Land Rover Freelander 2003my Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.86FREELANDER 03MY
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
FREELANDER 03MY 4.87
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
4.88FREELANDER 03MY
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 03MY 4.89
PTC Relays
Operation of the PTC heater is controlled by two relays. PTC relay 1 is the control relay and 
is mounted on the side of the E-box. PTC relay 2 is the power relay and is mounted on the 
engine bulkhead, behind the engine compartment fuse box.
PTC Relay 1
The coil of PTC relay 1 (C0154) receives a feed from the PTCswitch (C0422) on a GW wire. 
The relay coil (C0154) is earthed on a B wire. When energised, PTC relay 1 (C0154) 
provides an earth path...

DESCRIPTION AND OPERATION
4.90FREELANDER 03MY
COOLING FANS
DESCRIPTION
K Series
K Series vehicles are fitted with a single cooling fan, which is mounted on the rear face of 
the radiator. Operation of the single speed cooling fan is controlled by the Engine Control 
Module (ECM) via the cooling fan relay.
NOTE: Vehicles fitted with Air Conditioning (A/C) are also fitted with a condenser fan and a 
cooling fan control unit. For more information, refer to the Air Conditioning (A/C) – K Series 
and KV6...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.91
E-box Fan
Fuse 4 of the engine compartment fuse box (C0575) provides a feed to the E-box 
temperature sensor (C1258) on an NK wire. The temperature sensor is a thermostatic 
switch. When the temperature within the E-box reaches 35 °C (95 °F) the switch contact 
close. Current flows across the switch contacts (C1258) to the E-box fan (C0646) on an NK 
wire. The E-box fan (C0646) is earthed on a B wire.
When the temperature within the E-box drops to 27 °C (80...

DESCRIPTION AND OPERATION
4.92FREELANDER 03MY
E-box Fan
Fuse 4 of the engine compartment fuse box (C0575) provides a feed to the E-box 
temperature sensor (C1258) on an NK wire. The temperature sensor is a thermostatic 
switch. When the temperature within the E-box reaches 35 °C (95 °F) the switch contact 
close. Current flows across the switch contacts (C1258) to the E-box fan (C0646) on an NK 
wire. The E-box fan (C0646) is earthed on a B wire.
When the temperature within the E-box drops to 27 °C (80...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.93
HEATED REAR WINDOW (HRW)
DESCRIPTION
General
The HRW comprises eleven metallic strips bonded to the inside surface of the tail door glass 
to form an element. The metallic strips terminate in two larger strips at the bottom of the 
glass. Two connectors bonded to the terminations provide attachment of the supply and 
earth connections.
The HRW is controlled by the Central Control Unit (CCU) via a non latching switch mounted 
on the centre console. The switch...

DESCRIPTION AND OPERATION
4.94FREELANDER 03MY
Fusible link 3 (C0571) is connected to the ignition switch (C0028) by an N wire. When the 
ignition switch is turned to the ignition position, current flows across the switch (C0028) to 
fuse 8 of the passenger compartment fuse box (C0588) on a G wire. Fuse 8 provides an 
ignition feed to the CCU (C0593). 
When the CCU receives an ignition feed, it provides a feed to the HRW switch (C0072) on 
a GY wire. When the switch is pressed, current flows across the...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.95
Roof On Switch (3 Door Vehicles Only)
Fuse 14 of the passenger compartment fuse box (C0583) provides a constant battery feed 
to the roof on switch (C0497) on a P wire. The roof on switch is closed when the hard back 
is fitted, or the soft back is in the fitted position. In this instance, current flows across the 
switch (C0497) to the CCU (C0428) on a PY wire. If the hard back is removed (or the soft 
back is folded down) the roof on switch becomes open...