System Description - Anti-Theft Function
ANTI-THEFT FUNCTION1. ARM FUNCTION
Pressing the remote key lock button will result in a 0.5-second pulse issued to lock all doors.
Pressing the remote keypad unlock button once will result in a 0.5-second unlock pulse issued to unlock all doors.
As part of the arming sequence, the alarm first enters a pre-armed state before falling into the armed state. During this pre-armed state, the alarm triggers are ignored. Pre-armed state can be reached from the alarmed state, the start inhibit state or the disarmed state. Pre-Arming of the alarm can be achieved by a press of the lock button on the remote key.
In the pre-armed state the visible and audible warnings are disabled.
This system enters the armed state if it is in the prearmed state and, after 0.6 sec, check actuator lock and each door, hood and trunk close, and no door warning switch (no key in ignition).
On entering the arm state, a single flash of the hazard lamps is given, period of cycle 2 second, duty rate 50%.
If transmitter(TX) lock signal is received when a door, trunk or hood is open, then lock output is given but a flash of hazard is not given.
After the armed state is entered, if a lock signal is received then a single flash of the hazard lamps is given, period of cycle 2 second, duty rate 50%.
The armed state cannot be reached by locking the car with the keys.
2. DISARM FUNCTION
Disarming can be performed while the alarm is armed, or alarming, or after alarming. The alarm can be disarmed by the following methods:
- Pressing the unlock button on the transmitter(TX) key. The hazard lamps shall be flashed twice for 1 sec period (of cycle), 50% duty rate.
- If door warning switch is on, IGN1 and IGN2 are on in arm state, then arm state should be immediately cancelled. This means that the driver is inside the vehicle before pushing TX lock, so system should not arm.
In the disarm state the visible and audible warnings are disabled and start is enabled.
In the disarm state, if TX key unlock command is received, then the hazard lamps shall flashed twice for a period of cycle 1 sec, 50% duty rate.
3. ALARM FUNCTION
Once armed, should any door, hood or the trunk be opened, then.
- Starter relay drive output is disabled, so starting is inhibited.
- Audible (siren) and visual (hazard lamp) warnings are issued, for three cycles, each cycle 27 ± 12 sec duration on, 10 ± 1 sec off. The siren warning is continuously occurring during the on period. The hazard lamps operate with 1 sec period, 50 % duty rate during the on period.
The alarm is given in the case where a door is opened with a key.
After this time, the system maintains the start inhibit state, where no audible and visual warnings are issued but engine starting is not possible.
4. OPERATION DURING ALARM CONDITIONS
1. Cancelling audible alarm with the remote transmitter.
CASE 1: Door closed
During or after alarming and then closing all doors and a transmitter (TX) lock signal is received Then
- The lock command is executed with 0.5 sec ON
- Siren and start inhibition are OFF
- Hazard lamp is flashed one time (period: 2 sec, duty: 50%, within 2 sec)
- The state goes to arming mode (after a lock state check)
- The starter is enabled
CASE 2: Door Open
During or after alarming, with a door open and a TX lock signal is received Then
- The lock command is executed with 0.5 sec ON
- Siren is disabled and start is enabled after confirmation of actuator lock
At this time, when the door is closed,
- Hazard lamp is flashed one time (period: 2 sec, duty 50%)
- The state goes to arming mode
2. New alarm conditions
Second alarm condition during alarming.
When another alarm occurs during alarming, the starting is disabled, and the alarm continues to sound for the remained time of warning signal. The alarm continues to sound after the second alarm condition is removed.
New alarm condition occurs after alarming (with all entrances closed)
If any entrance is opened again then
- The siren is ON 3 times
- Start is disabled
- Hazard lamps flash during the ON time of siren
New alarm condition occur after alarming (with any entrance open).
If another entrance is opened, the ETACS module keeps start disabled and there is no siren output.
3. Key operation during alarm
After the alarm state or start inhibit state are entered, if door warning switch on (key in ignition) & IGN 2 ON, if IGN 2 state is changed to OFF within 30 sec, remain in alarm state.
4. Disarming using the key
During alarming, in case that door warning switch (key in) is ON and then IGN1 and IGN2 are both ON for 30 sec continuously, the alarm is cancelled, and the system enters the disarm state. After alarming, in case that door warning switch (key in) is ON and then IGN1 and IGN2 are both ON for 30 sec continuously, the alarm is cancelled and the system enters the disarm state.
5. ALARM STATE IN POWER DOWN
If the battery is disconnected to the ETACS module in the following states
- Alarm
- After alarming
Upon restoring the battery the alarm state shall be entered and the alarm cycle shall restart (timer reset to 0).
6. ALARM HOLD MODE
1. In case of opening the trunk by trunk unlock switch during arm state, the alarming is hold. When received transmitter TX) trunk signal in arm state, trunk open by output trunk lid open relay signal for 500 ms and then holding alarm. But the door and hood is still in the arm state.
2. Trunk is going to the arm state just case trunk is still closed for 2 sec