Land Rover Freelander 2002my Electrical Library 3rd Edition Rover Manual

							DESCRIPTION AND OPERATION
4.100FREELANDER 02MY
OPERATION
Td4
Feed from the positive battery terminal (C0192) is supplied to fusible link 1 and the main 
relay (C0632) on an R wire. Both are located in the engine compartment fuse box. Operation 
of the main relay (C0576) is controlled by the Engine Control Module (ECM) (C0603) on a 
WK wire. The energised main relay provides a feed to fuse 4, which is also located in the 
engine compartment fuse box.
Fusible link 1 is connected in series with fusible link 7. Fusible link 7 provides a constant 
battery feed to the starter relay, which is also located in the engine compartment fuse box. 
Operation of the starter relay (C0576) is controlled by the ECM (C0059) on an RW wire. The 
relay coil (C0576) is earthed on a B wire. The energised starter relay (C0572) provides a 
feed to the E-box fan (C0646) on an NR wire.
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 °F), the switch contacts within the 
sensor open, cutting the feed to the E-box fan.
K Series
Feed from the positive battery terminal (C0192) is supplied to fusible link 5, and the main 
relay on an R wire. Both are located in the engine compartment fuse box. Fusible link 5 
(C0573) provides a constant battery feed to the cooling fan relay (C0019) on an SU wire.
Operation of the main relay (C0576) is controlled by the ECM (C0913) on a WK wire. When 
energised, the main relay provides a feed to fuse 4, which is also located in the engine 
compartment fuse box. Fuse 4 (C0575) is connected to the cooling fan relay (C0019) by an 
NK wire.
Engine Coolant Temperature (ECT) Sensor
The ECM monitors Engine Coolant Temperature (ECT) via the ECT sensor. The ECM 
(C0914) provides a feed to the ECT sensor (C0169) on a KG wire. As ECT rises, the 
resistance of the sensor falls. By measuring the voltage returned from the ECT sensor 
(C0169) on a KB wire, the ECM (C0914) can determine ECT.
Cooling Fan
When the ECM (C0913) registers a temperature of 102 °C (215 °F) via the ECT sensor, it 
energises the cooling fan relay by providing an earth path for the relay coil (C0019) on a UR 
wire. The energised cooling fan relay (C0019) provides a feed to the cooling fan motor 
(C0005) on an NR wire. The cooling fan motor (C0005) is earthed on a B wire. 
						

							DESCRIPTION AND OPERATION
FREELANDER 02MY 4.101
KV6
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 and the main 
relay (C0632) on an R wire. Both are located in the engine compartment fuse box. Operation 
of the main relay (C0578) is controlled by the ECM (C0371) on a WK wire. The energised 
main relay provides a feed to fuse 4, which is also located in the engine compartment fuse 
box.
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 
the E-box fan (C0646) on a WR wire. 
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 °F), the switch contacts within the 
sensor open, cutting the feed to the E-box fan. 
						

							DESCRIPTION AND OPERATION
4.102FREELANDER 02MY
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 has an illumination LED to show when the HRW is 
operational. The switch is also illuminated by a separate bulb when the side or headlamps 
are switched on. For more information on switch illumination, refer to the  Interior 
Illumination  section of this manual.
 
+  INTERIOR ILLUMINATION. 
The CCU will only operate the HRW when all of the following conditions are met:

The HRW switch is pressed.

The engine is running.

The tail door window is closed.

The roof is fitted (3 door models only).
NOTE: The HRW will not operate if the tail door window has not been calibrated. For more 
information on tail door window calibration, refer to the Windows section of this manual.
 
+  WINDOWS. 
The CCU will switch the HRW off automatically after approximately 15 minutes. 
						

							DESCRIPTION AND OPERATION
FREELANDER 02MY 4.103
OPERATION
General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 and fusible link 
4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) provides 
a constant battery feed to the HRW relay and fuse 14 of the passenger compartment fuse 
box (C0587) on an NW wire. 
NOTE: Only 3 door vehicles utilise fuse 14 for HRW operation.
The earth path for the HRW coil is controlled by the CCU (C0592), which is connected 
directly into the rear of the passenger compartment fuse box. The CCU will only provide an 
earth path for the relay coil if the ignition is switched on, and the engine is running.
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 switch contacts (C0072) to 
earth on a B wire. The first of two electrical switches within the CCU will now close.
When the ignition is switched on, the CCU (C0592) also provides a feed to the oil pressure 
switch (C0187) via the passenger compartment fuse box (C0581) on an NW then WN wire. 
The oil pressure switch contacts are closed when there is no oil pressure. When the engine 
is started, the rise in oil pressure causes the switch contacts to open. When the switch 
contacts open, the second electrical switch within the CCU closes.
When both electrical switches within the CCU are closed, the CCU (C0592) provides an 
earth path for the HRW relay coil via the passenger compartment fuse box (C0587) on a B 
wire. The energised HRW relay provides a feed to fuse 23, which is also located in the 
passenger compartment fuse box. Fuse 23 (C0583) provides a feed to the HRW element 
(C0381) on an N wire. The HRW element (C0382) is earthed on a B wire. Fuse 23 (C0580) 
also provides a feed to the switch illumination LED (C0072) on an NG wire. The LED 
(C0072) is earthed on a B wire.
The CCU will de-energise the HRW relay by removing its earth path after approximately 15 
minutes has elapsed, or if the ignition is switched off. 
						

