control Unit
EAT Electronic Automatic Transmission
ECM Engine Control...

INTRODUCTION
1.10DISCOVERY SERIES II
ISO International Organisation for Standardization
LEVs Low Emission Vehicles
LH Left Hand
LHD Left Hand Drive
NAS North American Specification
PDC Park Distance Control
RH Right Hand
RHD Right Hand Drive
ROW Rest of World
SAI Secondary Air Injection
SLABS Self Levelling/Anti-Lock Braking System
SPE Single Point Entry
SRS Supplementary Restraint System
VVolt
VIN Vehicle Identification Number
W Watts 

INTRODUCTION
DISCOVERY SERIES II 1.11
HOW TO USE THIS DOCUMENT
Fuse details
Contains information on fuse functions and values and should be used together with the 
power distribution circuit diagrams to establish which systems share a common power 
supply and to ensure that correct value fuses are fitted.
Earth points and headers
Shows a plan view of the vehicle with location of all earth points. Supporting photographs 
and connector detail information appear in the Connector section.
Description and...

INTRODUCTION
1.12DISCOVERY SERIES II
Connector Details
This section is effectively an index of every electrical connector on the vehicle, including 
headers and eyelets. A page is dedicated to each connector, with the information presented 
in a standard format. The connector number is displayed on each page header to ease 
reference. Connector information comprises:
zConnector Number – The assigned number, prefixed C
zConnector Name – Usually derived from the component to which the connection is 
made....

INTRODUCTION
DISCOVERY SERIES II 1.13
Example – 9 pin connector
Where necessary a table listing the circuit reference numbers against a description of the 
model or features which may or may not be fitted, can be found at the beginning of the 
Connector section. A sample of a typical table is shown below:Cav Col Cct
2GALL
4GW7
4GB79
4GW90
5LGBALL
6GB7
6GW79
6GB80
8BALL
Cct Model or Feature
1 Premium ICE
2 Non Premium ICE
3Diesel
4Diesel Auto
5V8
6V8 Auto
7 Power Seats 

INTRODUCTION
1.14DISCOVERY SERIES II
FAULT DIAGNOSIS
General
When diagnosing an electrical fault follow the steps below:
1. Read the circuit description appropriate to the reported fault to ensure a good 
understanding of circuit operation.
2. Study the power distribution, fuse details and earth distribution diagrams and identify 
other circuits which share fuses and/or earth points. Check whether these circuits 
operate correctly.
3. Using the photographs contained in the Connector section, locate a...

INTRODUCTION
DISCOVERY SERIES II 1.15
WIRE COLOUR CODES
General
The following list contains the wire colour codes used on the vehicle harnesses.
Code Colour
BBlack
GGreen
KPink
LG Light green
NBrown
O Orange
P Purple
RRed
S Slate (Grey)
T Transparent
UBlue
WWhite
Y Yellow