System Description
INTELLIGENT KEY SYSTEM
System Description
- The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/unlock function), open the trunk (trunk open function), and start the engine (engine start function) by carrying around the Intelligent Key (without some key operation), which operates based on the results of electronic ID verification using two-way communications between the Intelligent Key and the vehicle (Intelligent Key unit).
CAUTION:
The driver should always carry the Intelligent Key
- Operation of the remote control buttons on the Intelligent Key also provides the same functions as the remote control entry system (Remote keyless entry functions).
- If an action that does not meet the operating conditions of the Intelligent Key system is taken, the chime
(inside vehicle) goes off to inform the driver (Warning chime functions).
- When a door lock is locked or unlocked with request switch or remote control button operation, the hazard lamps flash and the Intelligent Key warning buzzer (front of vehicle) sounds (Hazard and horn reminder function).
- Even if the Intelligent Key battery is completely discharged, the door locks can be locked and unlocked and the engine started with the mechanical key built into the Intelligent Key.
- The settings for each function can be changed with the CONSULT-III.
- If an Intelligent Key is lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can be registered.
- It has been made possible to diagnose the system and register an Intelligent Key with the CONSULT-III.
DOOR LOCK/UNLOCK/TRUNK OPEN FUNCTION
Only when pressing the request switch, it is possible to lock and unlock the door and open the trunk by carrying around the Intelligent Key (without some key operation).
System Diagram
Operation Description
- When the Intelligent Key unit detects that each request switch is pressed, it starts the outside antenna corresponding to the pressed request switch and sends the request signal to the Intelligent Key. And then, make sure that the Intelligent Key is near the door or the trunk.
- If the Intelligent Key is within the outside antenna detection area, it receives the request signal and sends the key ID signal to the Intelligent Key unit.
- Intelligent Key receives the key ID signal and compares it with the registered key ID.
- If the key ID check result is OK, the Intelligent Key unit sends the door lock/unlock or trunk open request signal to BCM (Body control module) via CAN communication line.
- Intelligent Key unit sends the door lock/unlock signal and sounds Intelligent Key warning buzzer (front of vehicle) warning (lock: 2 times, unlock: 1 time, trunk open: 4 times) at the same time.
- When BCM receives the door lock/unlock signal, it operates door lock actuator and flashes the hazard lamp
(lock: 2 times, unlock: 1 time) at the same time as an operation check.
- When BCM receives the trunk open request signal, it operates the trunk lid opener actuator and opens the trunk.
Operation Condition
If the following conditions are not satisfied, door lock/unlock or trunk open operations will not response even if the request switch is operated.
Outside Key Antenna Detection Area
The outside key antenna detection area of door lock/unlock function is in the range of approximately 80 cm
(31.50 in) surrounding the driver and passenger door handles. The outside key antenna detection area of trunk open function is in the range of approximately 80 cm (31.50 in) surrounding Trunk opener request switch. However, this operating range depends on the ambient conditions.
Key Reminder Function
Key reminder functions have the following 2 functions.
CAUTION:
- The above function operates when the Intelligent Key is inside the vehicle. However, there may be times when the Intelligent Key cannot be detected, and this function will not operate when the Intelligent Key is on the instrument panel, rear parcel shelf, or in the glove box. Also, this system sometimes does not operate if the Intelligent Key is in the door pocket of an open door.
- While the key reminder function is operated when the trunk is open/closed and the chime sounds, if the following operations are performed, the key reminder function is cleared and chime sounds are stopped.
- Remote control door lock button operation of Intelligent Key
- Remote control door unlock button operation of Intelligent Key
- When the trunk is closed, the Intelligent Key is not inside the vehicle
- When any door is open
Selective Unlock Function
When a LOCK signal is sent from front door request switch LH or RH, all doors will be locked.
When an UNLOCK signal is sent from front door request switch LH or RH once, that door will be unlocked.
Then, if an UNLOCK signal is sent from the same front door request switch again within 1 minute, all other doors will be unlocked.
Hazard and Horn Reminder
When doors are locked or unlocked by a door request switch, Intelligent Key unit sends hazard request signal to BCM via CAN communication line. BCM flashes hazard warning lamps as a reminder.
