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Range Rover 2. Electrical Manual - part 33

HORNS

CIRCUIT DIAGRAM

F41

20 A

P125a
Engine Compart-
ment Fuse Box

[9]

Horn Relay

RL9

[9]

C161

E154

C161

S101

K128
Left Horn

1 C196

E181

2 C196

S111

K134
Right Horn

See Ground Dis-
tribution

C174

C120

Z238
Body Electrical
Control Module
(BECM)

C257

C235

LGR

Z119
Rotary Coupler

C247

X269
Steering Wheel
Switches

[8]

Horn

[8]

C247

Z119
Rotary Coupler

E252

S215

See Ground Dis-
tribution

C235

LGR

RADIO

CIRCUIT OPERATION

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

CIRCUIT OPERATION

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)

CIRCUIT DIAGRAM

REV: 07/98

See Ground
Distribution

S209

C226

C341

C226

S210

S212

Coaxial Cable

C340

Z111
Radio

Z178
Right Antenna
Amplifier

Z181
Right Side
Window Antenna

S205

See Fuse Details

C325

C258

F 1

10 A

F 8

30 A

Z238
Body Electrical
Control Module
(BECM)

Low Line Radio

RL 7

S208

E252

C318

Interior Lamps

Heating and
Ventilation

E361

Up to VIN 359268

From VIN 359269

Content .. 31 32 33 34 ..