Land Rover Defender 2002 Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.28DEFENDER 02MY
AIR CONDITIONING – Td5
Description
General
The air conditioning (A/C) system fitted to Defender operates independently of the standard 
heating and ventilation system. The A/C system is controlled by two rotary switches located 
on the driver side of the fascia; one switch controls blower speed, the other controls output 
temperature.
In order to gain maximum A/C system performance, the standard heater blower control 
should be set to 0, and both the...

DESCRIPTION AND OPERATION
DEFENDER 02MY 4.29
Fuse 15 (C0580) provides an ignition feed to the following on WG wires:

The blower motor relay (C0153)

The air conditioning unit (C1273)

The blower motor switch (C1508)

The air conditioning temperature control switch (C0275).
Fuse 12 (C0580) provides an ignition feed to the Engine Control Module (ECM) (C0658) on 
a WG wire.
Blower Motor
The blower motor relay coil (C0153) receives an ignition feed from fuse 15 of the passenger 
compartment fuse box (C0580)...

DESCRIPTION AND OPERATION
4.30DEFENDER 02MY
Temperature Control
The temperature control switch relays operator input to the air conditioning unit, to control 
A/C system temperature output. The switch (C0275) receives an ignition feed from fuse 15 
of the passenger compartment fuse box (C0580) on a WG wire. 
When the switch is turned to position 1, a feed is provided to the air conditioning unit (C1273) 
on a UY wire. When the switch is turned to position 2, a feed is provided to the air 
conditioning...

DESCRIPTION AND OPERATION
DEFENDER 02MY 4.31
HEATER
Description
General
The heater operates when the ignition switch is turned to position I or II. The blower motor 
is controlled via a three position rotary switch, which is located on the driver side of the 
fascia. Two slider controls are also located on the fascia centre module, controlling heater 
temperature and direction.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 5 of the under seat...

DESCRIPTION AND OPERATION
4.32DEFENDER 02MY
HEATED REAR WINDOW
Description
General
The Heated Rear Window (HRW) is operated via a latching switch mounted in the fascia 
console. When the switch is pressed, a warning lamp located in the instrument pack and a 
switch mounted tell-tale LED both illuminate to indicate the HRW is operating. The HRW 
only operates when the ignition switch is turned to the ignition position.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is...

DESCRIPTION AND OPERATION
DEFENDER 02MY 4.33
HEATED FRONT SCREEN
Description
General
The Heated Front Screen (HFS) comprises two separate elements, one RH and one LH. 
When the switch is pressed, both elements operate simultaneously. A tell-tale LED is 
located in the switch to inform the driver when the HFS is operational. 
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 1 and fusible link 
5 of the under seat fuse box (C0632) on an N wire....

DESCRIPTION AND OPERATION
4.34DEFENDER 02MY
WIPERS AND WASHERS
Description
General
The front wipers are controlled via the wash/wipe switch mounted on the steering column. 
The front wipers have two speed settings, a flick wipe facility, and an intermittent wipe 
function, which is controlled by a wiper delay ECU. The wiper delay ECU also controls the 
programmed wash wipe function, which is activated by pressing the end of the wash/wipe 
switch.
The rear screen wiper is controlled via a latching switch...

DESCRIPTION AND OPERATION
DEFENDER 02MY 4.35
Fast Wipe
When the wash/wipe switch is moved to the fast wipe position, current flows across the 
switch (C1740 on LHD, C0278 on RHD) to the wiper motor (C1593 on LHD, C0030 on RHD) 
on a RLG wire. Current flows across the motor (C1593 on LHD, C0030 on RHD) to earth on 
a B wire. Current by-passes the in-line resistor located within the wiper motor, enabling the 
motor to operate at fast speed.
Intermittent Wipe
When the wash/wipe switch is moved to the...

DESCRIPTION AND OPERATION
4.36DEFENDER 02MY
Programmed Wash Wipe
Pressing the end of the wash/wipe switch initiates the programmed wash/wipe function. 
When the switch is pressed, current flows across the switch (C1740 on LHD, C0278 on 
RHD) to the windscreen washer pump (C0008) on an LGB wire. The pump (C0008) is 
earthed on a B wire. 
When the switch is pressed, the wash/wipe switch (C1740 on LHD, C0278 on RHD) also 
provides a feed to the wiper delay ECU (C0303) on an LGB wire. The wiper delay ECU...

DESCRIPTION AND OPERATION
DEFENDER 02MY 4.37
BRAKE AND REVERSE LAMPS
Description
General
The brake lamps illuminate when the ignition switch is turned to position II, and the brake 
pedal is pressed. The reverse lamps illuminate when the ignition switch is in position II, and 
the gear selector lever is in the reverse gear position.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 5 of the under seat 
fuse box (C0632) on an N wire. Fusible link 5...