Intelligent Key unit sends a chirp signal to the Intelligent Key warning buzzer (front of vehicle) as a reminder.
The hazard and buzzer reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).
Hazard and buzzer reminders do not operate if any door switch is ON (OPEN door) and ignition switch is ON.
How to change hazard and horn reminder mode
With CONSULT-III
Hazard and horn reminder can be changed using "HAZARD ANSWER BACK", "ANSWER BACK WITH I-KEY
LOCK" and "ANSWER BACK WITH I-KEY UNLOCK" mode in "WORK SUPPORT". CONSULT-III Application Item.
Room Lamp Operation
When the following conditions are met:
- Condition of interior lamp switch is in DOOR position
- Door switch is OFF (when all the doors are closed)
Intelligent Key system turns on interior lamp (for 30 seconds) by receiving UNLOCK signal from a door request switch. For detailed description, refer to "Room Lamp Operation".
List of Operation Related Parts
Parts marked with � are the parts related to operation.
REMOTE KEYLESS ENTRY FUNCTIONS
Door Lock/Unlock Function
The Intelligent Key has the same functions as the remote control entry system. Therefore, it can be used in the same manner as the remote control transmitter by operating the door lock/unlock button and trunk open button.
System Diagram
Door Lock/Unlock Function
- When door lock/unlock button of the Intelligent Key is pressed, lock signal or unlock signal is sent from Intelligent Key to Intelligent Key unit.
- Intelligent Key unit sends the door lock/unlock request signal to BCM via CAN communication line.
- When BCM receives the door lock/unlock signal, it operates door lock actuator and flashes the hazard lamp
(lock: 2 times, unlock: 1 time) at the same time as an operation check.
Trunk Open Function
- When pressing the trunk button of the Intelligent Key, the trunk open signal is sent from the Intelligent Key to the Intelligent Key unit.
- Intelligent Key unit sends trunk open request signal to BCM via CAN communication line and sounds Intelligent Key warning buzzer (front of vehicle) 4 times at the same time.
- When BCM receives the trunk open request signal, it operates the trunk lid opener actuator and opens the trunk.
Operation Condition
Selective Unlock Function
When a LOCK signal is sent from remote control of Intelligent Key, all doors will be locked.
When an UNLOCK signal is sent from remote control of Intelligent Key once, driver's door will be unlocked.
Then, if an UNLOCK signal is sent from remote control of Intelligent Key again within 1 minute, all other door will be unlocked.
Hazard and Horn Reminder
When doors are locked or unlocked by remote control of Intelligent Key, Intelligent Key unit sends hazard and horn request signal to BCM via CAN communication line.
BCM flashes hazard warning lamps as a reminder and sends horn chirp signal to IPDM E/R. IPDM E/R sounds horn as a reminder.
The hazard and horn reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).
Hazard and horn reminders do not operate if any door switch is ON (door is OPEN) and ignition switch is ON.
How to change hazard and horn reminder mode
With CONSULT-III
Hazard and horn reminder can be changed using "HORN WITH KEYLESS LOCK" and "HAZARD ANSWER
BACK" mode in "WORK SUPPORT". CONSULT-III Application Item .
Without CONSULT-III
Refer to Owner's Manual for instructions.
Auto Door Lock Function
When all doors are locked, ignition knob switch is OFF (when ignition switch is not pressed) and key switch is
OFF (when mechanical key is not inserted in key cylinder), doors are unlocked with remote control of Intelligent Key. When Intelligent Key unit does not receive the following signals within 1 minute, all doors are locked.
- Door switch is ON (door is opened)
- Door is locked
- Ignition knob switch is ON (ignition switch is pressed)
- Key switch is ON (mechanical key is inserted in key cylinder)
Auto door lock mode can be changed by "AUTO RELOCK TIMER" mode in "WORK SUPPORT". CONSULT-III Application Item .
Panic Alarm Function
When ignition knob switch is OFF (when ignition switch is not pressed) and key switch is OFF (when mechanical key is not inserted in key cylinder), Intelligent Key unit receives PANIC ALARM signal from remote control of Intelligent Key.
Intelligent Key unit sends alarm request signal to BCM via CAN communication line.
