DESCRIPTION AND OPERATION
RANGE ROVER 4.3
OPERATION
Anti-Theft Alarm
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 1, fuse 15, fuse 43,
and fuse 53 (C0632) on an R wire. All are located in the passenger compartment fuse box.
Fuse 15 (C0586) provides a constant battery feed to the Body Control Unit (BCU) (C0660)
on an RS wire. The BCU (C0660) is earthed on an NB wire.
Fusible link 1 (C0588) provides a constant battery feed to fuse 14 of the rear fuse box
(C2024) on an R wire. Fuse 14 (C2022) provides a constant battery feed to the radio
frequency (RF) receiver (C0674) on an RB wire.
Fuse 43 of the passenger compartment fuse box (C0586) provides a constant battery feed
to the following:
l The Battery Backed-Up Sounder (BBUS) (C0666) on an RN wire.
l The volumetric sensor (C0359) on an RW wire.
l The tilt sensor (C0960) on an RB wire.
Fuse 53 of the passenger compartment fuse box (C0583) provides a constant battery feed
to the ignition switch (C0099 on Td6 vehicles, C0028 on V8 vehicles) on an R wire. When
the ignition switch is turned to the 'ignition' position, current flows across the switch (C0099
on Td6 vehicles, C0028 on V8 vehicles) to fuse 6 of the passenger compartment fuse box
(C0585) on a G wire. Fuse 6 (C0587) provides an ignition feed to the interior mirror (C0698)
on a GW wire.
RF Receiver
The RF receiver (C0674) is located at the top of the upper tail door, and is provided a
constant battery feed from fuse 14 of the rear fuse box (C2022) on an RB wire. The RF
receiver is connected to an element in the rear screen via a pair of B wires. The RF receiver
uses the rear screen element as an aerial.
NOTE: The B wires connecting the RF receiver to the rear screen element are not shown on
the system circuit diagrams as they are fly leads incorporated into the manufacture of the
rear screen.
The RF receiver converts high frequency wave forms transmitted by the remote handset into
bi-phase, pulsed signals that can be understood by the BCU. The RF receiver (C0674) is
connected to the BCU (C0660) by a WY wire.
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