Theft Warning Alarm

The theft warning alarm function activates horns and headlamps intermittently when BCM detects that any door, hood or back door is opened by unauthorized means, while the system is in the ARMED state.

Operation Flow

Courtesy of NISSAN NORTH AMERICA, INC.

No.	System state	Switching condition
	DISARMED to PRE-ARMED	When all conditions of A and one condition of B is satisfied.	A	B
			Ignition switch: OFF All doors: Closed	All doors are locked by: LOCK button of Intelligent Key Door request switch
	PRE-ARMED to ARMED	When none of the following conditions are satisfied for 30 seconds.	Ignition switch: ON UNLOCK button of Intelligent Key: ON Door request switch: ON Automatic back door open: Hands free sensor or automatic back door button of Intelligent Key
	ARMED to ALARM	When one of the following condition is satisfied.	Any door: Closed to open Hood: Closed to open
	PRE-ARMED to DISARMED	When one of the following condition is satisfied.	Ignition switch: ON UNLOCK button of Intelligent Key: ON Door request switch: ON Automatic back door open: Hands free sensor or automatic back door button of Intelligent Key
	ARMED to DISARMED
	ALARM to DISARMED
	RE-ALARM	When one of the following condition is satisfied after the ALARM operation is finished.	Any door: Closed to open Hood: Closed to open

NOTE: To lock/unlock all doors by operating remote controller button of Intelligent Key or door request switch, Intelligent Key must be within the detection area of outside key antenna. For details, refer to System Description .

DISARMED Phase

The vehicle security system is not set in the DISARMED phase. The vehicle security system stays in this phase while Any door other than back door is open, because it is assumed that the owner is inside or nearby the vehicle.

When the vehicle security system is reset, each phase switches to the DISARMED phase directly.

PRE-ARMED Phase

The PRE-ARMED phase is the transient state between the DISARMED phase and the ARMED phase. This phase is maintained for 30 seconds, so that the owner can reset the setting due to a mis-operation. This phase switches to the ARMED phase when vehicle conditions are not changed for 30 seconds.

To reset the PRE-ARMED phase, refer to the switching condition of No. 4 in the table above.

ARMED Phase

The vehicle security system is set, and BCM monitors all necessary inputs. If any door or hood is opened without using Intelligent Key, vehicle security system switches to the ALARM phase.

To reset the ARMED phase, refer to the switching condition of No. 5 in the table above.

ALARM Phase

BCM transmits "horn request" signal and "High Beam Request" signal intermittently to IPDM E/R via CAN communication. In this phase, horns and headlamps are activated intermittently for approximately 27 seconds to warn that the vehicle is accessed by unauthorized means. After 27 seconds, the vehicle security system returns to the ARMED phase. At this time, if BCM still detects unauthorized access to the vehicle, the system is switched to the ALARM phase again. This RE-ALARM operation is carried out a maximum of 3 times.

To cancel the ALARM operation, refer to the switching condition of No. 6 in the table above.

NOTE: If a battery terminal is disconnected during the ALARM phase, theft warning alarm stops. But when the battery terminal is reconnected, theft warning alarm is activated again.