coolant temperature LAND ROVER DISCOVERY 1995 Repair Manual

AIR CONDITIONING
5
DESCRIPTION AND OPERATION Condenser cooling fans
The condenser cooling fans operate automatically
whenever the air conditioning system is switched on.
Fan timer unit
The thermostatically controlled timer will continue to
operate the cooling fans after the air conditioning or
ignition is switched off. When the system temperature
is excessive, the fans will operate for 10 minutes to
reduce condenser and underbonnet temperature.
Blower control
The blower can be operated at any one of four speeds
by sliding the blower switch to the required position.
When the blower is switched off the air conditioning
system will not operate.
The fresh air/recirculation flaps can move between
two positions. One position covers the outside air
inlet, leaving open an inlet from the inside of the
vehicle clear, when recirculated air is required. In the
other position they will cover the inlet from the inside
of the vehicle leaving open the outside air inlet when
fresh air is required.Heater distribution and blend unit control
Blower unit air flow, having passed through the
evaporator passes into the heater blend unit to be
heated, if required. It is then directed into the vehicle
interior in accordance with the flap positions
designated by the air distribution control. Heater flaps
control the amount of air flowing through the heater
matrix. These flaps are controlled individually by the
driver's and passenger's temperature controls.
When the temperature control is in the cold position, a
micro switch actuates a vacuum control to close the
coolant valve on the engine. As the temperature
control is moved away from cold, the coolant valve is
opened allowing heated engine coolant to flow
throught the heater matrix. The temperature of the
heated air flow into the vehicle interior is controlled by
the blend flaps.
The distribution control moves the flaps which control
the direction of the air flow into the interior of the
vehicle.

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.

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.