2002 LAND ROVER DISCOVERY ECU
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CONTENTS
8CONTENTS
Knock sensor (KS) .......................................................................................................................... 18-2-76
Air cleaner assembly .................................................................................................................... 18-2-77
Element - air filter .......................................................................................................................... 18-2-78
Cable - throttle ................................................................................................................................ 18-2-78
Sensor - Mass Air Flow (MAF) ...................................................................................................... 18-2-79
Throttle Body .................................................................................................................................. 18-2-80
Plenum chamber............................................................................................................................. 18-2-81
Sensor - throttle position (TP) ....................................................................................................... 18-2-82
Valve - idle air control (IACV) ....................................................................................................... 18-2-82
Injectors ......................................................................................................................................... 18-2-83
Actuator - cruise control ................................................................................................................ 18-2-84
Vacuum control unit - up to 03MY .................................................................................................. 18-2-85
Vacuum control unit - from 03MY ................................................................................................... 18-2-85
Cable - cruise control ..................................................................................................................... 18-2-86
Switch - cruise control (on/off) ........................................................................................................ 18-2-87
Switch - cruise control (set/resume) .............................................................................................. 18-2-87
Switch - clutch pedal - cruise control ............................................................................................ 18-2-88
ECU - Cruise control ..................................................................................................................... 18-2-88
FUEL DELIVERY SYSTEM - Td5 ............................................................. 19-1-1
DESCRIPTION AND OPERATION
Fuel delivery system component location ....................................................................................... 19-1-1
Fuel tank and breather components ............................................................................................... 19-1-2
Description ...................................................................................................................................... 19-1-3
Operation ........................................................................................................................................ 19-1-11
ADJUSTMENTS
Fuel system purging ....................................................................................................................... 19-1-13
Fuel tank - drain .............................................................................................................................. 19-1-13
REPAIRS
Switch - inertia - fuel cut-off ............................................................................................................ 19-1-15
Pump - fuel .................................................................................................................................... 19-1-15
Tank - fuel ..................................................................................................................................... 19-1-17
Solenoid - fuel filler flap release .................................................................................................... 19-1-18
Switch - fuel filler flap release - up to 03MY ................................................................................... 19-1-18
Switch - fuel filler flap release - from 03MY .................................................................................... 19-1-19
FUEL DELIVERY SYSTEM - V8 ............................................................... 19-2-1
DESCRIPTION AND OPERATION
Fuel delivery system ....................................................................................................................... 19-2-1
Fuel tank and breather components (all except NAS) .................................................................... 19-2-2
Fuel tank and breather components (NAS) .................................................................................... 19-2-3
Description ...................................................................................................................................... 19-2-4
Operation ........................................................................................................................................ 19-2-10
ADJUSTMENTS
Fuel tank - drain .............................................................................................................................. 19-2-11
REPAIRS
Switch - inertia - fuel cut-off ............................................................................................................ 19-2-13
Pump - fuel .................................................................................................................................... 19-2-13
Tank - fuel ...................................................................................................................................... 19-2-15
Filler tube - fuel ............................................................................................................................. 19-2-16
Page 18 of 1672
CONTENTS
CONTENTS 15
Bushes - radius arm ...................................................................................................................... 60-39
ECU - ACE ..................................................................................................................................... 60-40
Accelerometer - ACE - upper ........................................................................................................ 60-41
Accelerometer - ACE - lower ........................................................................................................ 60-42
Pump - ACE - V8 ............................................................................................................................ 60-42
Pump - ACE - diesel ....................................................................................................................... 60-44
Valve block - ACE ......................................................................................................................... 60-46
Filter - high pressure - ACE .......................................................................................................... 60-48
Pressure transducer - ACE ........................................................................................................... 60-49
Solenoid - pressure control valve - ACE ....................................................................................... 60-50
Solenoid - directional control valve - ACE ..................................................................................... 60-51
Pipe assembly - valve block to front actuator - ACE ...................................................................... 60-51