BCM turns on and off headlamp intermittently and sends theft warning horn signal to IPDM E/R. Then, IPDM
E/R turns on and off horn intermittently.
The headlamp flashes and the horn sounds intermittently.
The alarm automatically turns off:
- After 25 seconds
- When Intelligent Key unit receives any signal from remote control of Intelligent Key
- When a door request switch is pressed (Intelligent Key is outside vehicle)
Panic alarm function mode can be changed by "PANIC ALARM DELAY" mode in "WORK SUPPORT". Refer to CONSULT-III Application Item.
Room Lamp Illumination Operation
When the following conditions are met:
- Condition of interior lamp switch is in DOOR position
- Door switch OFF (when all the doors are closed)
Intelligent Key system turns on interior lamp (for 30 seconds) by receiving UNLOCK signal from remote control of Intelligent Key. For detailed description, refer to "Room Lamp Operation".
List of Operation Related Parts
Parts marked with � are the parts related to operation.
ENGINE START FUNCTION
When the registered Intelligent Key is carried, the engine can be started without inserting the key.
When ignition knob switch is ON (press ignition switch), Intelligent Key unit searches Intelligent Key in the vehicle using inside key antenna.
When Intelligent Key is inside the vehicle, it performs the following operation.
- Illuminate green "KEY" warning lamp in combination meter.
- Released steering lock and ignition switch can be turned from OFF to ACC, ON or START position.
NOTE:
If Intelligent Key is not registered, "KEY" warning lamp in combination meter illuminates red.
- Intelligent Key sends engine start signal via CAN communication line.
When ignition switch turns to START position, BCM sends starter request signal to IPDM E/R. Then, engine starts.
Even if Intelligent Key battery runs down, Intelligent Key unit can start engine with mechanical key built into
Intelligent Key. For details, NATS (Nissan Anti-Theft System) System Description.
All of the originally supplied Intelligent Key IDs have been registered in Intelligent Key system.
If requested by the vehicle owner, a maximum of four Intelligent Key IDs can be registered into the Intelligent
Key system components.
List of Operation Related Parts
Parts marked with � are the parts related to operation.
WARNING CHIME/BUZZER/LAMPS FUNCTION
Operation Description
The following warning chime (combination meter), intelligent key warning buzzer (front of vehicle), and warning lamps "KEY" and "P-SHIFT" (combination meter) are given to the user as warning information while using the intelligent key system.
- Ignition switch warning chime
- Ignition key warning chime
- OFF position warning chime
- OFF position warning chime (after door closed)
- Take away warning chime
- Take away warning chime (from window)
- Door lock operation warning chime
- Intelligent key low battery warning
- P position warning
NOTE:
For key-in-ignition warning chime related issues only, Warning Chime.
Operation Condition
List of Operation Related Parts
Parts marked with � are the parts related to operation.
CHANGE SETTINGS FUNCTION
The settings for each function can be changed with the CONSULT-III.
Changing Settings Using CONSULT-III
The settings for the Intelligent Key system functions can be changed using CONSULT-III (WORK SUPPORT). CONSULT-III Application Item .
NOTE:
Once a function setting is changed, it will remain effective even if the battery is disconnected.
INTELLIGENT KEY REGISTRATION
Intelligent Key-ID registration is performed using the CONSULT-III.
CAUTION:
- After a new Intelligent Key-ID is registered, be sure to check the function.
- When registering an additional Intelligent Key-ID, take any Intelligent Keys already registered and
Intelligent Keys for any other vehicles out of the vehicle before starting.
CONSULT-III can be used to check and delete Intelligent Key-IDs.
For further information, see the CONSULT-III Operation Manual NATS.
STEERING LOCK SOLENOID REGISTRATION
Steering Lock Solenoid ID Registration
CAUTION:
- The method for registering a steering lock solenoid ID depends on the status of the steering lock solenoid and Intelligent Key unit (new or old unit).
- After registration is completed, press ignition switch with an Intelligent Key in the vehicle so that it can be turned, and confirm that it cannot be turned even when ignition switch is pressed without an
Intelligent Key in the vehicle.
For further information, see the CONSULT-III Operation Manual NATS-IVIS/NVIS.