Land Rover Defender 300 Tdi Electrical Library Rover Manual

							DESCRIPTION AND OPERATION
DEFENDER 97 MY4.21
Full Beam
When the column switch is moved to the main beam position (C036-5), current
is supplied to fuse 13 (C580-25) and fuse 14 (C580-27) of the passenger
compartment fuse box. Both are connected by blue/white wires. A feed is also
supplied to the main beam warning lamp (C233-5) on a blue/white wire.
Fuse 13 (C580-26) supplies a feed to the RH headlamp (C011-1) on a
blue/orange wire. The headlamp is earthed (C011-3) on a black wire.
Similarily, fuse 14 (C580-28) supplies a feed to the LH headlamp (C009-1) on a
blue/slate wire. The headlamp is earthed (C009-3) on a black wire.
Headlamp Flash
Fusible link 2 (C907-2) of the engine compartment fuse box supplies a constant
battery feed to fuse 2 (C580-3) of the passenger compartment fuse box. Fuse 2
(C580-4) is connected to the column switch (C036-7) by a purple wire.
When the column switch is pulled back to the flash position, current flows
across the switch (C036-5) and provides a feed to fuse 13 (C580-25), fuse 14
(C580-27) and the instrument pack warning lamp (C233-5) on blue/white wires.
All 3 are earthed on black wires as described in the Full Beam description. 
						

							DESCRIPTION AND OPERATION
4.22
DEFENDER 97 MY
EXTERIOR LAMPS - Rear Fog Lamps
DESCRIPTION
The rear fog lamps only operate when the headlamps are illuminated and the
ignition switch is in position II. The non- latching switch is positioned in the
centre of the dash panel. When the rear fog lamps are switched on, the
instrument pack warning lamp also illuminates. The fog lamps are automatically
switched off every time the ignition is turned off.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C632-1) by a brown wire. Current flows through fusible link 1 and
fusible link 2 of the engine compartment fuse box, which are connected in
parallel.
Fusible link 1 of the engine compartment fuse box (C907-1) is connected to the
lighting switch (C041-1) by a brown wire. With the lighting switch in either the
side or main lamp position, current flows across the switch (C041-4) to the
headlamp relay (C282-87) on a blue wire. As the relay is not energized, the
relay switch is open, preventing current flow.
Fusible link 2 of the engine compartment fuse box (C907-2) is connected to the
ignition switch (C026-1) by a brown wire. With the ignition switch in position II
(C094-1), current flows to the headlamp relay coil (C282-85) on a white wire.
The relay coil is earthed (C282-86) on a black wire.
With the relay coil energized, the relay switch closes, allowing current to flow
from the headlamp relay (C282-30) to fuse 6 of the passenger compartment
fuse box (C580-11). Fuse 6 of the passenger compartment fuse box (C580-12)
is connected to the rear fog guard lamp ECU (C543-2) by a blue/purple wire.
The rear fog guard lamp ECU (C543-4) is connected to the rear fog guard lamp
switch (C064-2) by a red/slate wire. When the switch is depressed
momentarily, it provides an earth (C064-3) on a black wire. The fog guard lamp
ECUis also earthed (C543-1) directly on a black wire. When the ECU senses
the second earth via the switch, it provides a feed (C543-3) to the instrument
pack warning lamp (C233-4), the RH rear fog guard lamp (C512-1), and the LH
rear fog guard lamp (C515-1). All three are connected in parallel by red/yellow
wires, and earthed on black wires. 
						

							DESCRIPTION AND OPERATION
DEFENDER 97 MY4.23
INDICATORS / HAZARD WARNING LAMPS
DESCRIPTION
The indicators are controlled from the steering column switch and operate
when the ignition switch is in position II.
The hazard lamp switch is located towards the right hand side of the dash
panel. Hazard operation is not dependent on the position of the ignition switch.
When the hazard switch is depressed, both left and right hand indicator lights
flash.
OPERATION
Feed from the positive battery terminal is connected to the engine compartment
fuse box (C632-1) by a brown wire. Power flows through fusible link 2 (C907-2)
and feeds both the ignition switch (C028-1) and fuse 1 (C580-1) of the
passenger compartment fuse box on brown wires. The ignition switch and the
fuse 1 of the passenger compartment fuse box are connected in parallel. Fuse
1 (C580-2) is connected to the hazard warning lamp switch (C096-7) by a
purple wire.
Indicators
With the ignition switch in position II, power flows across the ignition switch
(C094-1) to fuse 3 of the passenger compartment fuse box (C580-5) by a white
wire. Fuse 3 of the passenger compartment fuse box (C580-6) is connected to
the hazard warning switch (C096-8) by a green wire. With the hazard warning
switch in the off position, power flows through the switch (C096-5) and up to
the flasher unit (C547-85) on a light green wire. The flasher unit is earthed
(C547- 86) on a black wire. With the flasher unit energized, a feed (C547-87) is
sent to the column switch (C036-3) on a green/brown wire. 
						

