1995 LAND ROVER DISCOVERY wiring

76CHASSIS AND BODY
38
REPAIR SUNROOF ASSEMBLY - ELECTRICAL, FRONT
AND REAR
Service repair no - 76.82.59
Remove
Refer to sunroof components illustration J5483
1.Ensure sunroof is in normally closed position.
2.Disconnect battery negative lead.
3.Remove headlining.
See headlining.
4.Disconnect electric motor wiring plug.See
sunroof electric motors.
5.Remove screws and detach electric motor from
clamping frame.
6.Disconnect drain tubes from each side of
clamping frame.
7.Remove 13 fixings and remove clamping frame
from upper frame.
8.Remove upper frame assembly.
Refit
9.Position upper frame assembly into roof
aperture.
10.Locate clamping frame and reconnect drain
tubes.
11.Loosely fit screws, centralise upper frame and
clamping frame assemblies and then tighten
screws.
12.Reverse removal procedure.

CHASSIS AND BODY
39
REPAIR SUNROOF ELECTRIC MOTORS
Service repair no - 76.82.84/85
FRONT MOTOR
Remove
1.Disconnect battery negative lead.
2.Ensure sunroof is in normally closed position
NOTE: If the electric motor has failed the
sunroof can be closed manually using an
allen key to turn motor spindle A.
3.Remove switch panel from stowage pocket
panel
4.Remove interior lamp from stowage pocket
panel
5.Remove alarm ultrasonic unit.
6.Unscrew ten fixings and remove stowage pocket
from headlining.
7.Disconnect motor wiring multiplug.
8.Remove three screws and motor.
Refit
9.Reverse removal procedure.
CAUTION: Ensure the motor is aligned
with fixing holes and the sunroof is in the
normally closed position. DO NOT rotate
the motor drive spindle in the rack - this may
result in incorrect operation of the sunroof.REAR MOTOR
Remove
1.Disconnect battery negative lead.
2.Ensure sunroof is in normally closed position
NOTE: If the electric motor has failed the
sunroof can be closed manually using an
allen key to turn motor spindle.
3.Remove headlining.
See headlining.
4.Disconnect motor wiring multiplug.
5.Remove three screws and motor.
Refit
6.Reverse removal procedure.
CAUTION: Ensure the motor is aligned
with fixing holes and the sunroof is in the
normally closed position. DO NOT rotate
the motor drive spindle in the rack - this may
result in incorrect operation of the sunroof.

CHASSIS AND BODY
47
REPAIR
14.Remove 2 screws securing louvre panel.
15.Remove louvre panel from dash panel.
Refit
16.Position louvre panel, feed harness connectors
through their correct apertures,and align to dash
panel.
CAUTION: When refitting avoid trapping of
electrical wiring.
17.Fit and tighten screws securing louvre panel.
18.Fit panel retaining screw cover.
19.Position heater control unit to panel and secure
with screws.
20.Fit heater graphic display panel and secure with
screws.
21.Fit heater control and blower switch knobs.
22.Fit clock.
See ELECTRICAL, Repair, clock.
23.Position coin tray and secure to tags.
24.Position radio cage, feed electrical connectors
and aerial through cage, and position to panel.
25.Bend back radio cage retaining tags.
26.Fit radio.
See ELECTRICAL, Repair, radio.
27.Connect battery negative lead.DASH PANEL ASSEMBLY
Service repair no - 76.46.23
Remove
1.Move front seats to rearmost position.
2.Disconnect battery negative lead.
3.Disconnect air bag multiplugs under dash panel.
CAUTION: When air bags are fitted,
reference must be made to the Airbag
Supplementary Restraint System section.
4.Remove passenger glove box.
5.Remove driver's side access panel.
6.Remove centre console assembly.
See centre
console.
7.Remove airbag from steering wheel.See
SUPPLEMENTARY RESTRAINT SYSTEM,
Repair, driver's airbag module.
8.Remove passenger's airbag from dash panel.
See SUPPLEMENTARY RESTRAINT SYSTEM,
Repair, passenger's airbag module.
9.Release clamp and lower steering column.
10.Remove steering wheel.
See STEERING,
Repair, steering wheel.
11.Remove column switch.See
SUPPLEMENTARY RESTRAINT SYSTEM,
Repair, column switch assembly.
12.Remove instrument binnacle.See
ELECTRICAL, Repair, instrument binnacle.
13.Remove radio.See ELECTRICAL, Repair,
radio.
14.Remove exterior mirrors switch panel.
15.Remove coin tray.
16.Remove switch panel.
17.Remove clock.
18.Undo screw securing mounting bracket and
position passenger's side relay assembly aside.
19.Set heater controls fully clockwise.