Pipe assembly - pump or reservoir to valve block - ACE - V8 ....................................................... 60-54
Pipe assembly - pump or reservoir to valve block - ACE - diesel .................................................. 60-57
Pipe assembly - valve block to rear actuator - ACE ........................................................................ 60-61
Actuator - front - ACE .................................................................................................................... 60-63
Bushes - front long arm - ACE ........................................................................................................ 60-65
REAR SUSPENSION ................................................................................ 64-1
DESCRIPTION AND OPERATION
Rear suspension component layout (vehicles with SLS) ............................................................... 64-2
Rear suspension component layout (vehicles without SLS) .......................................................... 64-3
Rear suspension components ........................................................................................................ 64-4
Description ...................................................................................................................................... 64-6
DESCRIPTION AND OPERATION
SLS component layout .................................................................................................................... 64-9
SLS system control diagram ........................................................................................................... 64-10
Description - SLS ............................................................................................................................ 64-12
Operation ........................................................................................................................................ 64-20
ADJUSTMENTS
SLS calibration blocks..................................................................................................................... 64-23
REPAIRS
Wheel hub ....................................................................................................................................... 64-25
Road spring - rear ........................................................................................................................... 64-27
Air spring - SLS ............................................................................................................................... 64-28
Damper - rear ................................................................................................................................ 64-29
Bushes - radius arm ...................................................................................................................... 64-29
Bushes - Watts linkage ................................................................................................................. 64-31
Sensor - height - SLS...................................................................................................................... 64-32
Compressor unit - air - SLS ............................................................................................................ 64-32
Filter - intake - SLS ......................................................................................................................... 64-34
Switch - ride height ......................................................................................................................... 64-34
Air valve - SLS ................................................................................................................................ 64-35
Actuator - rear - ACE ...................................................................................................................... 64-36
Bushes - rear long arm - ACE ......................................................................................................... 64-38
BRAKES ................................................................................................... 70-1
DESCRIPTION AND OPERATION
Page 19 of 1672
CONTENTS
16 CONTENTS
Brake system control component layout ......................................................................................... 70-1
Brake system control diagram ........................................................................................................ 70-2
Brake system hydraulic component layout ..................................................................................... 70-4
Description ...................................................................................................................................... 70-5
Operation ........................................................................................................................................ 70-20
DESCRIPTION AND OPERATION
Handbrake component layout ......................................................................................................... 70-25
Description ...................................................................................................................................... 70-26
ADJUSTMENTS
Handbrake .................................................................................................................................... 70-29
Brake system bleeding .................................................................................................................. 70-30
REPAIRS
Brake disc - front .......................................................................................................................... 70-33
Brake disc - rear ........................................................................................................................... 70-34
Master cylinder - brake ................................................................................................................. 70-35
Cable - handbrake ........................................................................................................................ 70-36
Switch - brake light ....................................................................................................................... 70-37
Brake pads - front ......................................................................................................................... 70-37
Brake pads - rear .......................................................................................................................... 70-38
Brake shoes - handbrake................................................................................................................ 70-39
Servo - brake .................................................................................................................................. 70-41
Vacuum pump - servo..................................................................................................................... 70-42
Housing - caliper - front ................................................................................................................ 70-43
Housing - caliper - rear ................................................................................................................. 70-44
ECU - Self levelling and anti locking brakes (SLABS) ................................................................. 70-45
Sensor – ABS – front ..................................................................................................................... 70-46
Sensor – ABS – rear ....................................................................................................................... 70-47
Modulator unit - ABS ...................................................................................................................... 70-47
Switch - Hill descent control............................................................................................................ 70-48
Switch - handbrake ....................................................................................................................... 70-49