							DESCRIPTION AND OPERATION
4.24
DEFENDER 97 MY
Left Turn
Moving the column switch to the left turn position allows power to flow through
the switch (C036-4) to the LH rear direction indicator lamp (C403-2), the LH
front direction indicator lamp (C001-2), and the LH side repeater lamp
(C013-1). These 3 lamps are connected in parallel and are all fed by green/red
wires. Power is also supplied to the instrument pack warning lamp (C230-10)
on a green/red wire. All lamps are earthed on black wires. With the circuit
complete, the flasher unit commences opening and closing the circuit, causing
the LH indicator lamps to flash.
Right Turn
Moving the column switch to the right turn position allows power to flow through
the switch (C036-2) to the RH rear direction indicator lamp (C402-2), the RH
front direction indicator lamp (C002-2), and the RH side repeater lamp
(C012-1). These 3 lamps are connected in parallel and are all fed by
green/white wires. Power is also supplied to the instrument pack warning lamp
(C230-9) on a green/white wire. All lamps are earthed on black wires. With the
circuit complete, the flasher unit commences opening and closing the circuit,
causing the RH indicator lamps to flash. 
						

							DESCRIPTION AND OPERATION
DEFENDER 97 MY4.25
Hazards
The hazard warning switch (C096-7) is supplied with a permanent feed from
fuse 1 (C580-2) of the passenger compartment fuse box on a purple wire.
Pressing the switch to the on position allows power to flow through the switch
(C096-5) to the flasher unit (C547-85) on a light green wire. The flasher unit
(C547-87) is connected to the following via the hazard warning switch
(C096-2).
·Hazard warning lamp tell tale (C913-1) by a brown/red wire.
·RH front direction indicator lamp (C002-2) by a green/white wire.
·RH rear direction indicator lamp (C402-2) by a green/white wire.
·Instrument pack RH indicator warning lamp (C230-9) by a green/white wire.
·LH front direction indicator lamp (C001-2) by a green/red wire.
·LH rear direction indicator lamp (C403-2) by a green/red wire.
·Instrument pack LH indicator warning lamp (C230-10) by a green/red wire.
With the flasher unit energized, the circuit is repeatedly open and closed,
causing all indicator lamps to flash. 
						

							DESCRIPTION AND OPERATION
4.26
DEFENDER 97 MY
INTERIOR LAMPS
DESCRIPTION
Dependant on model, the Defender is provided with either one or two interior
lamps. One in the front, and one in the rear of the vehicle (if fitted). Both lamps
can be switched on manually using their integral switches. If any door,
including the tail door, are opened, the lamp(s) will illuminate.
If an immobilisation system is fitted to the vehicle, the lamps are controlled by
the Alarm ECU. The ECU contains a time out feature which switches off the
interior lamps after eight minutes if any door is left open, thus preventing
unnecessary battery drain.
OPERATION
Non - immobilisation (Defender 90 Hard Top only)
Feed from the positive battery terminal is connected to fusible link 2 (C632-1)
of the engine compartment fuse box by a brown wire. Fusible link 2 (C907-2) is
connected to fuse 2 (C580-3) of the passenger compartment fuse box by a
brown wire.
Fuse 2 of the passenger compartment fuse box (C580-4) supplies a current to
both the front (C317-3) and rear (C356-3) interior lamps on purple wires. Both
lamps are connected in parallel. The front interior lamp has an integral switch.
With this switch in the off (normal) position (C317-1) the lamp can only be
earthed by the LH (C266-1) and RH (C265-1) door switches. Both switches are
connected in parallel by purple/blue wires. With the front doors in the closed
position both door switches are open, failing to provide a route to earth.
Therefore the lamp does not illuminate. If either the LH or RH door is opened,
the circuit is completed and the front interior lamp will illuminate.
With the integral switch in the on position (C318-1) a direct route to earth is
provided on a black wire, illuminating the lamp.
The rear interior lamp (C356-1) is connected to the tail door switch (C751-1) by
a purple/blue wire. If the tail door is opened, the circuit is completed and the
rear interior lamp will illuminate. 
						

