1999 LAND ROVER DISCOVERY sunroof

CONTENTS
CONTENTS 21
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 ........................................................................................................................................ 76-6-13
REPAIRS
Sunroof - front ................................................................................................................................. 76-6-15
Sunroof - rear ................................................................................................................................ 76-6-16
Glass panel - sunroof ...................................................................................................................... 76-6-17
Motor - sunroof ............................................................................................................................... 76-6-18
Drive cable assembly ..................................................................................................................... 76-6-19
Switch pack - sunroof ..................................................................................................................... 76-6-20
ECU - sunroof ................................................................................................................................ 76-6-20
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

CONTENTS
26 CONTENTS
LIGHTING.................................................................................................. 86-2-1
ADJUSTMENTS
Headlamps beam alignment - up to 03MY ..................................................................................... 86-2-1
Headlamps beam alignment - from 03MY ...................................................................................... 86-2-2
REPAIRS
Lamp - front repeater - up to 03MY ................................................................................................ 86-2-3
Headlamp - up to 03MY .................................................................................................................. 86-2-4
Headlamp - from 03MY .................................................................................................................. 86-2-5
Lamp - tail ..................................................................................................................................... 86-2-6
Lamp - front fog up to 03MY ........................................................................................................... 86-2-6
Lamp - front fog from 03MY ............................................................................................................ 86-2-7
Housing - number plate lamp ......................................................................................................... 86-2-8
Motor - headlamp levelling ............................................................................................................ 86-2-9
Lamp - stop - centre high mounted (CHMSL) .............................................................................. 86-2-10
Lamp - tail/flasher - bumper ............................................................................................................ 86-2-10
Lamp - interior - front .................................................................................................................... 86-2-11
Lamp - interior - rear ..................................................................................................................... 86-2-11
Rheostat - panel lights dimmer ...................................................................................................... 86-2-12
Switch - hazard warning ................................................................................................................ 86-2-13
Switch - indicator and exterior lighting - combined ......................................................................... 86-2-13
Socket - accessory ........................................................................................................................ 86-2-14
Switch - front/rear fog lamps ......................................................................................................... 86-2-14
BODY CONTROL UNIT ............................................................................ 86-3-1
DESCRIPTION AND OPERATION
Description ...................................................................................................................................... 86-3-1
Operation ........................................................................................................................................ 86-3-19
REPAIRS
Body control unit (BCU) .................................................................................................................. 86-3-35
ALARM SYSTEM AND HORN.................................................................. 86-4-1
DESCRIPTION AND OPERATION
Alarm system component layout..................................................................................................... 86-4-2
Alarm system block diagram........................................................................................................... 86-4-4
Description ...................................................................................................................................... 86-4-5
Operation ........................................................................................................................................ 86-4-17
REPAIR
Switch - central door locking ......................................................................................................... 86-4-25
Switches - horn ............................................................................................................................. 86-4-25
Vehicle horn .................................................................................................................................. 86-4-26
Sounder - alarm ............................................................................................................................ 86-4-26
Sounder - battery backed-up (BBUS) ............................................................................................. 86-4-27
Switch - bonnet ............................................................................................................................. 86-4-27
Receiver - alarm system - models with sunroof ............................................................................. 86-4-28
Receiver - alarm system - models without sunroof ......................................................................... 86-4-28
Coil - passive immobilisation ........................................................................................................ 86-4-29

GENERAL DATA
04-23
Dimensions
* Measurement taken with vehicle at unladen weight.
Overall length - including towing hitch 4715 mm (185.6 in)
Overall length - including spare wheel 4705 mm (185.24 in)
Overall width (excluding mirrors) 1885 mm (74.2 in)
Overall height - Open sunroof * 2015 mm (79.3 in)
Overall height (without roof bars) * 1940 mm (76.40 in)
Minimum ground clearance * 253.5 mm (10.0 in)
Wheelbase 2540 mm (100.00 in)
Turning circle (kerb to kerb) 11.9 metres (39.1 feet)
Track - front 1540 mm (60.63 in)
Track - rear 1560 mm (61.42 in)

