2003 LAND ROVER Discovery

Land Rover Discovery HSE 2003 - BUZZERS, RELAYS & TIMERS

Land Rover Discovery HSE 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Component Location
ABS Relay	In engine compartment fuse box.
Active Cornering Enhancement Relay	In engine compartment fuse box.
Auxiliary Circuits Relay	In engine compartment fuse box.
Brakelight Relay	In passenger compartment fuse box.
Compressor Clutch Relay	In engine compartment fuse box.
Cooling Fan Relay	In engine compartment fuse box.
Front Blower Motor Relay	Beside blower motor, beside actuator.
Front Foglight Relay	In engine compartment fuse box.
Front Wiper Relay	In passenger compartment fuse box.
Fuel Pump Relay	In engine compartment fuse box.
Headlight Power Wash Relay	In engine compartment fuse box.
Heated Front Screen Relay	In engine compartment fuse box.
Horn Relay	In engine compartment fuse box.
Ignition Relay	In passenger compartment fuse box.
Left Indicator Relay	In passenger compartment fuse box.
Main Relay	In engine compartment fuse box.
Power Relay	Behind right side of dash.
Power Seat Relay (Left)	Under left front seat.
Power Seat Relay (Right)	Under right front seat.
Rear Blower Relay	At left side of luggage compartment, behind trim panel.
Rear Window Lift Relay	In passenger compartment fuse box.
Rear Wiper Relay	In passenger compartment fuse box.
Right Indicator Relay	In passenger compartment fuse box.
Self-Leveling/ABS Relay	In engine compartment fuse box.
Starter Relay	In engine compartment fuse box.

Land Rover Discovery HSE 2003 - CIRCUIT PROTECTION DEVICES

Land Rover Discovery HSE 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Component Location
Engine Compartment Fuse Box	Right front of engine compartment. See Fig. 1.
Fusible Link(s)	In engine compartment fuse box.
Passenger Compartment Fuse Box	Under left side of dash. See Fig. 1.
Satellite Fuse Box (Left)	Under left front seat. See Fig. 1.
Satellite Fuse Box (Right)	Under right front seat. See Fig. 1.

Land Rover Discovery HSE 2003 - CONTROL UNITS

Land Rover Discovery HSE 2003 CONTROL UNITS LOCATION

Component	Component Location
Active Cornering Enhancement ECU	Front left side of chassis frame rail. See Fig. 1.
Air Bag Diagnostic Control Unit	Below center console. See Fig. 1.
Air Temperature Control ECU	Behind heater control panel.
Body Control Unit	Under right side of dash. See Fig. 1.
Cruise Control ECU	Behind right side of dash, on bracket.
Diagnostic Control Unit	Below center console.
Electronic Automatic Transmission ECU	Under left front seat. See Fig. 1.
Engine Control Module	Under right side of dash. See Fig. 1.
Heated Seat Module (Left)	Under left front seat.
Heated Seat Module (Right)	Under right front seat.
Park Distance Control ECU	Left rear of luggage compartment.
Self-Leveling/ABS ECU	Under right side of dash. See Fig. 1.
Sun Roof ECU	On front center of roof.

Land Rover Discovery HSE 2003 - MOTORS

Land Rover Discovery HSE 2003 MOTORS LOCATION

Component	Component Location
Active Cornering Enhancement Pump	Left side of engine compartment.
Air Distribution Mode Motor	Behind center of dash.
Air Temperature Mode Motor (Left/Right)	Behind center of dash.
Front Blower Motor	Behind right side of dash, right of heater evaporator unit.
Front Sun Roof Motor	At front center of roof.
Front Washer Pump	Behind left side of front bumper.
Front Wiper Motor	On top center of firewall.
Fuel Leak Detection Pump	Under right side of vehicle.
Fuel Pump & Fuel Gauge Sender Unit	Inside fuel tank.
Headlight Leveling Motor (Left)	Behind left headlight.
Headlight Leveling Motor (Right)	Behind right headlight.
Headlight Power Wash Pump	Behind left side of front bumper.
Rear Blower Motor	At left side of luggage compartment, behind trim panel.
Rear Sun Roof Motor	At center of roof.
Rear Washer Pump	Behind left side of front bumper.
Rear Wiper Motor	Behind rear door trim panel.
Recirculated Air Servo Motor	Behind glove box.
Secondary Air Injection Pump	At right rear side of engine compartment.
Self-Leveling Suspension Compressor	Behind left sill.
Vacuum Pump	At right rear of engine compartment.