							DESCRIPTION AND OPERATION
DEFENDER 97 MY4.27
Immobilisation (Defender 90 & 110 Hard Top only)
Feed from the positive battery terminal is connected to fusible link 2 (C632-1)
of the engine compartment fuse box by a brown wire. Current flows through
fusible link 2 (C907-2) to fuse 2 (C580-3) of the passenger compartment fuse
box on a brown wire.
Fuse 2 of the passenger compartment fuse box (C580-4) is connected to the
front interior lamp (C317-2) by a purple wire. The interior lamp has an integral
switch. With this switch in the off (normal) position (C317-1), a feed is sent to
the alarm ECU (C061-1). The Alarm ECU is connected (C061-16) to the tail
door switch (C751-1) and the LH door switch (C033-1), which are wired in
parallel. Both are connected by purple/blue wires. With both of these doors
closed, the door switches are open, and fail to provide a route to earth for the
ECU. If either door is opened, the switch is closed, providing a route to earth
and illuminating the interior lamp.
The alarm ECU (C061-5) is also connected to the RH door switch (C054-1) on
a slate/white wire. With the door closed, the door switch is open, and fails to
provide a route to earth for the ECU. If the door is opened, the switch is closed,
providing a route to earth and illuminating the interior lamp.
With the interior lamp switch in the on position (C318-1), a direct route to earth
is provided on a black wire, illuminating the lamp.
The alarm ECU also receives a signal from the RF handset (see engine
immobilisation). When the correct signal is received, the alarm ECU will
illuminate the interior lamp. The lamp will remain illuminated until either the
alarm is re- armed using the handset, the ignition is switched to position II, or
the time out period elapses. 
						

							DESCRIPTION AND OPERATION
4.28
DEFENDER 97 MY
Immobilisation (Defender 110 Truck Cab only)
Feed from the positive battery terminal is connected to fusible link 2 of the
engine compartment fuse box (C632-1) by a brown wire. Fusible link 2
(C907-2) is connected to fuse 2 (C580-3) of the passenger compartment fuse
box by a brown wire.
Fuse 2 of the passenger compartment fuse box (C580-4) supplies a current to
the interior lamp (C357-3) on a purple wire. The interior lamp has an integral
switch. With this switch in the off (normal) position (C357-1) the only earth path
is via the alarm ECU (C061-1) on a purple/white wire.
The alarm ECU (C061-16) is connected to the LH door switch (C033-1) by a
purple/blue wire. If the LH door is closed, the door switch is open, and fails to
provide a route to earth for the ECU. If the door is opened, the switch is closed,
providing a route to earth and illuminating the interior lamp. The alarm ECU
(C061-5) is also connected to the RH door switch (C054- 1), this time by a
slate/white wire. The RH door switch operates in the same way as the LH door
switch.
With the interior lamp integral switch in the on position (C563-1), a direct route
to earth is provided on a black wire, illuminating the lamp.
The alarm ECU also receives a signal from the RF handset (see engine
immobilisation). When the correct signal is received, the alarm ECU will
illuminate the interior lamp. The lamp will remain illuminated until either the
alarm is re- armed using the handset, the ignition is switched to position II, or
the time out period elapses. 
						

							DESCRIPTION AND OPERATION
DEFENDER 97 MY4.29
Immobilisation (Defender 90 / 110 Station Wagon, & Crew Cab)
Feed from the positive battery terminal is connected to fusible link 2 (C632-1)
of the engine compartment fuse box by a brown wire. Fusible link 2 (C907-2) is
connected to fuse 2 (C580-3) of the passenger compartment fuse box by a
brown wire. Fuse 2 of the passenger compartment fuse box (C580-4) supplies
a current to the front interior lamp (C357-3) and the rear interior lamp (C925-3),
which are connected in parallel. Both lamps are fed by purple wires.
The front interior lamp has an integral switch. With this switch in the off
(normal) position (C357-1), the only earth path is via the alarm ECU (C061-1)
on a purple/white wire.
The alarm ECU (C061-5) is connected to the RH front door switch (C054-1) by
a slate/white wire. If the RH front door is closed, the door switch is open, and
fails to provide a route to earth for the ECU. If the door is opened, the switch is
closed, providing a route to earth and illuminating the interior lamp. The alarm
ECU (C061-16) is also connected to the LH front door switch (C033-1), this
time by a purple/blue wire. The LH front door switch operates in the same way
as the RH door switch.
Connected in parallel with the LH front door switch is the tail door switch
(C751-1), the RH rear door switch (C930-1), and the LH rear door switch
(C930-1). All three switches are connected by purple/blue wires and work in the
same way as the RH front door switch.
With the front interior lamp integral switch in the on position (C563-1), a direct
route to earth is provided on a black wire, illuminating the lamp. 
						

							DESCRIPTION AND OPERATION
4.30
DEFENDER 97 MY
The rear interior lamp operates in the same way as the front interior lamp.
When the integral switch is in the off (normal) position (C925-1), the only earth
path is via the alarm ECU (C061-1) on a purple/white wire. The door switches
are fed by the alarm ECU as before.
With the rear interior lamp integral switch in the on position (C563-1), a direct
route to earth is provided on a black wire, illuminating the lamp.
The alarm ECU also receives a signal from the RF handset (see engine
immobilisation). When the correct signal is received, the alarm ECU will
illuminate the interior lamp. The lamp will remain illuminated until either the
alarm is re- armed using the handset, the ignition is switched to position II, or
the time out period elapses.