System Description

SYSTEM DIAGRAM

Courtesy of NISSAN NORTH AMERICA, INC.

Component		Function
Door lock and unlock switch		Door lock/unlock switch detects door lock/unlock operation and transmits door lock and unlock switch signal to BCM.
Outside key antenna		Outside key antenna detects whether Intelligent Key is within the detection area or not, and then transmits signal to BCM.
Door request switch		Door request switch (passenger side) detected door lock/unlock operation and transmits door request switch signal to BCM.
Door switch		Door switch (passenger side) detects door open/close condition and then transmits ON/OFF signal to BCM.
Remote keyless entry receiver		Remote keyless entry receiver receives each button operation signal and electronic key ID signal from Intelligent Key, and then transmits the signal to BCM.
IPDM E/R		IPDM E/R operate horns and headlamp with theft warning signal and high beam request signal received from BCM.
BCM		BCM controls VEHICLE SECURITY SYSTEM. BCM transmits theft warning horn request signal and high beam request signal intermittently to IPDM E/R via CAN communication.
Horn		Horn high operate for warning vehicle surroundings when VEHICLE SECURITY SYSTEM operates.
TCU		TCU transmits panic alarm request signal to BCM when panic alarm request is received from Infiniti Connection™ date center.
Headlamp		Headlamp operate for warning vehicle surroundings when VEHICLE SECURITY SYSTEM operates. Panic alarm function activates headlamp intermittently when operating a cellular phone using the Telematics system.
Hood switch		Refer to Hood Switch .
Security indicator lamp		Security indicator lamp is located on combination meter.
Push-button ignition switch	Push switch	Push-button ignition switch has push switch inside which detects that push-button ignition switch is pressed, and then transmits ON/OFF signal to BCM. BCM change the ignition switch position with the operation of push-button ignition switch. BCM maintains the ignition switch position status while push-button ignition switch is not operated.

BCM INPUT/OUTPUT SIGNAL CHART

Input Signal Item

Transmit unit	Signal name
IPDM E/R	CAN communication	Hood switch signal
TCU	CAN communication	Panic alarm request signal
Remote keyless entry receiver	Key ID signal Each button operation signal
Push-button ignition switch	Push switch signal
Each door switch	Door switch signal
Each door request switch	Door request switch signal
Door lock and unlock switch	Door lock and unlock switch signal

Output Signal Item

Reception unit	Signal name
IPDM E/R	CAN communication	Theft warning horn request signal High beam request signal
Security indicator lamp	Security indicator lamp signal

SYSTEM DESCRIPTION

The vehicle security system has two alarm functions (theft warning alarm and panic alarm), and reduces the possibility of a theft or mischief by activating horns and headlamps intermittently.

The panic alarm does not start when the theft warning alarm is activating, and the panic alarm stops when the theft warning alarm is activated.

The priority of the functions are as per the following:

Priority	Function
1	Theft warning alarm
2	Panic alarm

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.
Security indicator lamp on combination meter always blinks when ignition switch is any position other than ON. Security indicator lamp blinking warns that the vehicle is equipped with a vehicle security system.

Operation Flow

Courtesy of NISSAN NORTH AMERICA, INC.

System state	Switching condition
DISARMED to PRE-ARMED	When all conditions of A and one condition of B is satisfied.	A	B
DISARMED to PRE-ARMED		Ignition switch: OFF All doors: Closed Hood: 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: ACC/ON UNLOCK button of Intelligent Key: ON Door request switch: ON UNLOCK switch of door lock and unlock switch: ON Any door: Open Hood: Open
ARMED to ALARM	When one condition of A and one condition of B are satisfied.	Any door: Open Hood: Open
DISARMED to PRE-RESET	When all conditions of A and one condition of B is satisfied.	A	B
DISARMED to PRE-RESET		Ignition switch: OFF All doors: Closed Hood: Open	All doors are locked by: LOCK button of Intelligent Key Door request switch
PRE-ARMED to PRE-RESET	The following conditions are met.	Hood: Open
ARMED to PRE-RESET	The following conditions are met.	Back door opener switch: ON
ALARM to PRE-RESET	The following conditions are met.	Back door opener switch: ON
PRE-RESET to DISARMED	When one of the following conditions is satisfied.	Ignition switch: ACC/ON UNLOCK button of Intelligent Key: ON Door request switch: ON UNLOCK switch of door lock and unlock switch: ON Any door: Open
PRE-RESET to PRE-ARMED	When all conditions of A are satisfied, and all conditions of B are satisfied.	A	B
PRE-RESET to PRE-ARMED		Ignition switch: OFF All doors: Closed	Hood: Closed Back door: Closed
PRE-ARMED to DISARMED	When one of the following condition is satisfied.	Ignition switch: ACC/ON UNLOCK button of Intelligent Key: ON Door request switch: ON UNLOCK switch of door lock and unlock switch: ON Any door: Open
ARMED to DISARMED	When one of the following condition is satisfied.	Ignition switch: ACC/ON UNLOCK button of Intelligent Key: ON Door request switch: ON
ALARM to DISARMED	When one of the following condition is satisfied.
RE-ALARM	When one of the following condition is satisfied after the ALARM operation is finished.	Any door: Open Hood: 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 is open, because it is assumed that the owner is inside or nearby the vehicle. Security indicator lamp blinks every 2.4 seconds. 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. Security indicator lamp illuminates while being in this phase. To reset the PRE-ARMED phase, refer to the switching condition of No. 10 in the table above.

ARMED Phase

The vehicle security system is set, and BCM monitors all necessary inputs. If any door, hood, or back door is opened without using Intelligent Key or mechanical key, vehicle security system switches to the ALARM phase. Security indicator lamp blinks every 2.4 seconds. To reset the ARMED phase, refer to the switching condition of No. 11 in the table above.

ALARM Phase

BCM transmits "Theft Warning 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 50 seconds to warn that the vehicle is accessed by unauthorized means. ON/OFF timings of horns and headlamps are synchronized. After 50 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 2 times. To cancel the ALARM operation, refer to the switching condition of No. 12 in the table above.

NOTE:

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

PRE-RESET Phase

The PRE-RESET phase is the transient state between each phase and DISARMED phase. If only the condition of hood or back door is not satisfied, the system switches to the PRE-RESET phase. Then, when any condition is changed, the system switches to the DISARMED phase or PRE-ARMED phase.

PANIC ALARM

The panic alarm function activates horns and headlamps intermittently when the owner presses the PANIC ALARM button of Intelligent Key outside the vehicle while the ignition switch is OFF.
In the same way as the Intelligent Key, the panic alarm can be activated and stopped by operating a cellular phone using the Telematics system function. For details, Refer to System Description .
When BCM receives panic alarm signal from Intelligent Key or TCU, BCM transmits "Theft Warning Horn Request" signal and "High Beam Request" signal intermittently to IPDM E/R via CAN communication. To prevent the activation due to mis-operation of Intelligent Key by owner, the panic alarm function is activated when BCM receives the signal for 0.4 - 0.6 seconds.
Panic alarm operation is maintained for 25 seconds.
Panic alarm operation is cancelled when BCM receives one of the following signals.
- LOCK button of Intelligent Key: ON
- UNLOCK button of Intelligent Key: ON
- PANIC ALARM button of Intelligent Key: Long pressed
- Any door request switch: ON
- When BCM receive panic alarm signal from TCU via CAN communication.