TORQUE WRENCH SETTINGS
06-19
Body
TORQUE DESCRIPTION METRIC IMPERIAL
Front and rear door hinges 30 Nm (22 lbf.ft)
Tail door hinge bolts 34 Nm (25 lbf.ft)
Door frames10 Nm (7 lbf.ft)
Regulator to glass6 Nm (4.4 lbf.ft)
Chassis cross member 25 Nm (18 lbf.ft)
Bulkhead to chassis bolts 45 Nm (33 lbf.ft)
Body to chassis bolts 45 Nm (33 lbf.ft)
Quarter light glass to frame 10 Nm (7 lbf.ft)
Glass lift motor to regulator 5 Nm (3.7 lbf.ft)
Tail door hand rail 10 Nm (7 lbf.ft)
Latch and motor assembly 7 Nm (5.2 lbf.ft)
Door handle7 Nm (5.2 lbf.ft)
Damper to step17 Nm (13 lbf.ft)
Throttle pedal assembly 13 Nm (10 lbf.ft)
Step assembly to chassis 45 Nm (33 lbf.ft)
Wing to sill finisher bracket 17 Nm (13 lbf.ft)
Front wing to body 17 Nm (13 lbf.ft)
Door mirror4 Nm (3 lbf.ft)
Roof bars32 Nm (24 lbf.ft)
Bonnet release lever 10 Nm (7 lbf.ft)
Front bumper to crash cans 13 Nm (10 lbf.ft)
Front bumper to side mountings 13 Nm (10 lbf.ft)
Mudshield10 Nm (7 lbf.ft)
Rear bumper45 Nm (33 lbf.ft)
Grab handle to body 3 Nm (2.2 lbf.ft)
Fascia26 Nm (19 lbf.ft)
Fascia to steering column bracket 11 Nm (8 lbf.ft)
Front seat to floor45 Nm (33 lbf.ft)
Second row seats to floor 45 Nm (33 lbf.ft)
Third row seats to lower rear quarter 22 Nm (16 lbf.ft)
Sunroof tray to frame 2 Nm (1.5 lbf.ft)
Solenoid securing cap 11 Nm (8 lbf.ft)
Support stay to alternator 25 Nm (18 lbf.ft)
Sunroof glass3 Nm (2.2 lbf.ft)
Motor to sunroof tray 2 Nm (1.5 lbf.ft)
Drive cable assembly to frame 2.5 Nm (1.8 lbf.ft)
Front and rear door striker bolts 26 Nm (19 lbf.ft)
Tail door striker bolts 26 Nm (19 lbf.ft)

FRONT SUSPENSION
DESCRIPTION AND OPERATION 60-17
The actuator has a forked end which locates on the bush in the short arm and is secured with a bolt and nut. The
piston rod of the actuator locates through a hole in a cast boss on the long arm which is fitted with a special bush. A
shoulder on the piston rod seats in a hole in the bush and a locknut on the end of the piston rod secures the rod to
the long arm and bush.
The front torsion bar is attached to the front chassis cross member. Two rubber bushes are fitted to the torsion bar
and are located in clamp plates. The clamp plates are located in slots in the cross member and secured with bolts.
The rear torsion bar is attached to the tubular cross member at the rear section of the chassis. Two rubber bushes
are fitted to the torsion bar and are located in clamp plates. The clamp plates are located in fabricated brackets
attached to the tubular cross-member and secured with bolts.
Two anti-roll bar links are mounted on brackets on the front and rear axles. Each anti-roll bar link is fitted with a
spherical bearing at each end. One bearing is attached to the link at a 90° angle. The threaded shank of the bearing
is located through a hole in a bracket on the axle and secured with a locknut; a washer is installed on the threaded
shank between the bearing and the bracket. The second spherical bearing is attached in-line with the link and locates
in the torsion bar on the left hand side and the long arm on the right hand side. The front anti-roll bar links are longer
than the rear links and are not interchangeable.
Accelerometers
Two accelerometers are used for the ACE system. The upper accelerometer is mounted on a bracket, behind the
headlining adjacent to the rear view mirror and the sunroof ECU. The lower accelerometer is located on a bracket on
the inner sill panel under the RH front floor.
The lower accelerometer is the primary sensor used to measure lateral acceleration of the vehicle for roll control. The
upper accelerometer is used by the ECU for roll correction and fault detection in conjunction with the lower
accelerometer.
Each accelerometer is a solid state capacitive acceleration sensor and operates on a 5 V supply from the ECU. The
upper and lower sensors can measure acceleration in the range of ± 1.10 g and return an output to the ECU of
between 0.5 and 4.5 V.
Failures of an accelerometer are recorded by the ECU and can be retrieved using TestBook. A special tool is required
to remove and replace a sensor in the bracket.

