SIGMA Category 1 - Manual (Page 6)

2. Operation of the Security System
Arming the Security System
Vacate the vehicle closing all windows, doors, boot and bonnet.
Give the radio transmitter button a quick press, whilst standing near the vehicle.
The security system will acknowledge arming with 4 flashes of the vehicle s hazard
warning lights and the doors will double-lock.
The security system will then enter a pre-set state , this state is used by the security
system s microprocessor to monitor the vehicle s internal environment before setting the
sensitivity of the ultrasonics.If a door, boot or bonnet has been inadvertently left open, the
siren will continuously bleep (dependent on programming) for 15 seconds as a warning to
close everything securely. If this happens, disarm the security system (see below), close
all doors etc. securely, and re-arm. Failure to do this within 15 seconds will result in the
siren sounding at full power.
Disarming the Security System
Give the radio transmitter button a quick press, whilst standing near the vehicle.
The security system will acknowledge disarming with 1 flash of the vehicle s hazard
warning lights and the doors will unlock.
Disarming & Operating Boot Release (2004 MY> Legacy saloon only)
Press the radio transmitter button to disarm the system in the normal way, however
continue to keep the button pressed for the boot release feature to operate.
The security system will acknowledge disarming with 1 flash of the vehicle s hazard
warning lights and the doors will unlock, shortly after this the boot will also open. The
button can now be released.
Ultrasonic Interior Protection
The interior protection system in the S U B A R U Category 1 Alarm System employs a
sophisticated microprocessor controlled ultrasonic method of detection. Unlike
conventional ultrasonic detectors this method ensures that an actual entry has occurred
rather than just air movement, air pressure fluctuation, seat belt movement, etc.
Whenever the system is armed:
Initially the dashboard LED flashes dimly for the first 15 seconds. During this period
the ultrasonic sensors are inactive. This allows the air movement inside the vehicle
to stabilise.
The dashboard LED will then flash brightly for the next 15 seconds. The ultrasonic
sensors are now active. The alarm system s microprocessor monitors the interior of
the vehicle, and will reduce the sensitivity (from the maximum sensitivity
programmed by the installer) if any background movement is detected that would
cause a false alarm (if excess movement is detected during this period the LED will
remain illuminated for a second, indicating that the sensitivity has been reduced).
After the first 32 seconds the dashboard LED will flash dimly again. The system is
now fully armed and the ultrasonic sensitivity is set to the programmed maximum or
the reduced level if some background movement was detected.
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