1999 LAND ROVER DISCOVERY wheel

WIPERS AND WASHERS
84-24 REPAIRS
Pump - washer - screen and headlamp
$% 84.10.21
The following procedure also covers removal of the
rear screen washer pump and the headlamp washer
pump.
Remove
1. Headlamp washer pump: Remove front
bumper.

+ EXTERIOR FITTINGS, REPAIRS,
Bumper assembly - front.
2. Front and rear screen washer pumps:
Remove 7 screws securing LH front wheel arch
liner extension to liner and bumper valance and
remove liner extension.
3.Position container under washer reservoir to
collect fluid spillage. 4.Disconnect multiplug from washer pump.
5.Release clip and disconnect washer hose from
washer pump.
6.Remove washer pump from reservoir and
remove and discard pump seal.
Refit
1.Use a new seal and fit pump to reservoir.
2.Connect hose to pump and secure with clip.
3.Connect multiplug to pump.
4. Front and rear screen washer pumps:Fit
wheel arch liner extension, secure to bumper
valance and liner with screws.
5. Headlamp washer pump:Fit front bumper.

+ EXTERIOR FITTINGS, REPAIRS,
Bumper assembly - front.
6.Fill reservoir with washer fluid.

WIPERS AND WASHERS
REPAIRS 84-27
Jet - washer - headlamp
$% 84.20.08
The procedure to remove the headlamp washer jet
on 03MY vehicles is detailed in the front bumper
finisher job.

+ EXTERIOR FITTINGS, REPAIRS, Trim
finisher - bumper - front - from 03MY.
Remove
1.Remove retaining screw cover from jet
housing.
2.Remove screw securing jet to bumper.
3.Release jet and withdraw sufficiently to gain
access to washer tube. Disconnect tube from
jet and remove jet.
Refit
1.Connect jet to washer tube, ensuring it is
pushed fully home.
2.Locate jet in bumper, retain with screw and fit
screw cover.
Jet - washer - rear screen
$% 84.30.09
Remove
1.Remove spare wheel.
2.Remove rear screen wiper blade.
3.Release washer jet and washer jet tube from
wiper arm.
4.Release washer jet from washer jet tube and
remove jet.
Refit
1.Fit new washer jet to washer jet tube and fit to
wiper arm.
2.Fit rear screen wiper blade.
3.Fit spare wheel.

WIPERS AND WASHERS
REPAIRS 84-29
Motor - wiper - rear screen
$% 84.35.12
Remove
1.Remove spare wheel from taildoor.
2.Remove tail door trim casing.

+ DOORS, REPAIRS, Trim casing - tail
door.
3.Remove tail door water shedder.
4.Disconnect washer tube
5.Raise nut cover, remove nut and release wiper
arm.
6.Remove spindle nut and flat washer and
discard rubber seal.
7.Disconnect taildoor harness multiplug from
wiper motor.
8.Remove 2 bolts securing wiper motor to tail
door.
9.Remove wiper motor. Refit
1.Position wiper motor to door and secure with
bolts.
2.Connect tail door harness multiplug to wiper
motor.
3.Fit rubber seal, flat washer and spindle nut.
Tighten spindle nut to 3 Nm (2.2 lbf.ft).
4.Position wiper arm to tail door and connect
washer tube.
5.Tighten wiper arm nut to 20 Nm (15 lbf.ft) and
fit nut cover.
6.Fit tail door water shedder.
7.Fit tail door trim casing.

+ DOORS, REPAIRS, Trim casing - tail
door.
8.Fit spare wheel to tail door.

LIGHTING
86-2-6 REPAIRS
Lamp - tail
$% 86.40.70
Remove
1.Remove 4 screws securing tail lamp to body.
2.Disconnect multiplug from tail lamp.
3.Remove tail lamp.
Refit
1.Position tail lamp to body and connect
multiplug.
2.Secure tail lamp to body with screws.
Lamp - front fog up to 03MY
$% 86.40.95
Remove
1.Raise front of vehicle, one side.
2. For RH lamp: Remove 7 screws securing
wheel arch liner extension to liner and bumper
valance and remove liner extension.
Disconnect lamp multiplug from harness.
3. For LH lamp:Remove front bumper assembly.

