Land Rover Discovery Series Ii 2003my Electrical Circuit Diagrams 3rd Edition Nas Rover Manual

							Electrical Circuit Diagrams
DiscoveryLRL 0553NAS
LRL 0553 NDECD A4 ENG/ENX COL  22/2/02  12:18 pm  Page 3 
						

							Electrical Circuit Diagrams
Publication Part No. LRL 0553NAS(3)
Published by Land Rover
© 2002 Land Rover
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form, electronic, mechanical, recording or other means without prior written permission from Land Rover. 
						

							COLOUR CODES
DRAADKLEURCODES CODES DES COULEURS DES FILS KABELFARBCODES
CODICI COLORI DEI CAVI CODIGOS DE COLORES DE LOS CABLES CÓDIGOS DAS CORES DOS FIOSCODE
COLOUR
CODE
KLEUR
CODE
COULEUR
CODE
FA RBE
CODICE
COLORE
CODIGO
COLOR
CÓDIGO
COR
B BLACK B ZWART B NOIR B SCHWARZ B NERO B NEGRO B PRETO
G GREEN G GROEN G VERT G GRÜN G VERDE G VERDE G VERDE
K PINK K ROZE K ROSE K ROSA K ROSA K ROSA K ROSA
LG LIGHT GREEN LG LICHTGROEN LG VERT CLAIR LG HELLGRÜN LG VERDE CHIARO LG VERDE CLARO LG VERDE CLARO
N BROWN N BRUIN N BRUN N BRAUN N MARRONE N MARRON N CASTANHO
O ORANGE O ORANJE O ORANGE O ORANGE O ARANCIONE O NARANJA O LARANJA
P PURPLE P PAARS P VIOLET P LILA P PORPORA P PURPURA P ROXO
R RED R ROOD R ROUGE R ROT R ROSSO R ROJO R VERMELHO
S SLATE (grey) S LEIGRIJS S GRIS S GRAU S ARDESIA (grigio) S PIZARRO (gris) S CINZENTO
T
UTRANSPARENT
BLUET
UTRANSPARANT
BLAUWT
UTRANSPARENT
BLEUT
UTRANSPARENT
BLAUT
UTRASPARENTE
BLUT
UTRANSPARENTE
AZULT
UTRANSPARENTE
AZUL
WWHITE WWIT WBLANC WWEISS W BIANCO W BLANCO W BRANCO
Y YELLOW Y GEEL Y JAUNE Y GELB Y GIALLO Y AMARILLO Y AMARELO 
						

							CONTENTS
3
1 POWER DISTRIBUTION
............................................  6
Engine Compartment Fuse Box ...........................................  6
Passenger Compartment Fuse Box  ...................................  10
2 EARTH DISTRIBUTION
...........................................  14
3 ANTI-THEFT ALARM
................................................  20
4 CENTRAL DOOR LOCKING
....................................  24
5 WINDOWS
....................................................................  28
Front .................................................................................  28
Rear ..................................................................................  30
6 SUNROOF
.....................................................................  32
7 DOOR MIRRORS
.......................................................  34
Folding ..............................................................................  36
8SEATS
............................................................................  38
Heated ..............................................................................  42
10 DIAGNOSTIC SOCKET
.............................................  44
11 BODY CONTROL UNIT
............................................  46
15 CHARGING AND STARTING
.................................  50
V8 .....................................................................................  50
20 ENGINE MANAGEMENT SYSTEM
.......................  52
V8 .....................................................................................  52
22 COOLING FANS
..........................................................  56
25 SHIFT INTERLOCK
....................................................  58
31 CRUISE CONTROL
....................................................  60
32 ELECTRONIC AUTOMATIC TRANSMISSION
. 62
33 ACTIVE CORNERING ENHANCEMENT (ACE)
. 64
34 SELF LEVELING AND ANTI-LOCK 
BRAKING SYSTEM (SLABS)
.................................  66
35 ANTI-LOCK BRAKING SYSTEM (ABS)
.............  70
36 SUPPLEMENTARY RESTRAINT SYSTEM 
(SRS)
..............................................................................  74
38 AIR CONDITIONING
.................................................  76
39 HEATER
.........................................................................  80
40 HEATED FRONT SCREEN
.......................................  82
40 HEATED REAR WINDOW
.......................................  84
42 WIPERS AND WASHERS
.......................................  86
Front .................................................................................  86
Rear ..................................................................................  88
43 EXTERIOR LAMPS
....................................................  90
Head, side and tail lamps ..................................................  90
Headlamp levelling  ...........................................................  92
Lights on alarm  ................................................................  94
Direction indicator lamps\hazard warning  ........................  96
Brake and reverse lamps  ..................................................  98
Fog lamps - Front  ...........................................................  100
Fog lamps - Rear  ............................................................  102
44 INTERIOR LAMPS
.................................................... 104
46 INTERIOR ILLUMINATION
................................... 106
47 INSTRUMENTS
......................................................... 110
48 CLOCK
........................................................................... 114
48 HORN (S)
..................................................................... 116
49 ACCESSORY SOCKET
............................................. 118
49 CIGAR LIGHTER
....................................................... 120
50 AUDIO SYSTEMS
..................................................... 122
Base and mid line  ............................................................ 122
High Line  ......................................................................... 124
55 NAVIGATION SYSTEMS
........................................ 128
60 HEADER JOINTS
....................................................... 132
65 SPLICES AND CENTRE TAPS
.............................. 142
75 PARK DISTANCE CONTROL (PDC)
................... 148
80 TRAILER SOCKET
.................................................... 150 
						

