Land Rover Freelander 2003my Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.76FREELANDER 03MY
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
FREELANDER 03MY 4.77
AIR CONDITIONING (A/C) – K SERIES AND KV6
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
4.78FREELANDER 03MY
Fusible link 1 is connected in series with fuse 8, fuse 9 and fusible link 2, which are also 
located in the engine compartment fuse box. Fuse 8 (C0576) provides a constant battery 
feed to the blower relay (C0153) on a GN then GW wire. Fuse 9 provides a constant battery 
feed to the compressor clutch relay, which is also located in the engine compartment fuse 
box.
Fusible link 2 (C0571) is connected to the ignition switch (C0028) by an NR wire. When the...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.79
KV6
When the ECM (C0371) receives an A/C request signal via the CAN BUS, it will energise 
the compressor clutch relay by providing an earth path for the relay coil (C0578) on a BR 
wire. A feed from fuse 9 of the engine compartment fuse box is now able to flow across the 
energised relay (C0575) to the compressor clutch (C0127) on an R wire.
Instrument Pack
The instrument pack (C0230) acts as a gateway, relaying CAN messages to and from 
different...

DESCRIPTION AND OPERATION
4.80FREELANDER 03MY
Cooling Fan Control Unit
Fusible link 5 of the engine compartment fuse box (C0573) provides a constant battery feed 
to the cooling fan control unit (C0208) on an NG wire. Fuse 4 of the engine compartment 
fuse box (C0575) provides a feed to the cooling fan control unit (C1680) on an NK wire when 
the main relay in energised. The cooling fan control unit (C0208) is earthed on a B wire.
To control cooling fan and condenser fan speed, the ECM (C0913 on K Series...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.81
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
4.82FREELANDER 03MY
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 (C0586) 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 Switch...

DESCRIPTION AND OPERATION
FREELANDER 03MY 4.83
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...

DESCRIPTION AND OPERATION
4.84FREELANDER 03MY
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
FREELANDER 03MY 4.85
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...