door lock LAND ROVER DISCOVERY 1995 User Guide

CHASSIS AND BODY
7
REPAIR REAR SIDE DOORS
Service repair no - 76.28.02
Remove
1.Disconnect battery negative lead.
2.Detach the convoluted grommet from the 'B'
post.
3.Withdraw the door harness multiplugs from the
'B' post and disconnect them.
4.Remove the bolts and washers securing the
check strap to the 'B' post.
WARNING: Instruction 5 MUST BE carried
out with assistance.
5.Remove the door hinge 'C' clips from the hinge
posts and with assistance carefully lift the door
from the vehicle.
Refit
6.Reverse removal procedure. Fitting new 'C' clips
if the existing ones are worn or distorted.
7.Check the operation of the door and lock. If
necessary, adjust the door and striker.
Adjust
8.Adjust the door by adding or removing shims
between the hinge and the door to move the
door forward or rearward in the opening.
9.To adjust the door up, down or in and out of the
opening, loosen the screws securing the hinges
to the door, adjust as necessary and retighten
the screws to the correct torque value.
10.Adjustment of the door striker is identical to the
procedure for front doors.
NOTE: If it is necessary to remove the
hinges from the 'B' post they must be
refitted in exactly the same position, using
an equal thickness of shims to those removed.

CHASSIS AND BODY
9
REPAIR REAR SIDE DOOR LOCK, INSIDE AND OUTSIDE
RELEASE HANDLES
Service repair no - 76.37.13/32
Remove
1.Ensure that the window is in the fully closed
position.
2.Disconnect battery negative lead.
3.Remove the interior trim panel from the door.
See rear side door - trim panel.
4.Remove the plastic vapour barrier sheet.
5.Disconnect the inside release handle control rod
by pulling it from its location in the door lock.
6.Disconnect the sill locking control rod from the
lock by releasing the metal clip.
7.Disconnect the outside release handle control
rod by pulling it out of the plastic ferrule.
8.Remove the two countersunk screws from the
door edge and the single screw and shakeproof
washer from the inner door panel. Retrieve any
spacing washers which may be fitted between
the inner door panel and lock.
9.Withdraw the lock through the upper rear
opening in the inner door panel.
NOTE: If necessary the following items
can be removed.10.Remove the two nuts, shakeproof washers and
retaining bracket securing the outer release
handle which are accessible through the upper
rear cut-out on the inner door panel.
11.Carefully detach the handle from the outer door
panel.
12.Remove the two screws and plain washers
securing the inside release handle to the inner
door panel and withdraw the handle complete
with connecting rod.
13.Disconnect the sill button connecting rod from
the bellcrank and withdraw the rod complete with
sill button.
Sill locking bellcrank
14.Using a small screwdriver, or length of 3.175 mm
(1/8 in) diameter rod, press the plastic locking
pins through the respective square inserts in the
inner door panel.
15.Release the bellcranks from the inner door panel
and unhook the respective connecting rods.
16.Withdraw the bellcranks from inside the door
panels.
NOTE: When refitting the bellcranks the
locking pins are entered into the square
insert from outside and pressed in flush.

76CHASSIS AND BODY
10
REPAIR ADJUSTMENT-REAR SIDE DOOR LOCK AND
HANDLE
Service repair no - 76.37.47
Outside door release handle to lock
1.Disconnect the short off-set connecting rod at
the rear of the outer release handle, rotate the
rod clockwise or counter clockwise to shorten or
extend the operating length of the rod as
required.
NOTE: Door release should occur before
the total handle movement is achieved to
provide a small overthrow movement.
REAR SIDE DOOR GLASS AND REGULATOR
Service repair no - 76.31.45
Remove
1.Ensure that the window is in the fully closed
position and secure it with adhesive tape over
the top of the door to prevent the glass from
dropping down.
2.Disconnect battery negative lead.
3.Remove the door trim panel.
See rear side
door - trim panel.
4.Remove the plastic vapour barrier.
5.Where applicable remove the door actuator and
window lift motor.
See ELECTRICAL, Repair,
window lift motor - rear. See ELECTRICAL,
Repair, rear side door actuator units.
6.Remove the four window regulator securing
screws and shakeproof washers from the inner
door panel.
7.Carefully disengage the lifting arm stud from the
glass lifting channel and remove the window
regulator from the lower opening in the inner
door panel.
8.Remove the waist rail seal from the top of the
door panel.
9.Remove the single bolt, spring and plain
washers from inside the door, securing the
bottom of the short glass run channel.
10.Remove the two bolts, spring and plain washers
from the hinge face of the door.

