System Description

SYSTEM DIAGRAM

Courtesy of NISSAN NORTH AMERICA, INC.

Component	Function
Intelligent Key	Operates based on the results of electronic ID verification using two-way communication between the Intelligent Key and the vehicle (Intelligent Key unit).
Each door request switch	Detects door lock/unlock operation.
Push-button ignition switch	Refer to Push-Button Ignition Switch .
Each door switch	Detects door open/close condition.
Combination switch	Inputs the each switch condition signal to BCM.
Front power window motor LH	Transmits front power window open/close signal to BCM via LIN communication.
Intelligent Key unit	Transmits push-button ignition switch status signal and door lock/unlock request signal to BCM via CAN communication.
ABS actuator and electric unit (control unit)	Transmits vehicle speed signal to the BCM via CAN communication.
TCU	Transmits auto ACC request signal to BCM via CAN communication.
BCM	BCM operates the auto ACC function based on each signal state.
Accessory relay	Controlled by the BCM and turns ON/OFF the battery power supply to each part.
Audio/Navigation	Transmits auto ACC request signal to BCM via CAN communication. Auto ACC status signal receives from BCM via CAN communication.

Signal transmission function list

Signal name	Input	Output	Description
Door request switch signal	Each door request switch	Intelligent Key unit	Transmits the door request switch signal to the Intelligent Key unit.
Push-button ignition switch signal	Push-button ignition switch	Intelligent Key unit	Transmits the push-button ignition switch signal to the Intelligent Key unit.
Door switch signal	Each door switch	BCM	Transmits the door switch signal to the BCM.
Combination switch signal	Combination switch	BCM	Transmits the combination switch signal to the BCM.
Front power window open/close signal	Front power window motor LH	BCM (LIN)	Transmits the front power window open/close signal via LIN communication.
Push-button ignition switch status signal	Intelligent Key unit	BCM (CAN)	Transmits the push-button ignition switch status signal via CAN communication.
Door lock/unlock request signal	Intelligent Key unit	BCM (CAN)	Transmits the door lock/unlock request signal via CAN communication.
Auto ACC request signal	Audio/Navigation TCU	BCM (CAN)	Transmits the auto ACC request signal via CAN communication.
Auto ACC status signal	BCM	Audio/Navigation (CAN) TCU (CAN)	Transmits the auto ACC status signal via CAN communication.
Vehicle speed signal	ABS actuator and electric unit (control unit)	BCM (CAN)	Transmits the vehicle speed signal via CAN communication.

SYSTEM DESCRIPTION

In conventional vehicles, power is supplied to the accessories of the vehicle after the push-button ignition switch is placed to ACC. The AUTO ACC function is a function that bypasses the push-button ignition switch ACC mode and automatically distributes accessory power supply to each switch and unit based on door unlock operation, etc. using the Intelligent Key.

OPERATION FLOW

Courtesy of NISSAN NORTH AMERICA, INC.

Push-button ignition switch ON state

In this status the push-button ignition switch is operated and placed ON.

Audio/Navigation use possible state

In this status the audio/navigation, and each switch and unit that is activated by the accessory power supply can be operated.
When 10 minutes pass after conditions are satisfied while audio/navigation are not operated, audio/navigation turns OFF.

Audio/Navigation preparation state

In this status audio/navigation are stopped, but the switches and units other than those for audio/navigation that can operate by using the accessory power supply are available until the accessory power supply turns OFF.
When audio/navigation is operated within 1 minutes after conditions are satisfied, operation time is extended for 10 minutes. Audio/navigation can be operated for a maximum of 30 minutes after the status is satisfied.

Function OFF state

In this status the AUTO ACC function stops and power to the accessories is not supplied.

Function status	Shifting condition	Accessory power supply
Shifting from "Function OFF state" to "Push-button ignition switch ON state"	Any of the following conditions are satisfied: Push-button ignition switch ON from OFF. Operate push-button ignition switch and start the engine. Operate REMOTE ENGINE START button of Intelligent Key and start the engine.	OFF -> ON
Shifting from "Audio/Navigation preparation state" to "Push-button ignition switch ON state"		ON
Shifting from "Audio/Navigation use possible state" to "Push-button ignition switch ON state"		ON
Shifting from "Function OFF state" to "Audio/Navigation preparation state"	Any of the following conditions are satisfied: Each door is opened or closed. Close all doors and back door, and lock all doors with the Intelligent Key or door request switch. Operate either the door request switch or the unlock button of the Intelligent Key to unlock the door. Operate lighting switch and turn ON the tail lamp.	OFF -> ON
Shifting from "Audio/Navigation preparation state" to "Audio/Navigation use possible state"	Operate audio/navigation.	ON
Shifting from "Push-button ignition switch ON state" to "Audio/Navigation use possible state"	Push-button ignition switch OFF from ON while front door LH is closed with vehicle speed is less than 2 MPH (3 km/h).	ON
Shifting from "Push-button ignition switch ON state" to "Audio/Navigation preparation state"	Push-button ignition switch OFF from ON while front door LH is open with vehicle speed is less than 2 MPH (3 km/h).	ON
Shifting from "Audio/Navigation use possible state" to "Audio/Navigation preparation state"	Any of the following conditions are satisfied: Front door LH is opened. Close all doors and back door, and lock all doors with the Intelligent Key or door request switch. 10 minutes pass from "Audio/Navigation use possible state".	ON
Shifting from "Audio/Navigation use possible state" to "Function OFF state"	30 minutes pass from "Audio/Navigation use possible state".	ON -> OFF
Shifting from "Audio/Navigation preparation state" to "Function OFF state"	1 minutes or 3 minutes pass from "Audio/Navigation preparation state".	ON -> OFF
Shifting from "Audio/Navigation use possible state" time extension (1 minute)	Any of the following conditions are satisfied: Each door is opened or closed. Close all doors and back door, and lock all doors with the Intelligent Key or door request switch. Operate either the door request switch or the unlock button of the Intelligent Key to unlock the door. Operate lighting switch and turn ON the tail lamp. Operate power window switch and open/close the power window.	ON
Shifting from "Push-button ignition switch ON state" (in status of emergency stop) to "Audio/Navigation use possible state"	Vehicle speed is less than 2 MPH (3 km/h) and except front door LH is opened.	ON
Shifting from "Push-button ignition switch ON state" (in status of emergency stop) to "Audio/Navigation preparation state"	Vehicle speed is less than 2 MPH (3 km/h) and front door LH is opened.	ON
Shifting from "Push-button ignition switch ON state" (in status of temporarily disabling the ignition battery saver) to "Audio/Navigation use possible state"	Press and hold the push-button ignition switch continuously for 3 seconds or more when all of the following conditions are satisfied: Shift selector: Except P or N position Brake pedal: Not depressed Front door LH: Close	ON
Shifting from "Push-button ignition switch ON state" (in status of temporarily disabling the ignition battery save) to "Audio/Navigation preparation state"	Press and hold the push-button ignition switch continuously for 3 seconds or more when all of the following conditions are satisfied: Shift selector: Except P or N position Brake pedal: Not depressed Front door LH: Open	ON