Range Rover 2. Electrical Manual — part 33
HORNS
E5
1
CIRCUIT DIAGRAM
30
F41
20 A
P125a
Engine Compart-
ment Fuse Box
[9]
Horn Relay
30
86
85
87
RL9
[9]
1
C161
E154
2
C161
B
S101
K128
Left Horn
PB
1 C196
E181
2 C196
B
S111
K134
Right Horn
See Ground Dis-
tribution
See Ground Dis-
tribution
PB
5
7
6
C174
PN
7
C120
Z238
Body Electrical
Control Module
(BECM)
17
C257
PB
4
C235
LGR
Z119
Rotary Coupler
4
C247
X269
Steering Wheel
Switches
[8]
Horn
0
[8]
6
C247
PB
PB
Z119
Rotary Coupler
E252
S215
See Ground Dis-
tribution
5
C235
B
LGR
RADIO
E6
CIRCUIT OPERATION
1
CIRCUIT OPERATION
Battery Voltage is provided to the radio at all times
through the P wire. In addition to the anti–theft
feature, this input voltage keeps the preset station
memory alive. Whenever battery power to the unit is
lost, the anti–theft code must be entered and the
preset stations must be reprogrammed.
When the Radio (Z111) and the igntion are turned
on, the voltage signal through the WK wire to the
control head ‘wakes up’ the unit. The Radio (Z111)
plays, the LCD display comes on and the control
buttons illuminate. On some models, when the park
lamps or headlamps are turned on, a voltage signal
is sent through the RW wire to dim the LCD display
and control buttons for night driving.
Radio (Z111) signals are received via a coaxial cable
from the side screens and antenna amplifiers. The
amplifiers filter and boost the signal from the side
screen, using power supplied on WO wires,
whenever the Ignition Switch (X274) is in position I
or II.
The CD Changer (Z114) is permanently supplied
with power through the P wire via the radio and a
DIN cable.
For the new Range Rover, three levels of
factory–fitted in–car entertainment are available.
The mid/low line radio has the following features:
Electronically tuned AM/FM cassette radio (Z111),
RH antenna amplifier (Z178) for AM/FM signals and
6, 8 or 10 speakers.
The high line (NAS/JAPAN) radio has the following
features: Electronically tuned AM/FM cassette radio
(Z111), RH antenna amplifier (Z178) for AM/FM
signals, LH antenna amplifier (Z177) for FM signals
only, 4 door speaker amplifiers (Z241, Z242, Z245,
Z246), a subwoofer amplifier (Z176), a CD changer
(Z114) and 10 speakers plus a subwoofer speaker
(K146).
Subwoofer
The subwoofer amplifies frequencies between 20
and 150 Hz to give an enhanced bass sound.
Subwoofer Amplifier
The Subwoofer (K146) is supplied with power and
ground from the Subwoofer Amplifier (Z176) via two
separate channels which consist of 4 BW/B wires.
The subwoofer amplifier (Z176) is permanently
supplied with power on the P wire, but it is only
switched on when the radio supplies a signal on the
SB wire.
Speaker Amplifier
The Speaker Amplifiers (Z241, Z242, Z245, Z246)
are situated in the 4 doors and are supplied with
permanent power via the P wire. They are switched
on when the radio sends a signal on the SB wire.
The speaker amplifiers (Z241, Z242, Z245, Z246)
have one channel for the bass speakers (K202,
K203, K209, K220) and a second for the midrange
speakers (K200, K201, K2111, K212) and tweeter
speakers (K197, K198) (front doors only). The
tweeter incorporates a capacitor to filter the signals.
RADIO
E6
CIRCUIT OPERATION
2
Side Screen Antenna
The antenna is printed into the rear side screen. For
NAS and Japan, the element is fitted in both rear
side screens. This is referred to as a diversity
antenna system. Other markets have a single
element in the right hand screen only. Diversity
reception means that as vehicle movement results in
loss of signal due to reflections from buildings
(known as multipath distortion), the radio will switch
to the antenna receiving the strongest signal. This
results in less interference and better stereo
performance.
Antenna Amplifier
Antenna amplifiers are in the LH and RH side of the
luggage compartment behind trim panel.The FM and
AM amplifier would be located on the right hand
side, and the FM only amplifier is located on the left
hand side.
Speakers
Trim level 1/2 – The low/midline radio is equipped
with 6, 8 or 10 speakers fitted in the doors. The
midrange speakers (K200, K201, K211, K212) are
filtered by capacitors in the wires (K239, K240,
K247, K248) and the tweeter speakers (K197, K198)
filter the signals by built–in capacitors.
Trim level 3 – the high line is equipped with 10
speakers like the trim level 1/2, but they all receive
power and ground via 4 additional speaker
amplifiers. The signals for the tweeter speakers
(K197, K198) are filtered by their internal capacitors,
similar to the mid/low line tweeters.
RADIO (LOW LINE)
E6
3
CIRCUIT DIAGRAM
REV: 07/98
See Ground
Distribution
S209
B
8
C226
4
6
7
C341
C226
S210
S212
Coaxial Cable
C340
Z111
Radio
Z178
Right Antenna
Amplifier
Z181
Right Side
Window Antenna
S205
See Fuse Details
5
C325
6
C258
2
7
30
F 1
10 A
RW
WK
WO
P
30
F 8
30 A
Z238
Body Electrical
Control Module
(BECM)
Low Line Radio
RL 7
S208
E252
1
C318
Interior Lamps
Heating and
Ventilation
B
E361
Up to VIN 359268
From VIN 359269
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