76CHASSIS AND BODY
12
REPAIR REAR DOOR TRIM PANEL
Service repair no - 76.34.09
Remove
1.Remove the two screws securing the door pull
and remove it from the door.
2.Remove the finisher from the inner door handle.
3.Using a trim panel removing tool release the
seventeen trim panel fasteners and withdraw the
panel from the door.
4.If necessary remove the sixteen screws securing
the stowage bins to the trim panel and detach
the bins.
Refit
5.Reverse removal procedure.REAR DOOR LOCK AND INNER AND OUTER
RELEASE HANDLES
Service repair no - 76.37.16/74/77/78
Remove
1.Disconnect battery negative lead.
2.Remove the door pull, the trim panel and the
vapour protective sheet, to allow access to the
door handles and lock mechanisms.
3.Disconnect the inner release handle connecting
rod at the lock.
4.Remove the two screws securing the inner
handle and withdraw the handle complete with
connecting rod.
NOTE: Two identical 'Y' shaped levers
(bellcranks) are fitted to the rear door lock
mechanism and are referred to as inner
and outer 'Y' levers; the inner one being the
nearest to the inner door panel.
5.If fitted, remove the central locking actuator
control rod link from the actuator and from the
inner 'Y' lever.
6.Detach the remote button connecting rod at the
inner 'Y' lever and withdraw from inside the door.
7.Detach the lock and barrel connecting rods from
the upper leg of the inner 'Y' lever.

CHASSIS AND BODY
13
REPAIR 8.Remove the screws securing the lock control
mechanism pivot bracket and the door pull
mounting bracket, ease the bracket from the lock
barrel stem and remove from the door.
9.Remove the two screws and withdraw the
childproof lock actuator.
10.Disconnect the adjustable lock rod from the
outer 'Y' lever.
11.Remove the centre pin from the outer 'Y' lever
pivot and release the pivot from the door.
12.Remove the three lock securing screws and
manoeuvre the lock and 'Y' lever out of the door
panels.
13.Disconnect the number plate light leads from the
door harness.
14.Remove the 'E' clip securing the fulcrum to the
barrel stem and withdraw the fulcrum and lock
rod.
15.From inside the door panel remove the nuts and
washers securing the lock barrel and number
plate light housing.
16.Remove the logo from the housing and working
through the logo aperture, remove the single bolt
securing the housing.
17.Partially withdraw the housing and its rubber
seal from the door, displace the rubber grommet
from the door panel, withdraw the number plate
light leads and complete the removal of the
housing and seal from the door.
18.Remove the connecting rod from the outer door
handle lever.
19.Remove the two nuts and washers securing the
outer handle from inside the door panels and
detach the handle and seal.

76CHASSIS AND BODY
14
REPAIR Lock barrel and number plate light housing
Disassemble
NOTE: The lock barrel can only be
removed from its housing when the lock
barrel and number plate light housing is
removed from the door.
20.Remove the bolt securing the lock barrel
mounting bracket to the housing and withdraw
the assembled barrel and bracket.
21.Remove the 'O' ring seal from inside the
housing.
22.Remove the spring clip securing the barrel to the
bracket and withdraw the barrel and stem
assembly from the bracket complete with seal.
23.Remove the 'U' clip securing the stem to the
barrel and detach the seal from the inner face of
the barrel.
24.If the lock barrel and number plate light housing
is being renewed, remove the number plate
lights, harness and the housing mounting
bracket, from the existing housing and fit them to
the new housing.
Reassemble
25.Fit the stem to the barrel and secure with the 'U'
clip.
26.Position a new seal on the inner face of the
barrel, insert the stem and barrel into the
mounting bracket and secure with the spring clip.
27.Place a new 'O' ring seal on the inner face of the
barrel aperture in the housing.
28.Insert the assembled bracket and barrel into its
location in the housing, taking care not to disturb
the seal, and secure with the bolt.Refit
29.Fit the outer handle to the door and secure from
the inside with the two nuts and washers.
30.Fit the lock barrel and number plate light housing
by inserting the number plate light leads through
the aperture in the door panel and locating the
rubber grommet in the aperture. Insert the barrel
stem through the door, locate the housing on the
door panel, ensure that the seal seats correctly,
and secure with the single bolt and washer
through the logo aperture.
31.Connect the number plate light leads to the door
harness.
32.Fit the logo to the aperture in the housing.
33.Fit the fulcrum and connecting rod to the barrel
stem and secure with secure with the 'E' clip.
34.Fit the lock and assembled outer 'Y' lever,
secure the lock with the three screws, locate the
'Y' lever pivot and secure with the pin.
35.Fit the connecting rod from the outer handle
lever to the outer 'Y' lever.
36.Fit the childproof lock actuator and check that it
is functioning.
37.Insert the remote button and rod to the location
in the door.
38.Offer up the assembled inner 'Y' lever and
bracket, attach the barrel connecting rod to the
top clip of the upper leg and the rod from the
lock to the lower clip of the upper leg.
39.Locate the barrel stem in the insert on the
bracket.
40.Secure the bracket with the four screws; fitting
the door pull mounting bracket under the heads
of the top two screws.
41.Attach the remote button and the actuator
connecting rods to the 'Y' lever.
42.Fit the inner release handle and attach the
connecting rod to the lock.
43.Refit the vapour protective sheet, door trim panel
and door pull.