							HOW TO USE THE CIRCUIT DIAGRAMS
4
HOW  TO US E THE  CIRCUIT DIAGRAMSAll of the information in this publication is intended for use in 
conjunction with the Electrical Library, which can be found on 
RAVE.
The circuit diagrams are presented with Power and Earth distribution 
first, followed by individual circuits for each electrical system on the 
vehicle.
Power Distribution
The Power Distribution diagram shows the connections from the 
battery to the engine, passenger, and where applicable, rear fuse box. 
It also shows the internal circuitry of the fuse boxes.
The fuse box details are followed by independent functionally specific 
circuits and then a splices and centre taps section outlining the way in 
which internal harness splices and centre taps 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 Distribution
The earth distribution section comprises a number of Headers and 
Splices circuits. 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.Splices and centre taps
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.
The splice information shown on individual system circuits is not 
complete. Always refer to the splices circuit for complete 
information on each splice.
Wire length (Power & Earth Distributtion only)
The length of the wire is shown 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 C0580-7 is 
1555mm from joint A35.
Connectors
Header joints are identified by their corresponding connector number 
with a numbered suffix to indicate the pin-out detail of the wire, i.e. 
C0292-1 identifies connector 292, pin number 1. Wire insulation 
colour is identified in the normal way. Where wires have a 
predominant colour with a secondary colour tracer, the main colour is 
identified first, i.e. LGS - Light Green with a Slate tracer.Line Types
This denotes the wires are a twisted pair.
These page break symbols indicate the circuit continues on later 
pages.
The cup and ball symbol indicates the male and female halves of 
connector.
A. Plug on lead (Flylead) wired directly to the component.
B. Connector plugs directly into component.M86 5963
C0580-7
COMPARTMENT (P101) FUSE BOX-PASSENGER
C0355-3
FRONT (B100) LAMP-INTERIOR-
A35
P,0.5D,1555
P,0.5D,770
A35 (P) ROOF
C0356-1
LAMP-INTERIOR-REAR (B104)
P,0.5D,940
C0292-8
C0292-3 C0292-2
K,0.5D,1275 K,0.5D,1430
K,0.5D,1295
C0932-1
C0429-14C0256-54
TRANSMISSION (D123) ECU-ELECTRONIC AUTOMATIC
CENTRAL CONTROL UNIT (CCU) (D170)DCU-AIRBAG (D171) HEADER 0292 (K109)
M86 5964
M86 5967
C0947-5 C0947-24
B,MAC RY,0.5
M86 5968
C0263-3 C0263-4
SWITCH-WINDOW-CONSOLE-RH (S144)
WR,2.0
WU,2.0
B A 
						

