1999 LAND ROVER DISCOVERY door lock

REAR SUSPENSION
64-22 DESCRIPTION AND OPERATION
Off-road mode (ORM)
ORM is used to raise the rear of the vehicle from normal ride height to the ORM ride height of 100 mm between the
tip of the bump stop and the axle.
ORM is activated by depressing the ORM switch located on the fascia for not less than 0.5 seconds. With the engine
running, all doors closed and the vehicle speed below 18 mph (30 km/h), the audible warning will sound once and the
ORM warning lamp in the instrument pack will start to flash when the switch is released. The compressor will be
started and the air control valves will be energised by the ECU to inflate the air springs and raise the rear of the vehicle.
When the full ORM height is reached, the ECU will terminate compressor operation and close the air valves. The ORM
warning lamp will stop flashing and remain continuously illuminated to inform the driver that the SLS system is in ORM.
When ORM is no longer required, depressing the ORM switch for not less than 0.5 seconds with all doors closed will
lower the SLS to normal ride height. The audible warning will sound once and the ORM warning lamp will flash as the
suspension lowers. The ECU energises the air control valves and the exhaust valve to release air pressure from the
air springs. When standard ride height is reached the ORM warning lamp will extinguish and the ECU will de-energise
the air control valves and the exhaust valve solenoids.
If the SLS is in ORM and the vehicle speed exceeds 18 mph (30 km/h), the ECU will lower the SLS to standard ride
height. The driver will be informed of this by an audible warning and the ORM warning lamp flashing as the suspension
lowers. When normal ride height is achieved, the ORM warning lamp will extinguish.
At sea level, the time to change the SLS from normal ride height to ORM or visa versa will take between 15 and 20
seconds.
If the ECU determines that conditions are not correct for SLS operation, i.e.; axle articulation or system fault, the
audible warning will sound three times to inform the driver that the ORM request has not been granted.
Extended mode
The extended mode is automatically operated by the ECU and requires no input from the driver. Extended mode
operates when the chassis is grounded causing the rear wheels to spin. This information is generated by the ABS
function of the SLABS ECU.
When the ECU senses that the chassis is grounded and the vehicle speed is less than 6 mph (10 km/h), the ECU will
operate the compressor and energise the air control valves for 25 seconds to raise the rear of the vehicle. This
operates irrespective of the mode that the SLS system is in at that time. To inform the driver, the ORM warning lamp
will flash continuously at all times that the system is in extended mode.
The driver can exit the extended mode by depressing the ORM switch for not less than 0.5 seconds or by exceeding
8 mph (13 km/h).
Remote handset SLS control
The remote handset is an accessory item which allows the SLS to be operated between normal ride height and bump
stop height to allow easier connection and disconnection of trailers. The remote handset is similar in appearance to
that of the remote door locking handset but does not have an integral key. A circular button with an arrow is used to
raise the SLS and an oval button with the 'Land Rover' logo is used to lower the SLS.
The remote handset control requires all doors to be closed and the ignition to be in position II, but the engine does
not need to be running.
Pressing the lower button will signal the SLABS ECU, via the RF receiver and the BCU, to energise the exhaust valve
and air control valves. The SLS will lower up to 60 mm (2.36 in) below normal ride height if the button is held. If the
button is released the SLS will stop at that point.
Pressing the raise button will signal the SLABS ECU, via the RF receiver and the BCU, to start the compressor and
energise the exhaust valve and air control valves. The SLS will raise to normal ride height if the button is held. If the
button is released the SLS will stop at that point.
When raising or lowering the SLS using the remote handset, the SLS warning lamp will flash and the audible warning
will sound when the system is operating. When the SLS is fully lowered the warning lamp will stay illuminated. The
SLS will reset to normal ride height if the vehicle speed exceeds 3 mph (5 km/h) for 10 seconds when the SLS is
lowered.