82AIR CONDITIONING
6
ADJUSTMENT SYSTEM TEST
1.Place the vehicle in a ventilated, shaded area
free from excessive draught, with the doors and
windows open.
2.Check that the surface of the condenser is not
restricted with dirt, leaves, flies, etc. Do not
neglect to check the surface between the
condenser and the radiator. Clean as necessary.
3.Switch on the ignition and the air conditioner air
flow control. Check that the blower is operating
efficiently at low, medium and high speeds.
Switch off the blower and the ignition.
4.Check that the evaporator condensate drain
tubes are open and clear.
5.Check the tension of the compressor driving belt,
and adjust if necessary.
6.Inspect all connections for the presence of
refrigerant oil. If oil is evident, check for leaks,
and repair as necessary.
NOTE: The compressor oil is soluble in
Refrigerant R134a and is deposited when
the refrigerant evaporates from a leak.
7.Start the engine.
8.Set the temperature controls to cold and switch
the air conditioner blower control on and off
several times, checking that the magnetic clutch
on the compressor engages and releases each
time.9.With the temperature control at maximum
cooling and the blower control at high speed,
warm up the engine and fast idle at 1000
rev/min. Check the sight glass for bubbles or
foam. The sight glass should be generally clear
after five minutes running, occasional bubbles
being acceptable. Continuous bubbles may
appear in a serviceable system on a cool day, or
if there is insufficient air flow over the condenser
at a high ambient temperature.
10.Repeat at 1800 rev/min.
11.Gradually increase the engine speed to the high
range, and check the sight glass at intervals.
12.Check for frosting on the service valves.
13.Check the high pressure hoses and connections
by hand for varying temperature. Low
temperature indicates a restriction or blockage at
that point.
14.Switch off the air conditioning blower and stop
the engine.
15.If the air conditioning equipment is still not
satisfactory, carry out a pressure test as
previously described in this section.
COMPRESSOR DRIVE BELT
Service repair no - 82.10.01.
Tdi -
See ENGINE, Repair, Compressor drive belt
V8i and MpiSee ENGINE, Repair, Drive belt

84WIPERS AND WASHERS
4
REPAIR WIPER BLADES
Service repair no - 84.15.05
Remove
1.Pull wiper blade away from screen.
2.Depress spring clip and withdraw blade from
hooked end of wiper arm.
Refit
3.Reverse removal procedure. 1 and 2.REAR WINDOW WASHER JET
Service repair no - 84.30.09
Remove
1.Turn washer jet in a clockwise direction to
release it from the rear quarter panel.
2.Remove rear quarter/speaker trim panel.
3.Feed washer tubing through rear quarter panel
to allow removal of washer jet.
4.Remove washer jet from tubing.
Refit
5.Reverse removal procedure. 1 to 4.
NOTE: The tubing run from the reservoir to
rear door washer jet differs between left
and right hand drive vehicles. On right
hand vehicles the tubing run is on the left hand
side of the roof. On left hand drive vehicles, the
right side.
See Description and operation,
Windscreen Wiper and Washer Operation