							HOW TO USE THE CIRCUIT DIAGRAMS
5
Components
The name or description of the component is shown. A dotted outline 
indicates that the component is not shown in its entirety.Earth points
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.Fuses and Diodes
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.M86 5965
8.5 AMP
C0205-2 C0205-1
PUMP-FUEL (M151)
B,2.0 WP,2.0
M86 5966
C0550-3
0550 (K108) HEADER-EARTH
B,1.5D
C1971-1
B,2.0
C0341-5
ECU-WINDOW LIFT (D118) 
						

							POWER DISTRIBUTION 
Engine Compartment Fuse Box
Discovery Series II (LHD)6
1
POWER DISTRIBUTION
Engine Compartment Fuse Box
VWR102160-A-01
(TD5)
40 AMP
LINK 5FUSE 7
FAN (R117) RELA Y-COOLING -AIR CONDITIONING (A/C) (R181)RELAY-COMPRESSOR CLUTCH
FUSE 5LINK 6 FUSE 6FUSE 8
SCREEN (R208) RELAY-HEATED FRONTRELAY-POWERW ASH (R134) LAMP (R130) RELAY-FRONT FOG
LINK 4 FUSE 4 FUSE 3
40 AMP 40 AMP
100 AMP20 AMP50 AMP 50 AMP 15 AMP10 AMP
87 A
87
86 85 3087 A
87
86 85 3087 A
87
86 85 30
87A
87
86 85 3087A
87
86 85 30
(V8)
(V8) (TD5)
(V8)(TD5)(V8)(V8)(TD5)
A1 B1 C1
C05 77-1
C0793-9 C0067-28 C0229-28 C0034-1C0581-2
C0583-5
C0581-1 C0584-5
C0658-4 C0116-2
C0637-29
C0975-30 C0975-30
C0636-31C0005-1 C0255-5 C0751-5 C0253-5 C0751-5C0658-29C0116-2 C0661-12C0246-2 C0247-1 C0662-12C0828-1 C0663-4 C0285-18
C0578-2 C0578-5C05 70-6 C0570-7 C0578-1 C0578-3
C0570-2 C0573-11C0576-5 C0576-4 C0576-3 C0572-3 C0573-8 C0573-17C0578-7 C0573-18C0574-2
C0826-1C0574-4 C0577-2
NOT USED (V101)
CONTROL (ATC) (D160) ECU-AIR TEMPERATURE
MODULE (ECM) (D131) ENGINE CONTROL COMPARTMENT (P101) FUSE BOX-PASSENGER
COMPARTMENT (P101) FUSE BOX-PASSENGER
COMPARTMENT (P101) FUSE BOX-PASSENGER
MODULE (ECM) (D131) ENGINE CONTROL FAN-1 (M102) MOTOR-COOLING DIODE (G126)
(ECM) (D131) ENGINE CONTROL MODULE
SEAT-LH (R209) RELAY-POWERSEAT-RH (R210) RELAY-POWER (ECM) (D131) ENGINE CONTROL MODULE DIODE (G126) SCREEN-LH (H114) ELEMENT-FRONT
SCREEN-RH (H113) ELEMENT-FRONT
UNIT (BCU) (D162) BODY CONTROL UNIT (BCU) (D162) BODY CONTROL FUSE BOX-ENGINE COMPARTMENT (P108)
NOT USED (V101)UNIT (BCU) (D162) BODY CONTROL
WASH (M156) PUMP-POWER 0285 (K109) HEADER
GENERATOR (M100) ALTERNATOR/
GO,0.5D,695 GO,0.5D,1935 BG,1.0D,2390
NP,3.0,685 BS,0.5D,745
NP,3.0,685 UP,1.5D,860
PK,3.0,840 PS,3.0,3250
BS,0.5D,665
GW,0.5D,2375 BP,0.5D,570 N,30.0,550LGR,1.5D,3840 UY,0.5D,980
KN,0.5D,1010 LG,0.5D,950
NP,3.0,3675
NG,3.0,3635 BG,0.5H,1025
BN,1.5D,1430 NU,2.0,2345 OS,2.5D,2405 NW,3.0,2425 NK,4.5,2425
N,30.0,950 
						