+ EXTERIOR FITTINGS, REPAIRS,
Bumper assembly - front.

LIGHTING
REPAIRS 86-2-7
4.Remove 4 screws and remove lamp.
Refit
1.Fit new lamp and secure with screws.
2. For LH lamp:Fit front bumper assembly.

+ EXTERIOR FITTINGS, REPAIRS,
Bumper assembly - front.
3. For RH lamp: Connect multiplug to harness.
Fit wheel arch liner extension, secure to
bumper valance and liner with screws.
4.Lower vehicle.
Lamp - front fog from 03MY
$% 86.40.96
Remove
1.Remove the front bumper finisher.

+ EXTERIOR FITTINGS, REPAIRS,
Trim finisher - bumper - front - from 03MY.
2.Remove 3 screws securing the fog lamp to the
bumper.
3.Disconnect the fog lamp multiplug and remove
the fog lamp.
Refit
1.Position the fog lamp to the bumper, connect
the multiplug and secure with screws.
2.Fit the front bumper finisher.

+ EXTERIOR FITTINGS, REPAIRS,
Trim finisher - bumper - front - from 03MY.

BODY CONTROL UNIT
86-3-14 DESCRIPTION AND OPERATION
Central Door Locking (CDL)
The BCU carries out the logic control operation for CDL. A CDL switch is mounted on the fascia panel and has two
inputs to the BCU, one for lock and one for unlock.
Door locking and unlocking can be performed using the remote transmitter in the keys and the receiver unit located
above the vehicle's headlining, behind the rear sunroof aperture. The receiver detects the signals sent from the
remote transmitter and sends a decoded signal to the BCU for processing.
Four methods of door locking are available:
lRemote handset locking.
lVehicle key locking.
lCDL switch locking.
lSpeed related locking.
Two security levels of door locking are available, CDL and Superlocking. The anti-theft alarm system works in
conjunction with the CDL system.
Electric windows and sunroof
The BCU controls the logical operations and the timing periods for the electric front windows. The rear windows are
hard-wired and the two electric sunroofs are controlled by a dedicated ECU which is enabled by the BCU.
The front windows are electrically operated using two rocker switches located in the centre console. Electric motors
are located in each of the front doors.
The rear windows are enabled by the IDM controlling the operation of the rear window relay located in the passenger
compartment fuse box.
Wipers and washers
The wiper and washer functions are controlled by the BCU and the IDM.
The front wipers and washers are operated from the switch stalk located on the right hand side of the steering column
and only operate when the ignition switch is in position I or II. The front wipers are operated by a motor located below
the windscreen plenum.

+ WIPERS AND WASHERS, DESCRIPTION AND OPERATION, Description.
The BCU controls the wiper motor frequency of operation via the IDM when intermittent wipe or wash is selected. The
front intermittent wipe option features five different intermittent delay periods. The shortest delay period is 3 seconds
and this is increased by 2 second increments up to a maximum delay of 11 seconds. The desired delay period for the
front wipers is set by the position of the rotary switch located on the wiper column stalk.
The rear wiper switch is located on the instrument pack cowl and is latched when pressed. The rear wiper electric
motor is located in the tail door. The rear wiper operation is controlled according to a programmed strategy via the
BCU and the IDM. The BCU also checks for a signal from either the reverse lamp switch located in the vehicle gearbox
(manual gearbox models) or the gear position switch (automatic gearbox models) for operating the rear wipers when
the vehicle is in reverse. The rear wiper and washer only operate when the ignition switch is in position II.
The front and rear washer pumps and the headlamp powerwash (where fitted) are also controlled through the BCU.
The washers are operated from electric pumps attached to the washer reservoir located in the left hand wheel arch.
The front wash switch is located on the wiper column stalk and is pulled towards the steering wheel to select the
washer function. When the front washers are operated, the wipers are also activated for three full cycles. The rear
wash switch is located on the instrument pack cowl. The BCU programme can be configured in one of two modes of
operation:
lNo wiper operation when the wash switch is pressed.
lWiper action after an initial delay of 400 ms.
Headlamp wash is activated by the BCU via the IDM and operates when the headlamps are on and the front washers
function is selected.