							DESCRIPTION AND OPERATION
4.104FREELANDER 02MY
Tail Door Window Lift
The HRW will not operate if the tail door glass is not in the fully closed position. If the tail 
door window is opened while the HRW is operational, the CCU suspends the feed to the 
HRW element by de-energising the HRW relay. The CCU (C0428) monitors the condition of 
the tail door window via the tail door window switch (C0354) on BR and BK wires. The switch 
(C0354) is earthed on a B wire.
For more information on tail door window operation, refer to the  Windows  section of this 
manual.
 
+  WINDOWS. 
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 circuit, and the feed to the CCU is 
removed. The CCU will now inhibit operation of the HRW. 
						

							DESCRIPTION AND OPERATION
FREELANDER 02MY 4.105
HEATED FRONT SCREEN (HFS)
DESCRIPTION
General
The Heated Front Screen (HFS) is an optional fit introduced at 2002 MY, and consists of two 
heater elements which are embedded into the LH and RH sides of the windscreen. Two 
connectors at the base of the windscreen provide the power feed and an integral earth for 
each of the heater elements.
Operation of the HFS is controlled by the CCU and a non latching switch on the centre 
console. The switch contains an LED which illuminates while the HFS is on. The CCU de-
energises the HFS relay after approximately 5 minutes, when the switch is pressed again or 
if the engine stops.
OPERATION
General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine 
compartment fuse box (C0632) on an R wire and the Heated Front Screen (HFS) relay 
(C0994) on an N wire.
Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on 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), which is mounted on the rear of the 
passenger compartment fuse box. The CCU (C0593) is earthed via the passenger 
compartment fuse box (C0587) on a B wire.
HFS Relay
The battery (C0192) provides a constant battery feed to the HFS relay coil (C0994) on an N 
wire. The earth path for the relay coil (C0994) is controlled by the CCU (C0429) on an SB 
wire.
The CCU will only provide an earth path for the HFS relay coil if all of the following are 
present:

The ignition is on.

The engine is running.

The HFS switch is pressed.
The CCU (C0592) monitors the condition of the oil pressure switch (C0187) on a WN wire. 
The oil pressure switch contacts are closed when there is no oil pressure. When the engine 
is started, the rise in oil pressure causes the switch contacts to open. 
						

							DESCRIPTION AND OPERATION
4.106FREELANDER 02MY
HFS Switch
The CCU (C0429) monitors the condition of the HFS switch (C0131) by providing a feed on 
a KO wire. When the switch is pressed the CCU senses the momentary earth path, and 
(providing all other conditions are met) energises the HFS relay. The switch (C0131) is 
earthed on a B wire.
HFS Elements
The energised HFS relay (C0994) provides a feed to fuse A and fuse B (C1860) on a pair of 
NW wires. Fuse A (C1860) provides a feed to the LH screen element (C0247) on a PS wire. 
Fuse B (C1860) provides a feed to the RH screen element (C0246) on a PK wire.
The energised HFS relay (C0994) also provides a feed to fuse C (C1860) on an NW wire. 
Fuse C (C1860) provides a feed to the HFS switch tell-tale LED (C0131) on a PK wire. The 
LED (C0131) is earthed on a B wire. 
						

							DESCRIPTION AND OPERATION
FREELANDER 02MY 4.107
WIPERS AND WASHERS
DESCRIPTION
Front
Wipers
Operation of the windscreen wipers is controlled by the Central Control Unit (CCU). There 
are four modes of wiper operation. These are selectable from the RH column stalk when the 
ignition switch is in the ignition position.
NOTE: Windscreen wiper operation is temporarily suspended while the engine in cranking.
The modes of windscreen wiper operation are:

Slow wipe.

Fast wipe.

Intermittent wipe.

Flick wipe.
Washers
The windscreen washer jets are controlled by the CCU and are operated by pulling the RH 
column stalk back against spring pressure. When the washer jets are operated, the 
windscreen wipers will start operating at slow speed after a delay of approximately 0.6 
seconds. The wipers will continue to operate at slow speed until approximately 2 seconds 
after the RH wiper stalk is released.
Rear
Wiper
The rear wiper is switched on and off by pressing the switch mounted on the RH side of the 
instrument pack. The rear wiper is controlled by the Central Control Unit (CCU) and will only 
operate when the ignition switch is in the ignition position.
NOTE: Rear wiper operation will NOT be suspended while the engine is cranking.
The rear wiper will stop operating and return to its park position if any of the following occur:

The tail door is opened.