INTERIOR TRIM COMPONENTS
REPAIRS 76-3-21
11.Remove access panel from front edge of front
stowage pocket.
12.Remove screw securing front stowage pocket
to headlining.
13.Remove lens from front interior lamp.
14.Remove 2 nuts securing front interior lamp to
headlining.
15.Disconnect multiplug from front interior lamp.
16.Remove front interior lamp.
17.Remove 10 screws securing front stowage
pocket to headlining.
18.Disconnect 3 multiplugs from sunroof switches.
19.Remove front stowage pocket.
20.Remove caps from sun visor clips.
21.Remove screws and release both sun visor
clips.
22.Remove tail door aperture upper trim casing.
23.Remove rear sunroof aperture trim. 24.Remove front sunroof aperture trim.
25.Release end caps from all grab handles.
26.Remove 2 bolts securing each grab handle to
roof.
27.Remove all 4 grab handles.
28. Models with volumetric alarm: Release front
volumetric sensor from headlining and
disconnect multiplug.
29. Models with rear A/C:
aRelease rear A/C control panel from
headlining.
bDisconnect 2 multiplugs and 2 Lucar
connectors from rear A/C control panel.
cRemove rear A/C control panel.
30.Release rear interior lamp from headlining and
disconnect multiplug.
31.Remove rear interior lamp.

INTERIOR TRIM COMPONENTS
76-3-22 REPAIRS
32.Remove 2 clips securing rear of headlining to
roof.
33.Release rear sunroof switch from headlining.
34.Disconnect multiplug and remove rear sunroof
switch.
35.Remove screw securing headlining to roof.
36.With assistance, remove headlining.
37. Models with rear A/C:
aRemove foam pads from air vents.
bRelease 2 rear air vents from headlining.
cRelease 3 central air vents from headlining.
38.Remove 7 nuts securing each stowage pocket
to headlining and collect mounting plates.
39.Remove both pockets from headlining.
40.Remove 8 screws securing rear console to
headlining and collect 3 mounting plates.
41.Remove rear console from headlining.
Refit
1.Fit rear console and mounting plates to
headlining.
2.Fit and tighten nuts securing rear console to
headlining.
3.Fit both stowage pockets and mounting plates
to headlining.
4.Fit and tighten nuts securing stowage pockets
to headlining.
5. Models with rear A/C:
aFit 3 central air vents to headlining.
bFit 2 rear air vents to headlining.
cFit foam pads to air vents.
6.With assistance, position headlining in vehicle.
7.Fit and tighten screw securing centre of
headlining to roof.
8.Connect multiplug to rear sunroof switch.
9.Fit rear sunroof switch to rear console.
10.Fit clips securing rear edge of headlining to
sunroof.

INTERIOR TRIM COMPONENTS
REPAIRS 76-3-23
11.Position rear interior lamp to headlining and
connect multiplug.
12.Fit rear interior lamp to headlining.
13. Models with rear A/C:
aPosition rear A/C control panel to headlining
and connect multiplugs and Lucar
connectors.
bFit rear A/C control panel to headlining.
14. Models with volumetric alarm: Connect
multiplug to front volumetric sensor and fit
sensor to headlining.
15.Fit grab handles to headlining and secure with
bolts.
16.Fit end caps to grab handles.
17.Fit front sunroof aperture trim.
18.Fit rear sunroof aperture trim.
19.Fit tail door aperture upper trim casing.
20.Fit sun visor clips to headlining and secure with
screws.
21.Fit caps to sun visor clips.
22.Position front stowage pocket to headlining and
connect multiplugs to sunroof switches.
23.Fit and tighten 10 screws securing front
stowage pocket to headlining.
24.Connect multiplug to front interior lamp.
25.Fit front interior lamp to headlining and secure
with nuts.
26.Fit lens to front interior lamp.
27.Fit and tighten screw securing front stowage
pocket to headlining.
28.Fit access panel to front edge of front stowage
pocket.
29.Position sun visor to headlining and secure to
clip.
30.Connect multiplug to sun visor.
31.Fit and tighten screws securing sun visor to
headlining.
32.Repeat process for second sun visor.
33. Models with premium ICE: Position both 'A'
post trim casings and connect multiplugs to
speakers.
34.Fit both trim casings to 'A' posts and secure
with clips.
35.Fit both 'B' post upper trim casings.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - upper - 'B' post.
36.Fit both 'D' post trim casings.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - 'D' post.