Freelander System Description and Operation
SECURITY
DESCRIPTION AND OPERATION
86-5-9
Alarm Activated
The audible and visual warnings are activated by the CCU when an alarm trigger is received by the CCU, is market
selectable. The audible warning can be a constant tone from the horn for a period of 30 seconds or an intermittent
tone from the horn for 30 seconds, with the horn sounding for 0.5 seconds and off for 0.5 seconds. The visual warning
is flashing of the hazard warning lights for 30 seconds.
When a BBUS is fitted, all alarm and miss-lock warnings will be sounded via the BBUS.
Alarm Reset
When the alarm has been activated, it can be silenced, with the ignition 'off', by either disarming or repeat arming
using the vehicle key or the remote handset.
Battery Backed Up Sounder
The BBUS is market programmable and when fitted will provide security warnings: alarm sounder and mislock.
In the event of a tamper detection i.e. power loss to the BBUS, the sounder can only be silenced with reconnection
of power to the BBUS and a disarm request followed by an arm request.
In the alarm armed condition the BBUS will sound if it detects a power supply/battery disconnection. If the alarm is
not armed the BBUS can be disconnected without the device sounding. Therefore, to prevent the BBUS sounding
inadvertently, before any work on the vehicle which requires battery disconnection is carried out, ensure the alarm is
not armed.
It is recommended that the BBUS is changed after three years due to limits of battery life.
Remote Handset (RF Transmitter)
Two remote handsets are supplied with each vehicle. Two buttons on the handset control the locking and unlocking
and alarm arm and disarm functions remotely. The remote handset transmits a coded signal which is recognized by
the RF receiver. If the handset battery is removed or changed, or the vehicle battery is disconnected, the
synchronization of the handset and the RF receiver will be lost.
Remote Handset Re-synchronization
Re-synchronization can be achieved using the handset by operating either handset button five times in quick
succession with the ignition off.
Remote Handset Battery Low Warning
If the remote handset battery voltage becomes low, when the handset transmits a signal to the CCU, it also transmits
a low battery signal when the driver's door is opened. The CCU buzzer sounds a 10 second warning and the alarm
LED flashes for 10 seconds to signify to the driver that the handset battery requires replacement. When the battery is
replaced, the remote handset will require re-synchronization with the CCU.
Replacement Handset Programming
Remote handset replacements will require synchronising. This is achieved using TestBook/T4 (security diagnostics)
to enter two bar code serial numbers, supplied on a label with the handset, into one of four code positions in the CCU.
Diagnostics
A diagnostic socket allows the exchange of information between the CCU and TestBook/T4. The diagnostic socket is
located in the driver's footwell and is constructed to ISO standard. A dedicated diagnostic bus is connected between
the socket and the CCU and allows the retrieval of diagnostic information and programming of certain functions to be
performed using TestBook/T4.
The CCU monitors all inputs and outputs and if a fault is detected a code for that fault is stored in a fault log. The CCU
has two fault logs for internal and external faults. The CCU is capable of detecting short or open circuits. The CCU
will disable certain functions when faults are detected and reinstate functions when faults are corrected and the
function is again requested.