tow LAND ROVER DISCOVERY 1995 Service Manual

80HEATING AND VENTILATION
4
DESCRIPTION AND OPERATION Air direction flap
Flap moves across mixing chamber to direct the air
flow away from the heater matrix.
Air temperature flap
Control at HOT, flaps fully closed. All air flow passes
through heater matrix. As control is moved towards
COLD the flaps progressively open directing air flow
away from the heater matrix.
Control at COLD, flaps fully open.
V8 Engine:When both controls are at COLD, 2
micro-switches are closed and operate a vacuum
valve which closes the coolant valve.Air conditioning
When an air conditioning unit is fitted, the mechanical
operation of the heater controls remains unaltered.
However the air conditioning evaporator is positioned
in front of the mixing chamber through which all air
flow passes.

84WIPERS AND WASHERS
2
DESCRIPTION AND OPERATION Wash wipe function
With the ignition switched on, power is supplied via a
fuse to the multi-switch, a control unit and a park
switch which is driven by the wiper motor.
Single wipe A
Pull the lever down and release immediately.
NOTE: With the lever held down, the
wipers will continue operating at high
speed until it is released.
Intermittent wipe B
Turn switch to second position.
Normal speed wipe C
Turn switch to second position.
Fast speed wide D
Turn switch to third position.
Variable delay (intermittent wipe)
Rotate the switch to vary the delay between wipes.
Windscreen washer E
Pull the lever towards the steering wheel. The
windscreen washers will operate in conjunction with
the wipers for as long as the lever is held in this
position.
Headlamp washers
The headlamp washers operate automatically
whenever the windscreen washers are operated,
provided the headlamps are illuminated and switched
to dipped beam. For continuous washing, hold the
windscreen washer control in the washposition E.
REAR WINDOW WIPER AND WASHER
OPERATION
The illustration J5375 also locates and identifies the
main components of the rear window wiper and
washer system which is operated by two switches
mounted on the right hand side of the instrument
binnacle.
Rear window wipe A
Press the switch to operate: after continuously wiping
3 or 4 times, the wiper operates intermittently (approx
once every 6 seconds) until switched off.
Rear window washer B
Press and hold the switch for the required duration of
rear screen washing. The wiper operates
automatically during washing and continues for a
further 3 wipes after the switch is released.

86ELECTRICAL
4
FAULT DIAGNOSIS TEST 4:
Pick-up Coil Resistance
Remove amplifier.
Connect ohmmeter leads to two pick-up terminals in
body of distributor.
The ohmmeter should register between 2k and 5k
ohm if pick-up is satisfactory. If ohmmeter reading is
correct, check all connections between pick-up and
amplifier, if satisfactory, fit new amplifier. If engine still
does not start carry out Test 5.
Change pick-up if ohmmeter reading is incorrect. If
engine still does not start proceed to Test 5.TEST 5:
Coil H.T. Sparking
Remove existing coil/distributor H.T. lead and fit test
H.T. lead to coil tower. Using suitable insulated pliers,
hold free end about 6mm from engine block and crank
engine. There should be good H.T. sparking.
If weak or no sparking, fit new coil, repeat test.
H.T. sparking good, repeat test with original H.T. lead.
If sparking is good carry out Test 6.
If weak or no sparking, fit new H.T. lead, if engine will
not start carry out Test 6.

86ELECTRICAL
26
REPAIR TRAILER SOCKET
Remove
1.If fitted remove the RH side facing seat
See
CHASSIS AND BODY, Repair, Rear Fold
Down Seats
2.Remove the rear lower side trim panelSee
CHASSIS AND BODY, Repair, Rear
Compartment Lower Trim Panels
3.Raise the carpet adjacent to the RH rear quarter
panel.
4.Disconnect the trailer socket lead multi-plug from
the RH body harness.
5.Displace the rubber grommet in the floor and
pass the socket lead through to the underside of
the vehicle.
6.Remove the securing screws and withdraw the
trailer socket from the towing hook mounting
bracket.
Refit
7.Reverse removal procedure.

ELECTRICAL
47
REPAIR
10.From above, remove top bolt securing starter
motor and position earth lead aside.
NOTE: To assist removal, use 230 mm
extension bar positioned between engine
mounting bracket and exhaust manifold.
11.Remove bottom bolt securing starter motor.
12.Remove starter motor.Refit
13.Ensure mating faces are clean.
14.Locate starter motor in fitted position and fit
bottom bolt finger tight.
15.Fit top bolt. Tighten to
42 Nm.
16.Bottom bolt. Tighten to42 Nm.
17.Connect feed wires to solenoid terminal. Secure
with nut.
18.Connect Lucar to starter solenoid.
19.Manoeuvre heat shield down and forward to
position bracket against engine mounting.
Engage clip on solenoid.
20.Align bracket to hole using suitable tool and fit
retaining bolt.
21.Clean flange mating surfaces, locate propeller
shaft and align reference marks.
22.Fit bolts and NEW nyloc nuts. Tighten to
48 Nm.
NOTE: Fit bolts with head towards transfer
box and away from differential.
23.Lower vehicle.
24.Reconnect battery negative lead.