Land Rover Discovery HSE 2003 - SENDING UNITS & SENSORS

Land Rover Discovery HSE 2003 SENDING UNITS & SENSORS LOCATION

Component	Component Location
ABS Sensor (Left Front)	Behind left front wheel.
ABS Sensor (Left Rear)	Behind left rear wheel.
ABS Sensor (Right Front)	Behind right front wheel.
ABS Sensor (Right Rear)	Behind right rear wheel.
Accelerometer (Lower)	Right front door sill.
Accelerometer (Upper)	Front center of headlining.
Ambient Air Temperature Sensor	Behind front grille.
Camshaft Position Sensor	At lower right front of engine.
Crankshaft Speed & Position Sensor	At left rear of engine.
Engine Coolant Temperature Sensor	On front left side of engine.
Evaporator Temperature Sensor	Behind center of dash.
Fuel Pump & Fuel Gauge Sender Unit	Inside fuel tank.
Fuel Tank Pressure Sensor	On top of fuel tank.
Heated Oxygen Sensor (Left Front)	Below left exhaust manifold, on exhaust pipe.
Heated Oxygen Sensor (Left Rear)	On left exhaust pipe, downstream of catalytic converter.
Heated Oxygen Sensor (Right Front)	Below right exhaust manifold, on exhaust pipe.
Heated Oxygen Sensor (Right Rear)	On right exhaust pipe, downstream of catalytic converter.
Heater Coolant Temperature Sensor	Behind center of dash.
Height Sensor (Left)	Below left rear wheelwell.
Height Sensor (Right)	Below right rear wheelwell.
In-Car Temperature Sensor	Under right side of dash.
Knock Sensor (Left Bank)	At lower left side of engine, near engine mount.
Knock Sensor (Right Bank)	At lower right side of engine, near starter.
Mass Airflow/Inlet Air Temperature Sensor	Between air cleaner housing & throttle body, on intake air duct.
Oil Temperature Sensor	On side of transfer box.
Park Distance Control Sensor(s)	Mounted in rear bumper.
Radiator Temperature Sensor	On radiator.
Sunlight Sensor	Top center of dash.
Thermostat Monitoring Sensor	Near lower hose on radiator.
Throttle Position Sensor	On throttle body.
Transmission Fluid Temperature Sensor	On right end of transmission fluid cooler tank.
Transmission Neutral Sensor	On right side of transfer box.
Volumetric Sensor (Left)	At top of left "B" pillar.
Volumetric Sensor (Right)	At top of right "B" pillar.

Land Rover Discovery HSE 2003 - SOLENOID & SOLENOID VALVES

Land Rover Discovery HSE 2003 SOLENOID & SOLENOID VALVES LOCATION

Component	Component Location
ABS Modulator	At left rear of engine compartment.
Active Cornering Enhancement Valve Block	Behind right sill.
EVAP Canister Vent Solenoid Valve	At right rear of engine compartment.
Idle Air Control Valve	On left rear side of engine.
Interlock Solenoid	At selector lever assembly.
Purge Control Valve	On top left side of engine.
Rear Thermal Expansion Valve	At left side of luggage compartment, behind trim panel.
Secondary Air Injection Control Valve (Left)	On top left side of engine.
Secondary Air Injection Control Valve (Right)	On top right side of engine.
Secondary Air Injection Vacuum Solenoid	On top left side of engine.
Self-Leveling Suspension Exhaust Valve	Behind left sill.
Thermal Expansion Valve	Behind right side of dash, in A/C-heater evaporator unit.