RESTRAINT SYSTEMS ............................................................................ 75-1
DESCRIPTION AND OPERATION
SRS component layout ................................................................................................................... 75-1
SRS block diagram ......................................................................................................................... 75-2
Description - SRS ........................................................................................................................... 75-3
Operation - SRS ............................................................................................................................. 75-9
DESCRIPTION AND OPERATION
Description - seat belts ................................................................................................................... 75-11
REPAIRS
Seat belt - front .............................................................................................................................. 75-13
Seat belt - rear - centre ................................................................................................................. 75-13
Seat belt - rear - side .................................................................................................................... 75-15
Mounting - seat belt - 'B' post ...................................................................................................... 75-16
Seat belts - third row ....................................................................................................................... 75-17
Pre-tensioner - front seat belt ....................................................................................................... 75-18
Airbag module - drivers .................................................................................................................. 75-18
Airbag module - passenger ........................................................................................................... 75-19
DCU ................................................................................................................................................ 75-20
Rotary coupler ................................................................................................................................ 75-21
Airbag deployment tool - self test ................................................................................................... 75-22
Airbag module - drivers - deployment ............................................................................................. 75-23
Page 22 of 1672
CONTENTS
CONTENTS 19
SUNROOF................................................................................................. 76-6-1
DESCRIPTION AND OPERATION
Electric sunroof component location ............................................................................................... 76-6-1
Sunroof components ....................................................................................................................... 76-6-2
System block diagram..................................................................................................................... 76-6-4
Description ...................................................................................................................................... 76-6-5
Operation ........................................................................................................................................ 76-6-12
REPAIRS
Sunroof - front ................................................................................................................................. 76-6-13
Sunroof - rear ................................................................................................................................ 76-6-14
Glass panel - sunroof ...................................................................................................................... 76-6-15
Motor - sunroof ............................................................................................................................... 76-6-15
Drive cable assembly ..................................................................................................................... 76-6-16
Switch pack - sunroof ..................................................................................................................... 76-6-17
ECU - sunroof ................................................................................................................................ 76-6-18
CHASSIS AND BODY DIMENSIONS....................................................... 77-1-1
CHASSIS DIMENSIONS
Chassis body mounting points - front end....................................................................................... 77-1-1
Chassis body mounting points - rear end ....................................................................................... 77-1-2
Chassis dimensions - front end ....................................................................................................... 77-1-3
Chassis dimensions - rear end ....................................................................................................... 77-1-4
BODY DIMENSIONS
Body Dimensions ............................................................................................................................ 77-1-5
Gaps and profiles ............................................................................................................................ 77-1-13
PANEL REPAIRS ..................................................................................... 77-2-1
REPLACEMENT PANELS
Replacement panels ....................................................................................................................... 77-2-1
Front end inner panels .................................................................................................................... 77-2-2
Valance panels .............................................................................................................................. 77-2-3
Body side panels............................................................................................................................. 77-2-4
Body side assembly ........................................................................................................................ 77-2-5
'D'-post assembly ............................................................................................................................ 77-2-6
Rear floor assembly. ....................................................................................................................... 77-2-7
Rear end panels ............................................................................................................................. 77-2-8
Front and rear doors ....................................................................................................................... 77-2-9
Taildoor ........................................................................................................................................... 77-2-10
Roof panels ..................................................................................................................................... 77-2-11
Replacement panels ....................................................................................................................... 77-2-12
PROCEDURES
General welding precautions .......................................................................................................... 77-2-13
Electronic control units .................................................................................................................... 77-2-14
PROCEDURES
Panel replacement procedure ......................................................................................................... 77-2-15
REPAIRS
Page 25 of 1672
CONTENTS