ALARM SYSTEM AND HORN
REPAIR 86-4-25
REPAIR
Switch - central door locking
$% 86.26.30
Remove
1.Carefully remove clock assembly from louvre
panel.
2.Disconnect multiplug from door lock switch.
3.Remove door lock switch from clock.
Refit
1.Fit door lock switch to clock assembly.
2.Connect multiplug to door lock switch.
3.Position clock assembly and push to secure in
position.
Switches - horn
$% 86.30.01
Remove
WARNING: It is imperative that before any
work is undertaken on the SRS system the
appropriate information is read thoroughly.
1.Disconnect both battery leads, negative lead
first, and wait 10 minutes.
2.Remove driver's airbag module.

+ RESTRAINT SYSTEMS, REPAIRS,
Airbag module - drivers.
3.Release horn switch multiplugs and leads from
steering wheel base.
4.Disconnect horn switch multiplugs from
harness.
5.Disconnect horn switch multiplug from rotary
coupler harness.
6.Remove screw securing earth leads to steering
wheel.
7.Using a broad round edged tool, carefully prise
horn switches from steering wheel.
Refit
1.Fit to steering wheel and connect multiplugs.
2.Fit earth leads and secure with screw.
3.Secure leads and multiplugs to base of steering
wheel.
4.Fit driver's airbag module.

+ RESTRAINT SYSTEMS, REPAIRS,
Airbag module - drivers.

IN CAR ENTERTAINMENT
86-6-4 DESCRIPTION AND OPERATION
Description
General
The in car entertainment (ICE) system allows the driver and passengers to listen to audio output from the speakers
or optional headphones inside the vehicle. Buttons or knobs on the radio cassette allow changes of levels or
selections during the various modes of operation. The system can be controlled from the fascia mounted radio
cassette, or optional remote control switches on the left hand side of the steering wheel. High line systems may also
have rear headphone amplifiers that have some control of the system via the radio cassette player.
One or two amplified aerials located in the rear side windows send radio signals to the radio cassette player. On high
line systems a power amplifier and a CD-autochanger may be located under the front seats. Speakers are located in
the lower door panels, additional speakers may be located in upper door trim, the A-post and the tail door. A display
screen shows the user the current system status.
The ICE supplied varies with trim level and market. Vehicles may not have all of the speakers, amplified aerials, CD-
autochanger, rear headphone amplifiers or power amplifier.
Base system radio cassette
The base radio cassette has buttons for LD (loudness) AM, FM, EJECT (tape), Reverse, Base/Balance, treble, MAN
forward and reverse. The base radio cassette is located in the center of the fascia and contains the radio and tape
player, four clips (accessible through holes in the front of the unit) secure the unit in the fascia. To remove the unit
the four clips must be released with a special tool. The base system can be controlled from the fascia mounted radio
cassette. A logic control circuit in the radio cassette player controls the operation in the various control modes.
The radio cassette has a display screen, the information shown can be the current radio frequency, tape operating,
bass or loudness settings. Power for the illumination on the radio cassette is supplied from the passenger
compartment fuse box. A main fuse is also located in the connector socket area on the back of the radio cassette.
Security code function
A combination of buttons on the radio cassette are used to input and change security codes. Security codes make the
unit unusable if the unit is disconnected from the vehicle without deactivating the security code. The radio cassette
has an internal memory chip that stores the code information, if the power is removed from the unit the chip will
activate the security code feature. For this reason the security code feature must be deactivated before the unit is
removed or the vehicles battery is disconnected.
Audio functions
The radio cassette has buttons for the following audio functions: LD (loudness), bass/balance, fader, treble and
volume.
Cassette functions
The radio cassette has buttons for the following cassette functions: eject, forward, reverse and tape reversal.
Multi function buttons
The function of presets 1-6 and the MAN button depends on current mode of operation and allows selection of radio
band, radio on, tape track and search/seek functions. The MAN button is mode dependent, when pressed the button
allows manual operation or alternate mode selections such as manual tuning.
Internal memory
An internal memory chip stores the station presets and security code, power is supplied internally to the chip via a
permanent power feed, supplied from the passenger compartment fuse box.