							POWER DISTRIBUTION 
Engine Compartment Fuse Box
Discovery Series II (LHD)7
1
Engine Compartment Fuse Box
VWR102160-A-02
C B A
(SXXX) SWITCH-SIDE
(SX XX) SW ITCH-PASSING
FLASH (S108) S WITCH-HEA DLAMP(S101) SWITCH-DIP
30 AMP 30 AMP
CIRCUITS (R101) RELAY-AUXILIARY
LINK 730 AMP
FUSE 1
PUMP (R173)
RELAY-ABS RETURN
FUSE 11
LINK 11
E NHA NCEMENT (A CE) (R215)RELAY-ACTIVE CORNERING
FUSE 9LINK 8 LINK 350 AMP150 AMP
50 AMP30 AMPLINK 1
30 AMP
(E107) EARTH
12 VOLTS
87A
87
86 85 30
87A
87
86 85 30
87A
87
86 85 30
G1
FUSE 1310 AMP
(V8) (TD5)
(V8)
(TD5)
FUSE 1515 AMP
C1 B1
A1
LINK 1330 AMP
F1 E1 D1
LINK 1040 AMP
2132
132 1
C1704-1 C1709-1 C15 47-1
C0528-2
C0529-2 C0823-1C0631-1C0588-7 C0581-3 C0584-3
C0583-4
C0582-1
C0582-3
C0585-2
C0504-8
C0574-3
C0575-5 C0575-6
C0926-1C0286-7
C0647-6 C0647-28
C05 86-9 C06 60-13
C0658-27C0507-1
C0504-1
C0506-15
C00 41-3
C0041-2
C00 41-6
C0041-5 C0041-4 C0192-1 C00 45-1
C0575-2 C0575-1
C0571-1 C0577-5 C0577-4
C0576-2 C0574-1
C0577-6 C0572-2 C0573-15C0572-1
C06 32-1
C0574-5 C0577-9 C0574-7 C0573-16C0574-6
C0605-6 C0578-6
A348A29 A28
A25
A23 A306
BATTERY (P100)
NOT USED (V101)
NO. 7 (T178) FUEL INJECTOR-
NO. 8 (T179)FUEL INJECTOR- MOTOR (M101) STARTERCOMPARTMENT (P101) FUSE BOX-PASSENGER COMPARTMENT (P101) FUSE BOX-PASSENGER
MODULE (ECM) (D131)ENGINE CONTROL COMPARTMENT (P101) FUSE BOX-PASSENGER (BCU) (D162) BODY CONTROL UNITABS (M152) PUMP-RETURN-
ABS (SLABS) (D163) ECU-SELF-LEVELLING/BURNING (H115) HEATER-FUEL ENHANCEMENT (ACE) (D191) ECU-ACTIVE CORNERING 0286 (K109) HEADER
SWITCH-LIGHTING (S100) FUSE BOX-ENGINE COMPARTMENT (P108)
NO,1.0D,430
NO,1.0D,485 B,40.0,740
PN,1.5D,330
NR,1.0D,205 NR,4.5,2175
NO,1.5D,120 PN,0.5D,825 N,40.0,1330
WO, 1.0D,885 NK,2.5D,940
PN,0.5D,2310BR,0.5D,775 PO,1.0D,870
NG,2.0,2390
NP,3.0,2295 U,2.0,2310 NW,4.5,2250 NR,3.0,2425 PG,2.0,2345 LG,0.5D,2345 WG,3.0,2425 WG,3.0,2405
B,0.5D,1095
NO,1.5D,370 NO,1.5D,1545PN,1.5D,380 N,40.0,1090 R,30.0,650 B,40.0,180
NR,4.5,690
R,2.0,1095
UR,1.5D,1155
UW,1.5D,1155 
						