22 CONTENTS
Condenser .................................................................................................................................... 82-33
Receiver drier and dual pressure switch......................................................................................... 82-36
ECU - air temperature control ......................................................................................................... 82-37
Sensor - ambient air temperature ................................................................................................ 82-38
Sensor - solar light ........................................................................................................................ 82-38
Sensor - air temperature ............................................................................................................. 82-39
Evaporator, evaporator thermistor and thermal expansion valve (TXV) ........................................ 82-40
Expansion valve - (TXV) - rear ....................................................................................................... 82-42
Evaporator - rear............................................................................................................................. 82-43
Evaporator and motor assembly - rear ........................................................................................... 82-44
Blower motor assembly - rear ......................................................................................................... 82-46
Resistor - blower motor ................................................................................................................. 82-46
Duct - centre - rear.......................................................................................................................... 82-47
WIPERS AND WASHERS ........................................................................ 84-1
DESCRIPTION AND OPERATION
Wipers and washers component layout .......................................................................................... 84-1
Front wiper components ................................................................................................................. 84-2
Rear wiper components .................................................................................................................. 84-3
Washer components ....................................................................................................................... 84-4
Wipers and washers block diagram ................................................................................................ 84-6
Description ...................................................................................................................................... 84-8
Operation ........................................................................................................................................ 84-16
REPAIRS
Reservoir - washer - up to 03MY .................................................................................................... 84-19
Reservoir - washer - from 03MY ..................................................................................................... 84-20
Jet - washer - windscreen ............................................................................................................... 84-21
Pump - washer - screen and headlamp ....................................................................................... 84-21
Motor and linkage - wiper - windscreen .......................................................................................... 84-22
Switch - wiper and washer - windscreen ........................................................................................ 84-23
Jet - washer - headlamp ................................................................................................................ 84-24
Jet - washer - rear screen ............................................................................................................ 84-25
Switch - rear wash .......................................................................................................................... 84-25
Motor - wiper - rear screen ............................................................................................................ 84-26
Switch - wiper - rear - up to 03MY .................................................................................................. 84-27
Switch - wiper - rear - from 03MY ................................................................................................... 84-27
CHARGING AND STARTING ................................................................... 86-1-1
REPAIRS
Alternator - diesel .......................................................................................................................... 86-1-1
Alternator - V8................................................................................................................................. 86-1-2
Belt - auxiliary drive ........................................................................................................................ 86-1-3
Battery ........................................................................................................................................... 86-1-4
Battery carrier ................................................................................................................................ 86-1-4
Starter motor - diesel ...................................................................................................................... 86-1-5
Starter motor - V8 ........................................................................................................................... 86-1-6
LIGHTING.................................................................................................. 86-2-1
ADJUSTMENTS
Headlamps beam alignment - up to 03MY ..................................................................................... 86-2-1
Page 27 of 1672
CONTENTS
24 CONTENTS
Electric windows block diagram ...................................................................................................... 86-5-1
Electric windows component layout ................................................................................................ 86-5-2
Description ...................................................................................................................................... 86-5-4
Operation ....................................................................................................................................... 86-5-11
REPAIRS
Switch - rear door ......................................................................................................................... 86-5-13
Switch - console ............................................................................................................................ 86-5-13
Switch - heated rear screen ............................................................................................................ 86-5-14
IN CAR ENTERTAINMENT....................................................................... 86-6-1
DESCRIPTION AND OPERATION
ICE System Component layout....................................................................................................... 86-6-1
Base and mid line ICE system control diagram .............................................................................. 86-6-2
High line ICE system control diagram............................................................................................. 86-6-3
Description ...................................................................................................................................... 86-6-4
REPAIRS
Radio cassette player ..................................................................................................................... 86-6-13
