Land Rover Range Rover Electrical Library Lm 2nd Edition Rover Manual

DESCRIPTION AND OPERATION
4.86RANGE ROVER
Glove Box Lamp
The BCU (C0662) monitors the condition of the glove box switch (C0227) by providing a feed 
on a RY wire. When the glove box is opened, the switch contacts close creating a path to 
earth on an N wire.
Automatic Mode
When the interior lamps are in automatic mode and any of the doors are opened, the BCU 
(C0662) provides a feed to all the interior lamps listed in the  Body Control Unit (BCU)  
section previously. Current flows across the lamps to...

DESCRIPTION AND OPERATION
RANGE ROVER 4.87
INTERIOR ILLUMINATION
DESCRIPTION
General
Operation of the interior illumination LEDs and lamps is controlled by the Light Check 
Module (LCM). The LCM is located at the base of the RH A post, and powers the LEDs and 
lamps when the ignition switch is in either the auxiliary or ignition position, and the lighting 
switch is in either the side or headlamp position.
OPERATION
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible...

DESCRIPTION AND OPERATION
4.88RANGE ROVER
Light Check Module (LCM)
When the LCM (C2039) senses that the ignition switch is in either the auxiliary or ignition 
position, and the lighting switch is in either the side or headlamp position, it provides a feed 
to the following lamps on SR wires:

RH inner face level air vent illumination (C1295)

RH outer face level air vent illumination (C1200)

LH inner face level air vent illumination (C1294)

LH outer face level air vent illumination (C1199)

Clock...

DESCRIPTION AND OPERATION
RANGE ROVER 4.89
All the above are earthed on N wires. The LCM also provides a feed to the following LEDs 
on SR wires:

Front interior lamp LEDs (C0355)

Rear interior lamp LED (C0357)

RH rear door handle LED (C2335)

LH rear door handle LED (C2335)
NOTE: The LH and RH rear door handle LEDs have the same connector number as 
they utilise the same harness.
All the above are earthed on N wires.
Drivers Door Module
When the drivers door module (C2058) receives an illumination...

DESCRIPTION AND OPERATION
4.90RANGE ROVER
INSTRUMENTS
DESCRIPTION
General
The instrument pack is a totally electronic device which receives analogue or digital signals 
via hardwired or bus systems for instrumentation operation. The instrument pack has two 
main functions:

To provide the driver information on vehicle status

To process and relay digital signals to and from other system controlling ECUs.
The signals are processed by two microprocessors which transpose the data into analogue 
gauge...

DESCRIPTION AND OPERATION
RANGE ROVER 4.91
Analogue Instruments
Speedometer
The ABS ECU (C0506) provides the instrument pack (C0230) a pulsed signal on an SB wire. 
The instrument pack calculates the vehicle speed from this signal and broadcasts it to other 
systems via the CAN, I, and K buses.
Tachometer
The instrument pack (C0234) receives an engine speed signal from the Engine Control 
Module (ECM) via the CAN bus on YN (low) and YB (high) wires.
Fuel Level Gauge
The instrument pack (C0234) provides a...

DESCRIPTION AND OPERATION
4.92RANGE ROVER
HORNS
DESCRIPTION
General
Two horns are located behind the RH side of the front bumper. Operation of the horns is 
controlled by the two steering wheel mounted switches when the ignition switch is in either 
the auxiliary or ignition position. 
OPERATION
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fuse 10 and fuse 53 of the 
passenger compartment fuse box (C0632) on an R wire. Fuse 10 is connected to the switch 
contacts of...

DESCRIPTION AND OPERATION
RANGE ROVER 4.93
CLOCK
DESCRIPTION
General
The analogue clock is mounted on the passenger side of the centre console, and is 
illuminated when the fascia mounted rotary lighting switch is turned to either the side or 
headlamp position.
OPERATION
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fuse 13 of the passenger 
compartment fuse box (C0632) on an R wire. Fuse 13 (C0586) provides a constant battery 
feed to the clock (C0232) on an RG wire....

DESCRIPTION AND OPERATION
4.94RANGE ROVER
CIGAR LIGHTERS
DESCRIPTION
General
Two cigar lighters are fitted to Range Rover. The front cigar lighter is located in the front of 
the centre console for use by the driver and front passenger. The rear cigar lighter is located 
in the rear of the centre console for use by the rear seat passengers.
When the cigar lighter element is pushed into the cigar lighter, power is automatically 
switched through its locking clips to the heater coil. As current passes...

DESCRIPTION AND OPERATION
RANGE ROVER 4.95
ACCESSORY SOCKETS
DESCRIPTION
General
Two accessory sockets are fitted to Range Rover. The front accessory socket is located in 
the storage compartment at the rear of the centre console. The rear accessory socket is 
located on the RH side of the luggage compartment, behind a protective cover.
Both accessory sockets provide battery voltage to any approved Land Rover accessory.
CAUTION: The cigar lighter should NOT be used for accessory power or damage may...