Land Rover Discovery 99my To 03my Electrical Library 3rd Edition Rover Manual

DESCRIPTION AND OPERATION
4.140DISCOVERY SERIES II
Transfer box in neutral warning lamp (if fitted)
The transfer box in neutral warning lamp is connected on an SK wire from the instrument 
pack pin C0233-16 via header C0293 LHD/ C0292 RHD to pin C0661-1 on the BCU. This 
connection is the serial data bus between the instrument pack and the BCU.
Refer to the Workshop Manual Transfer Box - LT 2305E for detailed Description and 
Operation of the transfer box in neutral warning lamp.
Main beam warning lamp...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.141
Transmission oil warning lamp
The transmission oil warning lamp is connected from the instrument pack pin C0230-7 on a 
BLG wire to header C0293. BLG wires from header C0293 are connected to the 
transmission oil temperature sensors. The sensors are located in the gearbox oil cooler and 
the rear of the transfer gearbox.
If an earth path is completed on pin C0230-7 the instrument pack logic circuit monitors this 
as an input and provides power from the...

DESCRIPTION AND OPERATION
4.142DISCOVERY SERIES II
Coolant temperature gauge
The coolant temperature gauge is connected from pin C0233-15 on a GU wire to the ECM 
pin C0636-44 V8/C0658-7 Td5.
Refer to the engine management section in the workshop manual for details of operation.
Tachometer
The tachometer gets an engine speed signal via pin C0230-15 of the instrument pack. Pin 
C0235-15 is connected on a WS wire via header C0291 to pin C0637-17 V8/C0658-19 Td5 
on the ECM.
Refer to the engine management...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.143
HORNS
DESCRIPTION
General
Two horns are located in the left and right hand sides of the front panel, forward of the 
radiator. The horns are operated by pushing either of two buttons located on the upper 
spokes of the steering wheel. One horn emits a low tone, the other a high tone. Each horn 
produces a sound of between 93 and 112 db at a distance of 7 m (23ft).
Each horn switch is connected to the horn circuit via a rotary coupler in the steering...

DESCRIPTION AND OPERATION
4.144DISCOVERY SERIES II
CLOCK
DESCRIPTION
General
The digital clock is located on the facia. The clock receives a permanent feed from the 
battery and is illuminated when the ignition switch is in position I or II.
OPERATION
Clock Supply
Circuit supply
A feed from the battery positive terminal is connected by an R wire to the engine 
compartment fusebox, where it passes to fusible links 3 and 8 and to fusible links 1 and 7, 
which are connected in series. The feed from fusible...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.145
CIGAR LIGHTER
DESCRIPTION
General
The cigar lighter is located in the centre console. The socket accepts a standardized plug 
type. The lighter is operated by depressing the centre of the lighter which latches the heated 
element into the holder.
OPERATION
Cigar Lighter Supply
Circuit supply
A feed from the battery positive terminal is connected by a R wire to the engine compartment 
fusebox, where it passes to fusible link 8 and fusible links 1 and 7...

DESCRIPTION AND OPERATION
4.146DISCOVERY SERIES II
Cigar Lighter Operation
With the ignition switch in position I or II the supply circuit is completed as the auxiliary relay 
is closed. Current is available at the cigar lighter.
When the cigar lighter is pushed into its holder, a central contact on the element completes 
the circuit and current flows through the element to earth on a B wire via header C0286 LHD/
C0288 RHD and earth header C0018.
Locking clips in the holder hold the cigar lighter in...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.147
ACCESSORY SOCKET
DESCRIPTION
General
The accessory socket is located behind the rear seats in the LH trim panel and is of similar 
construction to the cigar lighter socket. The socket has a maximum power rating of 180 
Watts and accepts a standardised plug type. The location of the accessory socket is 
illuminated when the side lights are switched on.
OPERATION
Accessory Socket Supply
Circuit supply
A feed from the battery positive terminal is connected...

DESCRIPTION AND OPERATION
4.148DISCOVERY SERIES II
IN-CAR ENTERTAINMENT (ICE)
DESCRIPTION
General
The base and mid-line systems are contained within the same wiring diagram, the high-line 
system and the combined ICE/navigation system each have separate wiring diagrams. This 
section covers all three wiring diagrams.
Base and Mid-Line In-Car Entertainment Description
Base ICE description
The base in-car entertainment system consists of a head unit, located in the centre of the 
fascia, four 30 Watt...

DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.149
Ignition switch supply
When the ignition switch is in position II, the feed from fusible link 8 in the engine 
compartment fusebox flows to the passenger compartment fusebox on a NW wire.
From the passenger compartment fusebox the feed is connected to the ignition switch on an 
N wire. The feed from the ignition switch is connected to fuse 26 in the passenger 
compartment fusebox on an LGW wire.
From fuse 26 the feed is connected on an LG wire to the...