Speaker - low/full range - front door ............................................................................................. 86-6-14
Speaker - low range - rear door ..................................................................................................... 86-6-14
Switches - remote control - ICE .................................................................................................... 86-6-15
Amplifier - aerial .............................................................................................................................. 86-6-15
Speaker - mid range - front door ................................................................................................... 86-6-16
Speaker - high range - rear door .................................................................................................. 86-6-16
Amplifier - power ........................................................................................................................... 86-6-17
Speaker - tail door ........................................................................................................................ 86-6-18
CD autochanger ............................................................................................................................ 86-6-18
HARNESSES ............................................................................................ 86-7-1
REPAIRS
Harness - injectors - diesel ............................................................................................................ 86-7-1
Harness - body ............................................................................................................................. 86-7-1
Harness - engine - V8 ..................................................................................................................... 86-7-8
Harness - engine - diesel ................................................................................................................ 86-7-13
Harness - main ............................................................................................................................. 86-7-16
DRIVING AIDS .......................................................................................... 86-8-1
DESCRIPTION AND OPERATION
Park Distance Control – Component Location................................................................................ 86-8-1
Park Distance Control – Control Diagram....................................................................................... 86-8-2
Description ...................................................................................................................................... 86-8-4
Operation ........................................................................................................................................ 86-8-10
REPAIRS
Control unit (ECU) - parking aid...................................................................................................... 86-8-13
Sounder - parking aid rear ............................................................................................................. 86-8-14
Sensor - parking aid - rear - inner ................................................................................................... 86-8-15
Sensor - parking aid - rear - outer .................................................................................................. 86-8-16
Page 28 of 1672
CONTENTS
CONTENTS 25
NAVIGATION SYSTEM ............................................................................ 87-1
DESCRIPTION AND OPERATION
Navigation System Component Location ........................................................................................ 87-1
Description ...................................................................................................................................... 87-2
REPAIRS
Interface electronic control unit (ECU) - remote control ................................................................. 87-11
Display unit .................................................................................................................................... 87-12
INSTRUMENTS......................................................................................... 88-1
DESCRIPTION AND OPERATION
Instrument pack .............................................................................................................................. 88-1
Instrument component location - Engine compartment / underneath vehicle ................................. 88-2
Instrument component location - Passenger compartment............................................................. 88-3
Instrument block diagram................................................................................................................ 88-4
Description ...................................................................................................................................... 88-5
Interior rear view mirror with compass (where fitted) ..................................................................... 88-42
REPAIRS
Clock ............................................................................................................................................... 88-45
Instrument pack ............................................................................................................................ 88-45
Page 32 of 1672
INTRODUCTION
01-3
Abbreviations and Symbols
A Amperes
AAP Ambient Air Pressure
AAT Ambient Air Temperature
ABDC After Bottom Dead Centre
ABS Anti-Lock Brake System
ABS / TC Anti-lock Brake System / Traction
Control
ac Alternating current
A/C Air Conditioning
ACE Active Cornering Enhancement
ACEA Association of Constructors of
European Automobiles
AFR Air Fuel Ratio
AP Ambient Pressure
ASC Anti-shunt Control
ATC Air Temperature Control
ATDC After Top Dead Centre
AUX Auxiliary
AVC Automatic Volume Control
BBDC Before Bottom Dead Centre
BBUS Battery Backed Up Sounder
BCU Body Control Unit
BDC Bottom Dead Centre
bhp Brake Horse Power
BP Boost Pressure
BPP Brake Pedal Position
BS British Standard
BTDC Before Top Dead Centre
BWD Backward
C Celsius
CAN Controller Area Network
CD Compact Disc
CDC Centre Differential Control
CDL Central Door Locking
CD - ROM Compact Disc - Read Only
Memory
CFC Chlorofluorocarbon
CHMSL Centre High Mounted Stop Lamp
CKP Crankshaft Position
CLV Calculated Load Value
cm Centimetre
cm
2Square centimetre
cm3Cubic centimetre
CMP Camshaft Position
CPP Clutch Pedal Position
CO Carbon Monoxide
CO
2Carbon Dioxide
COB Clear Over Base
CR Common Rail
CVS Canister Vent Solenoid
dB Decibels
DDM Driver's Door Module
deg. Degree, angle or temperature
DI Direct Injection
dia. DiameterDIN Deutsche Industrie Normen
(German Industrial Standards)
dc Direct current
DCV Directional Control Valve
DOHC Double Overhead Camshaft
DSP Digital Signal Processing
DTI Dial Test Indicator
DMF Dual Mass Flywheel
DVD Digital Versatile Disc
EACV Electronic Air Control Valve
EAT Electronic Automatic
Transmission
EBD Electronic Brake pressure
Distribution
ECD European Community Directive
ECM Engine Control Module
ECT Engine Coolant Temperature
ECU Electronic Control Unit
EDC Electronic Diesel Control
EEPROM Electronic Erasable
Programmable Read Only
Memory
EGR Exhaust Gas Recirculation
EKA Emergency Key Access
ELR Emergency Locking Retractor
EN European Norm
EOBD European On Board Diagnostics
EON Enhanced Other Network
ERL Electrical Reference Library
ETC Electronic Traction Control
EUI Electronic Unit Injector
EVAP Evaporative Emission
EVR Electronic Vacuum Regulator
F Fahrenheit
ft. Feet
FBH Fuel Burning Heater
FET Field Effect Transistor
FIP Fuel Injection Pump
FTC Fast Throttle Control
FWD Forward
> Greater than
g Gramme or Gravity
gal. Gallons
GMT Greenwich Mean Time
GPS Global Positioning System
hHour
hc High compression
HC Hydro Carbons
HDC Hill Descent Control
HDOP Height Dilation Of Precision
HDPE High Density Polyethylene
HFS Heated Front Screen
Hg Mercury
HO
2S Heated Oxygen Sensor
HMW High Molecular Weight