CHASSIS AND BODY
49
REPAIR Refit
CAUTION: When refitting avoid trapping
electrical wiring.
29.Reverse removal procedure.
30.With assistance: Position dash panel and
connect dash harness multiplugs to fusebox and
main harness.
31.Reverse removal procedure. Ensure dash panel
upper bracket studs are located before the 4
lower brackets.
32.Reverse removal procedure. Disconnect
glovebox switch Lucars to ease fitting of relay
bracket.WINDSCREEN GLASS
Service repair no - 76.81.01
Information
The following equipment is required:
·Cutting wire and handles
·Windscreen repair kit (see Technical
Bulletin).
See Electrical Trouble Shooting
Manual.Windscreen Glass Replacement.
·Sealant applicator gun.
·Suction cup lifters.
The following materials are included in the windscreen
repair kit:
·Glass cleaning solvent - 'Betawipe' Glass
activator (yellow cap).
·Cotton buds.
·Glass primer - 'Betaprime'(green cap).
·Body primer - 'Betaprime' paint/plastic
primer (red cap).
·Betaseal Adhesive sealant.
NOTE: The adhesive sealant cures in 6 to 8
hours
CAUTION: Once existing sealant is cut, the
exposed surfaces oxidises in
approximately 90 minutes. The refit
procedure must be completed within this time
span to prevent the sealant oxidising, to effect a
satisfactory joint.
CAUTION: If the windscreen aperture body
flange shows signs of corrosion it must be
treated with anti corrosion primer and
repainted. Newly painted areas must then be left
for 8 hours or more before applying adhesive
sealant.

80HEATING AND VENTILATION
2
REPAIR 8.Disconnect 4 multiplugs and position harness
aside.
NOTE:Do not carry out further
dismantling if component is removed for
access only.
9. Fan speed switch:remove fan speed switch
slide and push out fan speed switch.
10.Pull out light bulb disconnect terminals and
remove fan speed light strip.
11.Unclip 3 heater control cables from control unit.
12. Microswitch:Unclip 3 micro switches.
13.Cut cable tie and release wiring harness from
control unit.
14.Remove heater control unit.
Refit
15.Reverse removal procedure. Check the
satisfactory function of the controls before fitting
louvre vent panel.CONTROL CABLES
Service repair no - 80.10.06 - Air flow
Service repair no - 80.10.25 - Temperature control
RH
Service repair no - 80.10.26 - Temperature control
LH
Remove
1.Release fascia centre louvre vent panel from its
fitted position to gain access to rear of panel.
See CHASSIS AND BODY, Repair, Dash
Panel Central Louvre Panel
2.Open glove box, manoeuvre side springs
through cut-outs and lower lid.

80HEATING AND VENTILATION
6
REPAIR BLOWER MOTOR UNIT - HEATER AND AIR
CONDITIONING
Service repair no - 80.20.17
Service repair no - 82.25.54.
Remove
1.Move seats to rear most position.
2.Disconnect battery negative lead.
3.Remove fascia panel assembly.
See CHASSIS
AND BODY, Repair, Dash Panel Assembly
4.Remove 2 nuts securing lower brackets to
toeboard.
5.Manoeuvre blower unit from heater unit and
remove.
Refit
6.Reverse removal procedure. Ensure seal
between blower and heater unit is tight.BLOWER MOTOR
Service repair no - 80.20.17
Service repair no - 82.25.33.
Remove
1.Remove blower motor unit.
See Blower Motor
Unit - Heater and Air Conditioning
2.Release wiring harness retaining clip.
3.Remove 3 screws securing casing.
4.Remove blower motor assembly.

