Nissan Ariya: System

• Intelligent Key System/ready Set Function
• Nissan Vehicle Immobilizer System
• Vehicle Security System

Vehicle Security System

System Description

SYSTEM DIAGRAM

BCM INPUT/OUTPUT SIGNAL CHART

Input Signal Item

Output Signal Item

INTELLIGENT KEY UNIT INPUT/OUTPUT SIGNAL CHART

Input Signal Item

Output Signal Item

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.

Operation Flow

No.	System state	Switching condition
	DISARMED to PRE-ARMED	When all conditions of A and one condition of B is satisfied.	A	B
			Power switch: OFF All doors: Closed	All doors are locked by: LOCK button of Intelligent Key Walk away lock function One touch sensor Door request switch
	PRE-ARMED to ARMED	When none of the following conditions are satisfied for 30 seconds.	Power switch: ON UNLOCK button of Intelligent Key: ON One touch sensor: Unlock Door request switch: Unlock Approach unlock: 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.	Power switch: ON UNLOCK button of Intelligent Key: ON One touch sensor: Unlock Door request switch: Unlock Approach unlock: 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, approach unlock/walk away lock function, one touch sensor or door request switch, Intelligent Key must be within the detection area of outside key antenna. For details: Refer to System Description.

• To open automatic back door by hands free sensor, 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 customer is inside or nearby the Nissan Ariya 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 customer can reset the setting due to a mis-operation. This phase switches to the ARMED phase when Nissan Ariya 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, Nissan Ariya 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 Nissan Ariya 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 Nissan Ariya 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.

PANIC ALARM

• The panic alarm function activates horns and headlamps intermittently when the customer presses the PANIC ALARM button of Intelligent Key outside the Nissan Ariya vehicle while the ignition switch is OFF.

• When BCM receives panic alarm signal from Intelligent Key, BCM transmits “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 customer, the panic alarm function is activated when BCM receives the signal for 0.4 - 0.6 seconds.

• Panic alarm operation is maintained for approximately 27 seconds.

• Panic alarm operation is canceled 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: Pressed

  • Any door request switch: ON

  • One touch sensor: ON

  • Approach unlock: ON

• Telematics system (horn & light) activates horns or horns and hazard warning lamp intermittently by cellular phone while the power switch is OFF.

• Telematics system (horn & light) is operated 3 times for a total duration of  approximately 15 seconds.

• Telematics system (horn & light) operation is canceled when power switch ON.

Circuit Diagram

Door Lock and Unlock SwitchEcu Diagnosis Information. Inverter (front), Inverter (rear), Bcm, Intelligent Key Unit