The tail door window is opened.

The roof is removed (3 door vehicles only).
If the windscreen wipers are in operation and reverse gear is selected, the rear wiper will 
automatically operate at slow speed, irrespective of rear wiper switch position. The rear 
wiper will stop operating when reverse gear is de-selected. 
						

							DESCRIPTION AND OPERATION
4.108FREELANDER 02MY
Washer
The rear washer is operated by pressing the non-latching switch mounted on the RH side of 
the instrument pack. The washer will operate until the switch is released.
The rear wiper will start operating at slow speed as soon as the washer switch is depressed, 
and will continue to operate at slow speed for approximately 6 seconds after the switch is 
released.
OPERATION
Front
General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine 
compartment fuse box (C0632) on an R wire. 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 (C0588) on a G wire, and fuse 3 
(C0588) on an NW wire. Both are located in the passenger compartment fuse box. 
Fuse 8 and fuse 3 (C0593) both provide an ignition feed to the front wiper relay contained 
within the Central Control Unit (CCU). The CCU (C0593) is earthed via the passenger 
compartment fuse box (C0587) on a B wire.
Intermittent Wipe
Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
wiper switch (C0035) on an LG wire, and the variable wipe potentiometer (C0320) on a GY 
wire. When the wiper switch is moved to the intermittent wipe position, current flows across 
the switch (C0035) to the CCU (C0428) on a G wire.
The variable wipe potentiometer has 5 pre-set positions. The potentiometer (C0320) is 
connected to the CCU (C0429) by a WK wire. The voltage supplied to the CCU by the 
potentiometer is dependent upon its position. The CCU is able to determine the amount of 
delay to apply to the wipers by measuring the voltage provided on the WK wire.
When the CCU receives a feed from the intermittent wipe switch and the potentiometer, it 
provides an intermittent feed back to the wiper switch (C0035) on a LGK wire. The wiper 
switch (C0035) is connected to the wiper motor (C0030) by a ULG wire. Current flows across 
the motor slow speed windings and is earthed (C0030) on a B wire.
Slow Wipe
Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
wiper switch (C0035) on a G wire. When the wiper switch is moved to the slow wipe position, 
current flows across the switch (C0035) to the wiper motor (C0040) on a ULG wire. Current 
flows across the motor slow speed windings and is earthed (C0030) on a B wire.  
						

							DESCRIPTION AND OPERATION
FREELANDER 02MY 4.109
Fast Wipe
Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
wiper switch (C0035) on a G wire. When the wiper switch is moved to the fast wipe position, 
current flows across the switch (C0035) to the wiper motor (C0030) on a RG wire. Current 
flows across the motor fast speed windings and is earthed (C0030) on a B wire. 
Park
Fuse 3 of the passenger compartment fuse box (C0582) provides an ignition feed to the 
wiper motor park switch (C0030) on an LG wire. The park switch is closed with the wipers in 
any position other then the park position.
When the wipers are turned off, current flows across the park switch (C0030) to the CCU 
(C0430) on an NLG wire. The CCU (C0430) is connected to the wiper switch (C0035) by an 
LGK wire. The wiper switch (C0035) provides a feed to the wiper motor (C0040) on a ULG 
wire. Current flows across the motor slow speed windings and is earthed (C0030) on a B 
wire. When the wipers reach the park position, the switch contacts open and power to the 
wiper motor is cut.
Washers
Fuse 3 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
washer switch (C0035) on an LG wire. When the RH column stalk is pulled back against 
spring pressure, current flows across the switch (C0035) to the washer pump (C0008) on a 
LGB wire. The washer pump (C0008) is earthed on a B wire.
The washer switch (C0035) also provides a feed to the CCU (C0428) on an LGB wire. When 
the CCU receives this feed, it initiates its programmed wash/wipe function.
Rear
General
Feed from the positive battery terminal (C0192) is provided to fusible link 3, and fusible link 
4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) is 
connected to fuse 30 and fuse 14 of the passenger compartment fuse box (C0587) by an 
NW wire. Fuse 30 (C0583) provides a constant battery feed to the rear wiper relay (C0124) 
on a PR wire. Fuse 14 (C0583) provides a constant battery feed to the Roof On switch 
(C0497) on a P wire.
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 1 of the passenger compartment fuse box (C0588) on an NW wire. The ignition switch 
(C0028) also provides a feed to fuse 8 of the passenger compartment fuse box (C0588) on 
a G wire.