1995 LAND ROVER DISCOVERY Workshop Manual

ELECTRICAL
37
REPAIR COOLANT TEMPERATURE AND FUEL GAUGES
Service repair no - 88.25.14 - Coolant temperature
gauge
Service repair no - 88.25.26 - Fuel gauge
Remove
1.Remove instrument cowl.
See Instrument
cowl and illumination board
2.Remove speedometer trip reset button sleeve.
3.Remove instrument face plate.
Coolant temperature gauge
4.Remove circuit board,See Circuit board
5.Remove 3 screws securing coolant temperature
gauge to binnacle, remove gauge.
Fuel gauge
6.Remove 3 screws securing fuel gauge to
binnacle, remove gauge.
Refit
7.Reverse removal procedure.SPEEDOMETER TRANSDUCER
Service repair no - 88.30.14
Remove
1.Position vehicle on ramp and chock wheels.
2.Raise ramp.
3.Disconnect multiplug from transducer.
4.Remove bolt securing transducer, remove
transducer.
Refit
5.Reverse removal procedure.

86ELECTRICAL
38
REPAIR REVERSE LIGHT SWITCH
Service repair no - 37.27.01
Manual Gearbox
Remove
Reverse light switch is located at rear of selector
housing, accessible from beneath vehicle.
1.Place vehicle on suitable ramp.
2.Disconnect the battery negative lead.
3.Disconnect electrical leads.
4.Release lock-nut.
5.Remove switch.
NOTE: Reverse light switch requires
re-setting on reassembly.
6.Select reverse gear.
7.Connect 12 volt supply and test lamp across
switch terminals.
8.Screw switch into housing until test lamp is
illuminated. Screw switch in a further half turn,
tighten locknut.
9.Connect electrical leads.
10.Reconnect the battery negative lead.HEATER/VENTILATION AND AIR CONDITIONING
CONTROL PANEL BULB
Service repair no - 86.45.73
Remove
1.Carefully pull 3 rotary knobs off switches.
2.Prise blower speed control knob off lever.
3.Remove 2 screws securing panel, ease panel
away from fascia.
4.Pull bulb from holder.
5.Insert new bulb in holder.
Refit
6.Reverse removal procedure.

ELECTRICAL
39
REPAIR CIGAR LIGHTER AND BULB
Service repair no - 86.65.60
Service repair no - 86.45.55
Cigar Lighter
Remove
1.Remove centre console.
See CHASSIS AND
BODY, Repair, Centre Console
2.Depress lugs securing cigar lighter, withdraw
lighter from centre console.
Bulb replacement
3.Remove bulb from holder.
Refit
4.Reverse removal procedure.OIL PRESSURE WARNING SWITCH - V8i
Service repair no - 86.65.30
Remove
1.Disconnect the battery negative lead.
2.Disconnect electrical lead.
3.Unscrew switch unit.
4.Remove switch and sealing washer.
Refit
5.Reverse removal procedure. Using a NEW
sealing washer.

86ELECTRICAL
40
REPAIR INSTRUMENT ILLUMINATION ELECTRONIC
DIMMER/RHEOSTAT
Service repair no - 86.65.07
Electronic dimming control switch is located in
instrument panel finisher. Rotate control to vary
intensity of illumination.
Remove
1.Disconnect the battery negative lead.
2.Remove instrument panel finisher.
See
CHASSIS AND BODY, Repair, Instrument
Panel Finisher
3.Remove 2 screws securing rheostat, remove
rheostat.
Refit
4.Reverse removal procedure.WINDOW LIFT/HEATED SEAT CUSHION
SWITCHES AND BULBS
Service repair no - 86.25.16 - Switches
Service repair no - 86.45.29 - Bulb
Switch Replacement
1.Disconnect the battery negative lead.
2.Carefully release rear of surround from centre
console.
3.Remove screws, pry window lift switch surround
from glove box.
4.Disconnect multi-plug(s) at rear of switch(es).
5.Apply pressure to rear of switch, push it through
surround.
Bulb replacement
6.Identify bulb to be replaced and remove
appropriate switch.
7.Rotate bulb holder 90°and withdraw it from
switch; discard bulb and holder.
Refit
8.Reverse removal procedure.