Land Rover Discovery HSE 2003 - SWITCHES

Land Rover Discovery HSE 2003 SWITCHES LOCATION

Component	Component Location
Brake Fluid Level Switch	At left rear of engine compartment, on top of brake fluid reservoir.
Brakelight Switch	On brake pedal support.
Brake Pedal Switch	On brake pedal support.
Clutch Pedal Switch	On clutch pedal support.
Differential Lock Warning Lamp Switch	On front of transfer box.
Dual Pressure Switch	On receiver-drier.
Handbrake Switch	Under center console.
High-Low Transmission Switch	On rear of transfer box.
Hood Switch	On left front corner of engine compartment.
Oil Pressure Switch	At lower right side of engine, near oil filter.
Reverse Lamp Switch	On left rear side of transmission.
Selector Position Switch	On left side of transmission.
Starter Inhibitor Switch	On left side of transmission.

Land Rover Discovery HSE 2003 - MISCELLANEOUS

Land Rover Discovery HSE 2003 MISCELLANEOUS LOCATION

Component	Component Location
Aerial Amplifier (Left)	At left rear of roof, behind trim panel.
Aerial Amplifier (Right)	At right rear of roof, behind trim panel.
Alarm Receiver	In center of roof.
Alarm Sounder	Right side of engine compartment.
Data Link Connector	Under left side of dash.
Global Positioning System Antenna & Diplexer Unit	At rear of roof.
Horn	Behind right side of front grille.
Ignition Coil	At right rear of engine.
Park Distance Control Sounder	At left side of luggage compartment, behind trim panel.
Passive Immobilization Coil	On right side of steering column.
Power Amplifier	Under left front seat.
Radio Headphone Amplifier (Left)	Behind left rear trim panel.
Radio Headphone Amplifier (Right)	Behind right rear trim panel.
Remote Control Interface Unit	Behind center of dash.
Resistor Pack (Front)	Under right side of dash.
Resistor Pack (Rear)	At left side of luggage compartment, behind trim panel.
Seat Belt Pretensioner (Left)	At left front seat belt anchor.
Seat Belt Pretensioner (Right)	At right front seat belt anchor.