							POWER DISTRIBUTION 
Engine Compartment Fuse Box
Discovery Series II (LHD)8
1
Engine Compartment Fuse Box
VWR102160-A-03
30 AMP 30 AMP
PUMP (R103) RELAY-FUEL
FUSE 10
RELAY-SLABS (R216) RELAY-HORN (R133)PLUG (R114)RELAY-GLOW
LINK 9 FUSE 16LINK 2 FUSE 12 FUSE 14
(R102) RELAY-ST ARTERFUSE 2
MAIN (R100) RELAY-LINK 12
15 AMP
30 AMP 100 AMP10 AMP20 AMP15 AMP
(V8)
87A
87
86 85 30
87 A
87
86 85 3087 A
87
86 85 3087 A
87
86 85 3087 A
87
86 85 3087 A
87
86 85 30
(LEVS 2 ONLY)(TD5) (V8/NON LEVS 2)
(PETROL 2 OXY)
(TD5) (NAS ONLY)
PUMP (R223)RE LAY-AIR INJECT ION
LINK 250 AMPF1
(NAS ONLY)(TD5)(V8)
(TD5) (PETROL 4 OXY) (TD5)
G1 D1 E1
21
C0629-1 C0449-14 C0203-14
C0636-16 C0570-3 C0601-1C0879-2 C0133-1 C0573-2
C0582-7 C0588-5
C04 79-1 C04 76-1
C04 77-1
C04 78-1
C0114-1 C0780-1
C0658-5 C06 35-18 C0586-12
C0158-29
C0449-10 C0203-10 C0376-2 C0390-2 C0655-6C0376-1 C0390-1 C0291-11C0004-2
C0003-2C01 93-26C0634-7 C0662-5C0179-1 C0448-3 C0162-3C0149-3 C06 35-23
C06 58-21
C0578-4 C0575-3 C0570-8
C0575-4 C0570-5 C0570-1
C0571-2
C0573-9 C0577-7 C0579-1 C0577-12 C0577-11C0570-3 C0573-7C0573-5 C0573-3 C0570-4
C0573-12
C0622-1 C0123-3 C0605-3
C0605-4 C0577-3
C0577-8 C0123-1
A110
A421 A40
A4 A42 A60
SJ5
SWITCH-INERTIA (S206)
BOOST CONTROL (N146) SOLENOID VALVE-
MODULE (ECM) (D131) ENGINE CONTROLINJECTION (M207) PUMP-AIRCANISTER (M162) VENT-EVAP
FLOW (MAF) (T115) SENSOR-MASS AIR
MOTOR (M101) STARTER
COMPARTMENT (P101) FUSE BOX-PASSENGER COMPARTMENT (P101) FUSE BOX-PASSENGER
TRANSMISSION (D123)AUTOMATIC ECU-ELECTRONICMODULE (ECM) (D131) ENGINE CONTROL UNIT (BCU) (D162)BODY CONTROL
GLOW PLUG (T171) GLOW PLUG (T171) GLOW PLUG (T171) GLOW PLUG (T171)
MODULE (ECM) (D131) ENGINE CONTROL
TANK (D179) UNIT-FUEL(SLS) (M160) LEVELLING SUSPENSION COMPRESSOR-SELF HORN-RH (L103)
HORN-LH (L102)
0291 (K109) HEADER
MODULE (ECM) (D131) ENGINE CONTROL ABS (SLABS) (D163) ECU-SELF-LEVELLING/
MODULE (ECM) (D131) ENGINE CONTROLMODULE (ECM) (D131) ENGINE CONTROL
MODULE (ECM) (D131) ENGINE CONTROL FUSE BOX-ENGINE COMPARTMENT (P108)
NK,1.0D,530NK,1.0,1405
NK,1.0,530 NK,0.5,100
BO,0.5D,2375 YB,3.0,1220 NK,0.5D,750
B,2.5,305 B,2.5,225
B,2.5,305
WB,4.0,4305 NK,0.5,790
UP,0.5D,570WP,3.0,800 WP,3.0,3925 UR,0.5D,2345
NR,2.0,1110
GU,1.5,490
B,2.5,305 NK,0.5H,1915
BO,0.5D,950NK, 0.5D,60 0
PN,1.5D,2250 NS,1.5D,2405
NP,0.5D,925 PY,1.0D,2325
YB,6.0,575
PG,0.75D,3965
PO,0.5D,840 PY,1.0D,3120
PG,0.75D,1395
WB,3.0,575
UP,0.5D,530WP,3.0,460 UR,0.5D,570 WG,0.5D,1080
NK,0.5H,2015
WR,0.5D,2345 NB,0.5D,985NK,1.0,350
UP,0.5D,575
87 A
87
86
85 30 
						

							POWER DISTRIBUTION 
Engine Compartment Fuse Box
Discovery Series II (LHD)9
1