ELECTRICAL
41
REPAIR COOLANT TEMPERATURE TRANSMITTER - V8i
Service repair no - 26.10.02
Remove
1.Disconnect battery negative lead.
2.Disconnect lead from transmitter.
3.Remove transmitter, discard sealing washer if
fitted.
Refit
4.Coat threads of replacement transmitter with
Loctite 572.
5.Fit a new sealing washer to transmitter.
6.Fit transmitter, connect lead.
7.Top-up cooling system.HEATED FRONT SCREEN
Heated front screen will operate when switch is
operated, with engine running. Timer unit will provide
a preset time cycle of 7« minutes±20%.
To identify timer unit.
See Electrical Trouble
Shooting Manual.Electrical Troubleshooting
Manual
Switching OFF ignition, or further operation of heated
front screen switch during cycle will switch off screen
and cancel, reset and switch off timer unit.

86ELECTRICAL
42
REPAIR FOG LAMP - FRONT
Service repair no - 86.40.96
Remove
1.Locate and release lamp harness multiplug from
clip behind headlamp.
2.Disconnect multiplug.
3.Attach a draw string to harness.
4.Remove 2 nuts securing lamp bracket to bumper
studs.
5.Remove 2 screws securing lamp bracket to
spoiler.
6.Release lamp assembly and pull lamp harness
through front panel.
7.Detach draw string from harness.
8.Remove lamp/bracket assembly.
9.Remove 2 spire nuts from lamp bracket.
Refit
10.Reverse removal procedure.

ELECTRICAL
43
REPAIR ANTI-THEFT ALARM ECU (96 MODELS)
Service repair no - 86.55.85
Remove
1.Remove 4 studs securing fascia left hand
closing panel.
2.Remove closing panel.
3.Disconnect 2 multiplugs from ECU.
4.Remove nut securing ECU/relay bracket.
5.Lower bracket.
6.Remove 2 nuts securing ECU to bracket.
7.Remove ECU.
NOTE: A new ECU must be initialised
using TestBook.
Refit
8.Reverse removal procedure.HANDSET (96 MODELS)
If vehicle does not respond to handset immediately, it
may have lost synchronisation. To re-synchronise,
press either button, 4 times in quick succession. If
handset still fails to respond, check batteries, refer to
Owner's handbook. If batteries are okay, it may be
necessary to use emergency key access, refer to
Owner's handbook.
NOTE: New handsets must be initialised
using TestBook.
PASSIVE COIL (96 MODELS)
Service repair no - 86.77.35
Remove
1.Remove steering column shroud.
See
STEERING, Repair, Steering column shroud
2.Release multiplug from harness clip and
disconnect.
3.Release passive coil from starter switch.
4.Remove bulb holder/starter switch shroud.
5.Remove coil.
Refit
6.Fit coil, ensuring switch illumination bulb harness
passes through large cut-out.
7.Secure coil with cable tie.
8.Position bulb holder/starter switch shroud and
locate bulb.
9.Locate bulb holder/starter switch shroud,
ensuring cut-out in shroud aligns with lug on
starter switch.
10.Connect multiplug and secure to clip.
11.Fit column shroud.

86ELECTRICAL
44
REPAIR BONNET SWITCH
Service repair no - 86.55.89
Remove
1.Remove 2 bolts securing sounder, move
sounder aside.
2.Locate and disconnect bonnet switch multiplug.
3.Release and remove switch.
Refit
4.Reverse removal procedure.ULTRASONIC SENSOR
Service repair no - 86.77.32
Remove1.Release sensor from switch panel.
2.Disconnect multiplug and remove sensor.
Refit
3.Reverse removal procedure.
ANTI-THEFT ALARM INDICATOR LIGHT (96
MODELS)
Service repair no - 86.45.61
See Instrument illumination and warning light
bulbs
ENGINE IMMOBILISATION WARNING LIGHT (96
MODELS)
Service repair no - 86.45.61
See Instrument illumination and warning light
bulbs