Land Rover Discovery HSE 2003 - CONNECTORS

Land Rover Discovery HSE 2003 CONNECTORS LOCATION

Component	Component Location
C0015 (Natural, 2 Pin)	Behind right side of dash.
C0020 (Natural, 4 Pin)	Behind right rear trim panel.
C0047 (Black, 40 Pin)	Left side of steering column.
C0067 (Green, 40 Pin)	Left side of steering column.
C0083 (Light Gray, 6 Pin)	Left side of steering column.
C0101 (Brown, 16 Pin)	Behind left kick panel.
C0102 (Light Gray, 18 Pin)	Behind left kick panel.
C0162 (Gray, 8 Pin)	Right side of engine compartment.
C0171 (Black, 8 Pin)	Right front side of engine.
C0203 (Gray, 14 Pin)	Right rear of engine compartment.
C0223 (Black, 40 Pin)	Left side of steering column.
C0227 (Black, 1 Pin)	Behind right side of dash.
C0229 (Green, 40 Pin)	Underside of steering column.
C0231 (Light Gray, 6 Pin)	Underside of steering column.
C0235 (Black, 1 Pin)	Behind right side of dash.
C0248 (White, 7 Pin)	Under right front seat.
C0253 (Brown, 5 Pin)	Under right seat.
C0255 (Brown, 5 Pin)	Under left seat.
C0306 (Black, 1 Pin)	Right side of transfer box.
C0307 (Black, 1 Pin)	Right side of transfer box.
C0376 (Black, 2 Pin)	Under engine compartment fuse box.
C0377 (Orange, 14 Pin)	Under engine compartment fuse box.
C0378 (Gray, 14 Pin)	Under engine compartment fuse box.
C0390 (Black, 14 Pin)	Under engine compartment fuse box.
C0391 (Orange, 14 Pin)	Under engine compartment fuse box.
C0392 (Gray, 14 Pin)	Under engine compartment fuse box.
C0431 (Natural, 3 Pin)	Behind right side of dash.
C0435 (White, 2 Pin)	Left "B" pillar.
C0436 (White, 2 Pin)	Right "B" pillar.
C0448 (Gray, 8 Pin)	Right side of engine compartment.
C0449 (Gray, 14 Pin)	Right rear of engine compartment.
C0454 (Brown, 3 Pin)	Behind right kick panel.
C0457 (Brown, 3 Pin)	Behind right kick panel.
C0459 (Light Gray, 8 Pin)	Behind left kick panel.
C0460 (Light Gray, 12 Pin)	Behind left kick panel.
C0463 (Light Gray, 8 Pin)	Behind right kick panel.
C0464 (Light Gray, 12 Pin)	Behind right kick panel.
C0480 (Light Gray, 22 Pin)	Behind right kick panel.
C0483 (Brown, 16 Pin)	Behind left kick panel.
C0484 (Light Gray, 18 Pin)	Behind left kick panel.
C0485 (Light Gray, 22 Pin)	Behind right kick panel.
C0521 (Black, 8 Pin)	Top right side of engine.
C0649 (Black, 3 Pin)	Left "B" pillar.
C0650 (Black, 3 Pin)	Right "B" pillar.
C0651 (White, 6 Pin)	Left "B" pillar.
C0668 (White, 10 Pin)	Under center console.
C0677 (White, 6 Pin)	Under center console.
C0678 (Black, 10 Pin)	Under center console.
C0681 (White, 10 Pin)	Under center console.
C0686 (Black, 1 Pin)	Left side of transfer box.
C0687 (Black, 1 Pin)	Left side of transfer box.
C0728 (Black, 10 Pin)	Under center console.
C0729 (White, 6 Pin)	Under center console.
C0733 (Light Gray, 12 Pin)	Behind right kick panel.
C0744 (Light Gray, 8 Pin)	Behind right kick panel.
C0751 (Brown, 5 Pin)	Under right front seat.
C0754 (Light Gray, 12 Pin)	Under right front seat.
C0756 (Light Gray, 12 Pin)	Under right front seat.
C0766 (Natural, 8 Pin)	Under left side of dash.
C0768 (Light Gray, 14 Pin)	Behind glove box.
C0777 (White, 6 Pin)	Right "B" pillar.
C0797 (Natural, 8 Pin)	Behind glove box.
C0799 (Natural, 13 Pin)	Behind glove box.
C0803 (White, 2 Pin)	Left "B" pillar.
C0804 (Black, 3 Pin)	Left "B" pillar.
C0805 (White, 6 Pin)	Left "B" pillar.
C0838 (Light Gray, 12 Pin)	Under left seat.
C0856 (White, 8 Pin)	Behind left rear trim panel.
C0905 (Natural, 4 Pin)	Behind right rear trim panel.
C0971 (White, 7 Pin)	Under right front seat.
C2403 (Black, 6 Pin)	Left rear of vehicle.
C2404 (Black, 6 Pin)	Left rear of vehicle.

Land Rover Discovery HSE 2003 - GROUNDS

Land Rover Discovery HSE 2003 GROUNDS LOCATION

Component	Component Location
C0017	Behind left kick panel. See Fig. 1.
C0018	Behind right kick panel. See Fig. 1.
C0360	Below center console.
C0362	Behind left kick panel.
C0551	Behind right side of dash.
C0552	Under center console. See Fig. 1.
C0557	Right side of engine compartment.
C0558	Right side of engine compartment. See Fig. 1.
C0559	Right side of engine compartment. See Fig. 1.
C0560	Right side of engine compartment.
C0561	Lower left front of engine compartment. See Fig. 1.
C0562	Lower left front of engine compartment. See Fig. 1.
C0563	Lower left front of engine compartment. See Fig. 1.
C0564	Lower left front of engine compartment.
C0706	Behind right rear trim panel. See Fig. 1.
C0707	Behind left rear trim panel. See Fig. 1.
C0708	Under center console. See Fig. 1.
C0709	Right side of engine compartment.
C0786	Behind left rear trim panel. See Fig. 1.
C0807	Right side of engine compartment.
C0808	Behind right rear trim panel. See Fig. 1.
C0809	Behind left rear trim panel. See Fig. 1.
C0810	Right side of engine compartment.
C0811	Right side of engine compartment.
C0910	Behind right kick panel.
C1000	Right front of engine compartment.
C1001	Left front of engine compartment.
C1259	Behind center of headliner.

Land Rover Discovery HSE 2003 - COMPONENT LOCATION GRAPHICS

NOTE:

Fig.res may show multiple component locations. - appropriate table for proper figure references.

Fig. 1: Land Rover Discovery HSE 2003 - Component Locations - Vehicle