AIR CONDITIONING
3
FAULT DIAGNOSIS FAULT CAUSE REMEDY
1. Overcharge of refrigerant. 1. Discharge, evacuate and charge
system.
A.
HIGH HEAD2. Air in system. 2. Discharge system, fit new drier,
PRESSUREevacuate and charge system.
3. Condenser air passage clogged 3. Clean condenser of debris.
with dirt or other foreign matter.
4. Condenser fan motor defective. 4. Replace motor.
5. Incorrect voltage to fan motor. 5. Check voltage.
1. Undercharge of refrigerant; 1. Evacuate and charge system.
B.evident by bubbles in sight Check for leakage.
LOW HEADglass while system is operating
PRESSURE2. Split compressor gasket or 2. Replace gasket and/or reed
leaking valves. valve. Fit new drier, evacuate and
charge system.
3. Defective compressor. 3. Repair or replace compressor.
1. Loose drive belt 1. Check belt tension.
2. Refrigerant flooding through
evaporator into suction line; evident
by ice on suction line and suction
service valve.2. Check thermobulb. Bulb should be
securely clamped to clean horizontal
section of copper suction pipe.
C.3. Expansion valve stuck open. 3. Replace expansion valve.
HIGH4. Leaking compressor valves, 4. Replace valves and/or
SUCTIONvalve gaskets and/or service gaskets. Fit new drier
PRESSUREvalves. evacuate and charge system.
5. Receiver/drier blocked; evident 5. Fit new drier, evacuate
by temperature difference and charge system.
between input and output lines.
1. Expansion valve thermobulb not 1. Warm thermobulb with hand.
operating. Suction should rise rapidly to 1.4 bar
20 lb/in
2or more. If not replace
expansion valve.
2. Expansion valve sticking closed. 2. Check inlet side screen.
D.Clean if clogged. Refer
LOWto C-2 and C-3.
SUCTION3. Moisture freezing in expansion valve
orifice. Valve outlet tube will frost
while inlet hose tube will have little or
no frost. System operates
periodically.3. Fit new drier, evacuate and charge
system.
4. Dust, paper scraps, or other debris
restricting evaporator blower grille4. Clean grilles as required.
5. Defective evaporator blower motor,
wiring, or blower switch.5. Refer to Fault Diagnosis Chart for
blower motor.

AIR CONDITIONING
7
REPAIR
12.Disconnect receiver/drier pipes at condenser
unions.
13.Remove retaining bracket from side pipe.
14.Remove LH pipe from condenser and discard 'O'
ring.
15.Remove 2 screws securing receiver/drier
bracket.
16.Release pipes from lower clips and remove
receiver/drier assembly.
17.Remove 'O' ring from RH pipe
18.Remove 2 screws securing lower end of each
fan motor.
19.Remove 2 bolts and remove condenser lower
mounting bracket.
20.Remove 2 bolts and securing condenser upper
mounting bracket.
21.Remove upper mounting bracket and fan motor
assembly.
22.Remove 2 screws securing each side mounting
bracket and remove the brackets.
23.Transfer parts removed to new condenser.
24.Add 40 ml of refrigerant oil to new compressor to
compensate for oil loss.
Refit
25.Reverse removal procedure. 3 to 11.
26.Evacuate and recharge air conditioning system.
See Adjustment, Refrigerant Recovery
Recycling Recharging
27.Carry out leak test on disturbed joints.See
Adjustment, Leak Test System
28.Check air conditioning operation by carrying out
a System Test.
See Adjustment, System Test
CONDENSER FANS AND MOTORS
Service repair no - 82.15.01 - Motor
Service repair no - 82.15.03 - Fan
Remove
1.Remove condenser assembly.
See Condenser
2.Remove 4 bolts securing fan cowl to condenser.
3.Remove 3 bolts securing fan motor to cowl.
4.Remove fan motor assembly.
5.Remove 3 screws securing fan blades to motor.
6.Remove fan blades.
Refit
7.Reverse removal procedure. Ensuring that wiring
is clipped and no fouling of fan blade can occur.