Land Rover Freelander 2004my Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.82FREELANDER 04MY
AIR CONDITIONING (A/C) – KV6 (NORTH AMERICA)
DESCRIPTION
General
The air conditioning (A/C) system will only operate when the engine is running. The A/C 
system is switched on and off by pressing the switch mounted on the centre console. When 
the switch is pressed, an LED mounted within the switch illuminates to inform the driver the 
system is operational. For more information on LED operation, refer to the  Interior 
Illumination  section of this manual....

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.83
Fusible link 2 (C0571) is connected to the ignition switch (C0028) by an NR wire. When the 
ignition switch is turned to the ignition position, current flows across the switch to fuse 4 of 
the passenger compartment fuse box (C0588) on an SU wire. Fuse 4 (C0585) provides an 
ignition feed to following on G then LGS wires:
zThe blower motor switch (C0058).
zThe fresh/recirculated air switch (C0750).
zThe fresh/recirculated air motor (C0006).
A/C Master...

DESCRIPTION AND OPERATION
4.84FREELANDER 04MY
Pressure Sensor
The pressure sensor is located in the high pressure A/C line adjacent the compressor, and 
replaces the more traditional trinary pressure switch. The instrument pack (C0230) provides 
a 5 V reference voltage to the pressure sensor (C1257) on a UO wire. The pressure sensor 
(C1257) is provided an earth path via the instrument pack (C0230) on a PB wire.
The pressure sensor (C1257) provides the instrument pack (C0230) a signal feed on a UG 
wire....

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.85
The cooling fan control unit interprets the PWM signal provided by the ECM as follows:
zIf a PWM signal of between approximately 12 % and 87 % is received by the cooling 
fan control unit, it will not power the cooling fans.
zIf a PWM signal of 87 % or over is received by the cooling fan control unit, it will provide 
a feed to the cooling fan (C0005) and condenser fan motors (C0280) on SU wires. An 
earth path is provided for the cooling fan (C0005) and...

DESCRIPTION AND OPERATION
4.86FREELANDER 04MY
HEATER BLOWER
DESCRIPTION
General
The heater is operated from three rotary controls located in the centre console. Two of the 
controls operate the temperature and air flow distribution. The third control operates the four 
speed blower motor.
A resistor pack is mounted on the RH side of the heater unit. The resistor pack supplies 
reduced voltages to the blower motor for fan speed one, two, and three. Fan speed four 
drives the blower motor at full speed...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.87
Blower Speed 3
If blower speed 3 is selected, current flows across the blower motor switch (C0058) to the 
resistor pack (C0425) on an RG wire. The resistor pack (C0425) is connected to the blower 
motor (C0056) by a GK then G wire. As current has to flow through the smallest value 
resistor, the blower motor operates at an increased speed.
Blower Speed 4
If blower speed 4 is selected, current flows across the blower motor switch (C0058) to the 
blower motor...

DESCRIPTION AND OPERATION
4.88FREELANDER 04MY
FUEL BURNING HEATER (FBH)
DESCRIPTION
General
A Fuel Burning Heater (FBH) is used to compensate for the lower operating temperatures 
of diesel engines by heating engine coolant before it enters the heater matrix. For a detailed 
description of FBH operation, refer to the   Heating and Ventilation   section of the System 
Description and Operation Workshop manual.
OPERATION
General
Feed from the positive battery terminal (C0192) is supplied to fusible link 1...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.89
AIR BLAST TRANSMISSION COOLER
DESCRIPTION
General
The air blast transmission cooler is located in the front LH wheel arch in place of the Fuel 
Burning Heater (FBH). The air blast cooler is only fitted to Td4 vehicles with automatic 
transmission in hot climate markets. For a detailed description of the air blast transmission 
cooler, refer to the  Automatic Gearbox – Jatco  section of the System Description and 
Operation workshop manual.
OPERATION
General...

DESCRIPTION AND OPERATION
4.90FREELANDER 04MY
POSITIVE TEMPERATURE COEFFICIENT (PTC) HEATER
DESCRIPTION
General
The Positive Temperature Coefficient (PTC) heater replaces the Fuel Burning Heater (FBH) 
fitted to Td4 vehicles in markets of a moderate climate. The PTC heater, like the FBH, is an 
auxiliary heating system that compensates for the relatively low coolant temperature 
inherent in the diesel engine.
The PTC heater is an electrical heating element installed in the heater assembly on the...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.91
PTC Switch
If the rotary blower motor switch is turned to position 1 or higher, current from fuse 4 of the 
passenger compartment fuse box (C0585) flows across the switch (C0058) to the PTC 
switch (C0422) on an SW wire. The PTC switch is mounted on the rear of the rotary 
temperature control switch. When the temperature control switch is in the cold to warm 
position (i.e. less than approximately 1 oclock), the PTC switch contacts are open. If the...