Land Rover Defender V8i Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.20
DEFENDER V8i
Fuse 17 (C581-14) supplies a feed to the blower relay coil (C817-86) on a
green wire, and the compressor clutch relay coil (C1213-86), also on a green
wire. The blower relay coil (C817-85) is earthed on a black wire. The earth path
for the compressor clutch relay coil (C1213-85) is controlled by the ECM
(C634-1), which is connected to the relay by a blue/black then black/slate wire.
The now energised blower relay (C817-87) allows current to flow to the blower...

DESCRIPTION AND OPERATION
DEFENDER V8i4.21
Fuse 7 of the engine compartment fuse box (C574-1) supplies a feed to the
main relay coil within the engine management relay module (C154-6) on a
brown/light green wire. If the engine is running, the ECM (C635-17) provides an
earth path for the main relay (C157-3) on a blue/red wire. This energises the
main relay and allows a feed (C154-3) to flow to the condenser fan relay coil
(C1212-85) on a brown/orange then slate/blue wire.
The earth path for the condenser...

DESCRIPTION AND OPERATION
4.22
DEFENDER V8i
HEATER BLOWER
DESCRIPTION
The heater is operated by three sliding controls attached to the instrument
binnacle. Two of the controls regulate the temperature and air flow distribution.
The third control operates the two speed heater blower. The heater blower
operates with the ignition switch in position I, and is completely independent of
the air conditioning system.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse...

DESCRIPTION AND OPERATION
DEFENDER V8i4.23
HEATED REAR WINDOW (HRW)
DESCRIPTION
The heated rear window (HRW) is operated by a latching switch mounted on
the dash panel. When the switch is set to the On position, the instrument
panel warning lamp will illuminate to indicate the HRW is operating. The HRW
only operates when the ignition switch is turned to position II.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C1217-1) by a brown wire. Current passes...

DESCRIPTION AND OPERATION
4.24
DEFENDER V8i
WIPERS AND WASHERS
DESCRIPTION
The front windscreen wipers are controlled from the column switch and operate
when the ignition switch is in position II. The wipers have 2 speed settings,
along with a flick wipe and single wipe facility. An intermittent wipe function and
programmed wash wipe facility is controlled by the front wiper delay unit.
Moving the wiper switch down from the off position initiates the intermittent
wipe function. Moving the wiper switch up...

DESCRIPTION AND OPERATION
DEFENDER V8i4.25
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C1217-1) by a brown wire. Current passes though fusible link 5
(C570-2) which is connected to the ignition switch (C28-1) by a brown wire.
With the ignition switch in position II (C90-1), a feed is supplied to fuse 17 and
18 of the passenger compartment fuse box (C581-13) on a white wire. Fuse 17
(C581-14) supplies power to the rear wash/wipe circuit, while fuse...

DESCRIPTION AND OPERATION
4.26
DEFENDER V8i
Park Circuit
Positioning the wash/wipe switch to the off position cuts power to the wiper
motor on the blue/light green or red/light green wire. The park circuit operates
to return the wipers to their park position. The park switch (C30-4) is integral to
the wiper motor. It receives a feed from fuse 18 of the passenger compartment
fuse box (C581-16) on a green wire. The park switch is closed with the wipers
in any position other than their park position.
With...

DESCRIPTION AND OPERATION
DEFENDER V8i4.27
When the front wiper relay (C39-6) receives a feed from the wash/wipe switch
(C278-2), it outputs a feed (C39-2) back to the wash/wipe switch (C278-4) on a
yellow/light green wire. Power flows across the wash/wipe switch (C278-1) and
onto the wiper motor (C30-3), which operates at slow speed. When the washer
switch is released, the relay will operate the wipers for a further 3 cycles. Once
this has been completed, feed to the wash/wipe switch is cut by the relay...

DESCRIPTION AND OPERATION
4.28
DEFENDER V8i
EXTERIOR LAMPS - Brake and Reverse Lamps
DESCRIPTION
The brake lamps illuminate when the ignition switch is in position II and the
brake pedal is depressed. The reverse lamps illuminate when the ignition
switch is in position II and the gear selector lever is in the reverse position.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C1217-1) by a brown wire. Current passes through fusible link 5
(C570-2) and is...

DESCRIPTION AND OPERATION
DEFENDER V8i4.29
EXTERIOR LAMPS - Head, Side and Number Plate Lamps
DESCRIPTION
The lights are operated from the lighting switch located on the steering column.
The lighting switch has two positions. Position 1 switches on the tail lamps, the
number plate lamps, and the front side lamps. Position 2 additionally switches
on the front headlamps. When the headlamps are on, the column switch can be
used to switch between main beam and dipped beam.
The headlamps can be flashed with...