86ELECTRICAL
2
DESCRIPTION AND OPERATION ANTI-THEFT SYSTEM FUNCTION
Perimetric protection
Using the key in the correct sequence will turn on and
off perimetric protection only. When fully perimetrically
armed, all doors, and bonnet [hood] are protected
against unauthorised access. If the door key is used in
the normal manner the driver will be unaware of the
door key sequence. The time taken to lock or unlock
with the key must be less than 5 seconds. To prevent
unauthorised tampering, the alarm will sound if the
key is held in the unlocked position for longer than 5
seconds when armed. Cranking is disabled when
perimetric protection is armed.
NOTE: When key is turned left or right the
keyswitch input will be activated, in
conjunction with the sill button switch
when links are operated.
Volumetric protection
Using the handset transmitter will turn on and off
volumetric protection. In volumetric mode the vehicle
interior is protected using the ultrasonic sensor. Using
the handset also arms and disarms the vehicle
perimetrically. Cranking is disabled when volumetric
and perimetric protection is armed.
NOTE: If armed volumetrically the vehicle
CANNOT be disarmed using the key.
Alarm horn
When an intrusion is detected the alarm horn will
sound intermittently (Switzerland and Denmark
continuous horn sound) and the hazard lights flash
(where territorial regulations allow) for 30 seconds.
The alarm must be retriggered before alarm horn will
sound again.Vehicle status indication
Vehicle status is indicated by up to three devices: (a)
alarm horn, (b) hazard lights, (c) dash board LED.
When the vehicle arms in either mode the hazard
lights will flash three times and the LED will flash
rapidly for 10 seconds. LED will then flash at a slower
rate while vehicle is armed. When the vehicle disarms,
hazard lights will flash once and LED will extinguish. If
LED remains lit, it indicates that the alarm has been
triggered. Turning on ignition or arming the alarm will
extinguish LED. The LED will give a long pulse flash
to indicate the ultrasonic unit being activated.
Central locking
Central locking is controlled by the alarm ECU and
may be operated by the key, sill button(s) or handset.
The system works on both front doors on four door
vehicles or driver's door on two door vehicles.
NOTE: The central door locking system
will shut down for a short period after
more than 15 consecutive operations.
Inertia switch
An inertia switch is incorporated in the alarm system
ECU. If ignition is on and the vehicle receives an
impact sufficient to activate the inertia switch, the ECU
will signal to unlock central locking actuators and flash
hazard lights. Central locking will remain disabled for
30 seconds. To reset turn ignition off and then on after
the 30 second period has elapsed.
Ultrasonic unit
The unit operates by emitting an air pressure carrier
wave and receiving the wave back. Any disturbance
within the vehicle which disturbs the wave will be
detected, triggering the alarm.
When the volumetric sensor is activated it monitors
movement within the vehicle for 15 seconds before
detecting and responding to intrusions. If the sensor
detects movement within the vehicle it delays arming
until a 15 seconds quiet period has elapsed. If
continuous movement is detected the alarm will not
arm volumetrically.

ELECTRICAL
3
DESCRIPTION AND OPERATION Radio frequency system
The RF system uses four frequencies according to
market. If the coaxial aerial is not fitted system
performance will be impaired. Both ECU and handset
have a colour coded label.
Frequency Colour Territory
ECU/Handset
433.92 MHz Blue/black........................... UK, Ireland........................
224.5 MHz, Yellow/yellow............................ France...................
433.92 MHz Blue/Purple........................... Germany......................
433.92 MHz Blue/blue........................... Europe, not France, Switzerland, Italy, Denmark,..........................
Germany
433.92 MHz White/Blue........................... Switzerland, Denmark.......................
315.0 MHz Green/green............................. Rest of world, Italy, Australia....................
315.0 MHz Orange/Green............................. Gulf, Japan..................
Partially armed mode
If a door, tailgate or bonnet [hood] is left open when
the system is armed, the LED will not light for 10
seconds indicating a mislock condition. Hazard lights
will not flash. If an open door or tailgate is causing the
mislock, the starter motor is disabled. The alarm will
sound if ignition is turned to start position. If an open
bonnet [hood] is causing the mislock the starter motor
is disabled. The alarm will arm the volumetric part of
the system. If the door tailgate or bonnet [hood] is
subsequently closed, after a 5 second delay, the
doors will unlock and immediately lock and the system
will fully arm.
Handset transmitter
The handset LED will give one short flash when
button is pressed momentarily.
If button is held down the LED will light again after 2
seconds for 2 seconds, and extinguish until button is
released and repressed. The handset contains unique
information distinguishing it from other transmitters. It
also contains a set of 'random' rolling codes
programmed into the ECU before leaving the factory.
Each time the handset is pressed a different code is
transmitted to the ECU.
If handset is operated more than four times outside
the vehicle range (6 metres) or power supply is
removed, it will be necessary to re-sychronise handset
and the ECU by pressing the handset three times
within range and within 5 seconds.
NOTE: If both handsets are lost or
damaged when system is armed it will be
necessary to fit a new ECU with two
matching handsets.
Handset batteries
If handset LED flashes continuously when button is
pressed, the batteries need replacing. The hazard
lights will flash one 3 second pulse, instead of three
times upon arming vehicle.
Power up mode
The alarm system always remembers the state it was
left in when power was removed. If the alarm powers
up in an armed state and is subsequently triggered it
will give a warning that it will fully trigger unless
disarmed. This warning consists of short horn pulses
every two seconds for 15 seconds.
New born mode
When the ECU is first produced, it will be in its 'new
born' mode. In this mode it will respond to any remote
of the right frequency. This mode will be cancelled
when the ECU has received ten valid handset signals
without power interruption.
Engine cranking
It is only possible to crank the engine when ignition is
ON and alarm disabled.