DOORS
REPAIRS 76-1-1
DOORS REPAIRS
Door - front
$% 76.28.01.99
Remove
1.Release 'A' post lower trim and position aside.
2.Release and disconnect multiplugs from lower
'A' post.
3.Release harness sleeve and pull harness
through 'A' post.
4.Remove roll pin from door check strap.
5.Release check strap from 'A' post.
6.Discard roll pin.
7.Remove 2 'C' clips from door hinges.
8.With assistance raise and remove door. Refit
1.With assistance position door to hinges.
2.Fit 'C' clips to hinge pins.
3.Position check strap to 'A' post and secure with
new roll pin.
4.Feed door harness through 'A' post.
5.Connect and secure multiplugs at lower 'A'
post.
6.Connect harness sleeve to 'A' post and door.
7.Fit 'A' post finisher.
8.Check door for flush fit to adjacent panels and
door edges for equal gap. If adjustment is
necessary:
aOpen door
bPlace a wooden block on jack and position
jack to support door lower edge.
cLoosen 4 bolts securing hinges to door.
dLoosen 2 Torx bolts securing door latch
striker.
eUse jack to assist with door alignment.
fTighten hinge bolts.
gRemove jack, close door and check for
correct alignment.
hWhen alignment is correct, tighten door
hinge bolts to 30 Nm (22 lbf.ft).
iAdjust door latch striker and tighten Torx
bolts to 26 Nm (19 lbf.ft).

DOORS
76-1-2 REPAIRS
Door - rear
$% 76.28.02.99
Remove
1.Release 'B' post lower trim casing and position
aside.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - lower - 'B' post.
2.Release multiplugs from within 'B' post and
disconnect.
3.Release harness sleeve and pull through 'B'
post.
4.Remove roll pin from check strap and discard.
5.Release check strap from 'B' post.
6.Remove 2 'C' clips securing door to each hinge.
7.With assistance raise and remove door. Refit
1.With assistance position door to hinges.
2.Fit 'C' clips to hinge pins.
3.Position check strap to 'B' post and secure with
new roll pin.
4.Feed door harness through 'B' post and
connect multiplugs.
5.Connect harness sleeve to 'B' post and door.
6.Fit 'B' post lower trim casing.
+ INTERIOR TRIM COMPONENTS,
REPAIRS, Trim casing - lower - 'B' post.
7.Check door for flush fit to adjacent panels and
door edges for equal gap. If adjustment is
necessary:
aOpen door.
bPlace a wooden block on jack and position
jack to support door lower edge.
cLoosen 4 bolts securing hinges to door.
dLoosen 2 Torx bolts securing door latch
striker.
eUse jack to assist with door alignment.
fTighten hinge bolts.
gRemove jack, close door and check for
correct alignment.
hWhen alignment is correct, tighten door
hinge bolts to 30 Nm (22 lbf.ft).
iAdjust door latch striker and tighten Torx
bolts to 26 Nm (19 lbf.ft).

DOORS
REPAIRS 76-1-3
Door - tail
$% 76.28.19.99
Remove
1.Remove spare wheel from tail door.
2.Remove tail door trim casing.

+ DOORS, REPAIRS, Trim casing - tail
door.
3.Carefully release water shedder from tail door.
4.Disconnect multiplug from door latch.
5.Disconnect multiplug from rear wiper motor.
6.Disconnect 2 Lucars from Heated Rear
Window (HRW).
7.Disconnect multiplug from number plate lamp.
8.Remove 2 screws securing Centre High
Mounted Stop Lamp (CHMSL) cover to tail door
glass.
9.Remove CHMSL cover.
10.Disconnect 2 Lucars from CHMSL.
11.Attach draw string to CHMSL wires and draw
wires through tail door. Disconnect draw string
from wires.
12.Tape draw string in tail door to retain its
position.
13.Release washer tube from rear of wiper arm. 14.Release 3 clips securing harness to tail door.
15.Release harness sleeve from door outer edge
and feed harness and washer tube through
door.
16.Remove spring clip securing check strap to tail
door aperture and collect washer.
17.Mark position of hinges.
18.Support the tail door on a jack, using a block of
wood to protect the door.
19.Remove 6 bolts securing tail door hinges to
body and, with assistance, remove tail door.

