ELECTRICAL
ANTI-THEFT ALARM DESCRIPTION (96 MODELS)
NOTE: The alarm system provides security
protection under wide ranging
CONTROL SYSTEM
circumstances and is fully programmable
to meet market requirements; consequently some
of the features listed will vary dependent on
vehicle model or territory.
Electronic control unit (ECU) and relays
The ECU is the alarm system ’brain’ and controls all
alarm functions. It responds to inputs received, by
supplying suitable outputs to indicate the status of the
alarm system or activating the relevant warning
devices.
The handset is intended to be the primary source of
control for the alarm system. The key should only be
used in the event of handset failure or if perimetric
arming only is required.
Handset
Immobilisation
The handset is the primary source of control for the
alarm system i.e. it locks and unlocks the vehicle,
arms and disarms the alarm.
After a time period the vehicle is automatically
immobilised regardless of whether or not the alarm is
armed.
Door key
Mobilisation
The vehicle may be locked using the key (perimetric
arming only).
The handset provides the normal means of
mobilisation. In the event of handset failure, the key
may be used to enter the emergency key access
code.
NOTE: The vehicle MUST be unlocked
using the handset. The key may be used to
unlock the vehicle if the handset fails to
operate, see operation, Emergency key access.
Perimetric arming
Passive coil
Provides protection whilst the vehicle is still occupied.
Volumetric arming
The passive coil is located around the starter switch
and triggers the handset (usually located on the
keyring) if it is within close proximity.
If movement within the vehicle is detected the alarm
will be triggered.
Aerial
NOTE: Perimetric arming always
accompanies volumetric arming.
The aerial is a floating connection which supplies the
alarm ECU with the signal received from the handset.
Built-in test
Immobilisation unit (spider)
The alarm system has a built-in test procedure, but if
possible any fault finding should normally be
undertaken using TestBook.
Dependent on model or territory, the system may be
fitted with an immobilisation unit which is discreetly
located and provides an interface between the ECU
and immobilised areas of the vehicle.
Emergency key access (EKA)
In the event of handset failure the alarm can be
disarmed by entry of the EKA code which is unique to
each vehicle.
DESCRIPTION AND OPERATION
7
| Categories | Land Rover Discovery, Range Rover |
|---|---|
| Tags | Land Rover |
| Model Year | 1995 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Name | Discovery |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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