DOORS
76-1-4 REPAIRS
Refit
1.Support the tail door on a jack, using a block of
wood to protect the door.
2.With assistance position door. Fit securing
bolts but do not tighten at this stage.
3.Fit washer and spring clip securing check strap
to aperture.
4.Adjust position of tail door in relation to
aperture, ensuring gaps around all 4 edges
are consistent, and door closes cleanly onto
dove tail.
5.When tail door is correctly adjusted, tighten tail
door hinge bolts to 34 Nm (25 lbf.ft).
6.Feed harness and washer tube through outer
edge of door and connect harness sleeve to
door.
7.Secure harness to tail door with clips.
8.Connect washer tube to rear of wiper arm.
9.Remove tape from draw string and secure to
CHMSL wires.
10.Draw wires through tail door and connect
Lucars to CHMSL.
11.Fit CHMSL cover and secure with screws.
12.Connect multiplug of number plate lamp.
13.Connect Lucars to HRW.
14.Connect multiplug to rear wiper motor.
15.Connect multiplug to door latch.
16.Fit water shedder to door.
17.Fit tail door trim casing.

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

DOORS
REPAIRS 76-1-11
Latch and motor - front door
$% 76.37.12
Remove
1.Remove front door frame.

+ DOORS, REPAIRS, Glass - front or
rear door.
2.Release exterior handle control rod from latch.
3.Release and disconnect sill button lock rod
from latch.
4.Disconnect multiplug from motor.
5.Remove 3 Torx screws securing latch and
motor assembly to door.
6.Remove latch and motor assembly through
aperture in the lower section of the door. 7.Disconnect release cable from latch and
remove latch and motor assembly.
Refit
1.Connect release cable to latch.
2.Position latch and motor assembly to door. Fit
Torx screws securing latch to door and tighten
to 7 Nm (5.2 lbf.ft).
3.Connect multiplug to motor.
4.Connect exterior handle control rod to latch.
5.Connect sill button lock rod to latch.
6.Fit front door frame.

+ DOORS, REPAIRS, Glass - front or
rear door.

DOORS
76-1-12 REPAIRS
Latch and motor - rear door
$% 76.37.13
Remove
1.Remove rear door frame.

+ DOORS, REPAIRS, Glass - front or
rear door.
2.Release exterior handle control rod from latch.
3.Release sill button lock rod from door latch.
4.Disconnect multiplug from motor.
5.Remove 3 Torx screws securing latch and
motor assembly to door.
6.Remove latch and motor assembly through
lower aperture in door. 7.Open security flap on latch.
8.Disconnect release cable from latch.
Refit
1.Connect release cable to latch and close
security flap.
2.Position latch to door, fit Torx screws securing
latch to door and tighten to 7 Nm (5.2 lbf.ft).
3.Connect multiplug to motor.
4.Connect exterior handle control rod to latch.
5.Connect sill button lock rod to latch.
6.Fit rear door frame.

+ DOORS, REPAIRS, Glass - front or
rear door.

DOORS
REPAIRS 76-1-13
Latch and motor - tail door
$% 76.37.16
Remove
1.Remove tail door trim casing.

+ DOORS, REPAIRS, Trim casing - tail
door.
2.Carefully release water shedder from tail door.
3.Release and remove control rod from exterior
handle and latch.
4.Release and remove sill button lock rod.
5.Disconnect multiplug from motor.
6.Remove release cable from clip.
7.Remove 3 Torx screws securing latch and
motor assembly to door.
8.Remove door latch.
9.Disconnect release cable from latch.
Refit
1.Connect release cable to latch.
2.Position door latch and motor assembly, secure
with Torx screws and tighten to 7 Nm (5.2 lbf.ft).
3.Position control rod and connect to exterior
handle and latch.
4.Position sill button lock rod and connect to
latch.
5.Secure release cable in clip.
6.Connect multiplug to motor.
7.Fit water shedder to door.
8.Fit tail door trim casing.

+ DOORS, REPAIRS, Trim casing - tail
door.
Handle - exterior - rear door
$% 76.58.02
Remove
1.Remove rear door trim casing.

+ DOORS, REPAIRS, Trim casing -
rear door.
2.Carefully release water shedder from door.
3.Release control rod from latch.
4.Remove Torx bolt securing exterior handle to
door.
5.Remove exterior handle.
6.Remove control rod from exterior handle.
Refit
1.Fit control rod to exterior handle.
2.Position exterior handle and secure to door with
Torx bolt.
3.Connect control rod to latch.
4.Fit water shedder to door.
5.Fit rear door trim casing.

+ DOORS, REPAIRS, Trim casing -
rear door.