2003 NISSAN TEANA key

BL-70
INTELLIGENT KEY SYSTEM

System DescriptionBIS000WZ

The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock
function) and start the engine (engine start function) by carrying around the Intelligent Key, which operates
based on the results of electrical key-ID verification using two-way communications between the Intelli-
gent Key and the vehicle

Operation of the remote control buttons on the Intelligent Key also provides the same functions as the
remote keyless entry system. (Remote keyless entry functions)

As an ignition key warning function, when a door lock is locked or unlocked with request switch or remote
controller button operation, the hazard lamps flash and the Intelligent Key warning buzzer sounds.

Even if the Intelligent Key battery runs down, the door locks can be locked and unlocked and the engine
started with the mechanical key built into the Intelligent Key.

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, change the function setting and register an Intelligent
Key with the CONSULT-II.
DOOR LOCK/UNLOCK, TRUNK OPEN FUNCTION
Operation Description

When the driver door, passenger door, or trunk open request switch is pressed, Intelligent Key unit sends
a request signal from the outside key antenna corresponding to the pressed request switch, key-ID verifi-
cation is performed using two-way communication with Intelligent Key, and if ID is successfully verified, a
door lock/unlock request signal is sent to BCM using CAN communication to lock/unlock the door lock.

When door is locking, door is unlocked, when door is unlocking, door is locked.

When door lock is locked/unlocked by door request switch operation, hazard lamps flash and Intelligent
Key warning buzzer sounds.

With the locking operation of door request switch, door lock actuators of all door are locked.

When trunk open request switch is pushed, trunk lid is opened.
Operation Condition
Auto Door Lock Function
After the door request switch in the driver or passenger door is operated and the vehicle door locks are
unlocked, all the doors are automatically locked unless the mechanical key is inserted into the ignition knob,
the ignition knob is pressed, any door request switch is pressed, any one of the doors is opened, or an Intelli-
gent Key remote control button is operated within 2 minutes.
Hazard Reminder Function
The hazard lamps are flashed when the door lock is locked or unlocked by door request switch operation.
When ignition switch ON or any door is opened, key reminder function is not operate.
Request switch operation Operating conditions
Request switch (Driver side) When all the conditions below are met

All doors are closed (for lock operation)

Remove mechanical key from ignition key cylinder (key switch: OFF)

Ignition knob is not press (ignition knob switch: OFF)

The Intelligent Key is in the outside key antenna detection area for the door for which
the door request switch was operated. Request switch (passenger side)
Request switch (trunk lid)When all the conditions below are met

The Intelligent Key is in the antenna detection area for the outside key antenna (rear
bumper).

When the Intelligent Key is detection for the Inside Key antenna, but another Intelli-
gent Key is detected for the outside key antenna.
Vehicle operation Hazard lamp
Door unlock operation Twice
Door lock operationOnce

INTELLIGENT KEY SYSTEM
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Intelligent Key Lock-in Prevention Function
When Intelligent Key is in vehicle, a door is open, and doors are locked using door lock and unlock switch,
driver door lock knob, Intelligent Key unit sends door unlock request signal to BCM via CAN communication to
unlock all doors to prevent Intelligent Key from becoming locked in vehicle.
When Intelligent Key is in trunk room, all doors are lock and trunk lid is closed, Intelligent Key unit sends trunk
open signal to BCM. Then BCM open trunk lid and warning buzzer sounds for 10 seconds.
CAUTION:
The above function operates when the Intelligent Key is inside the vehicle. However, there may be
times when Intelligent Key cannot be detected and this function will not operate when Intelligent Key
is on the instrument panel, rear parcel shelf, or in the glove box. Also, this system some times does
not operate if the Intelligent Key is in the door pocket for the open door.
List of Operation Related Parts
Parts marked with × are the parts related to operation.
REMOTE KEYLESS ENTRY FUNCTIONS
Door Lock/Unlock Function

Operating a remote controller button on the Intelligent Key sends the Intelligent Key-ID to the Intelligent
Key unit. Intelligent Key unit conducts a verification of the received key-ID, and if the verification is
accepted, a door lock or door unlock request signal is sent to BCM via CAN communication to lock/unlock
the door lock.

When door lock/unlock is performed using Intelligent Key remote controller button operation, operation
confirmation is conducted by making hazard lamps flash and Intelligent Key warning buzzer sound.
Trunk Open Function

Operating a remote controller button on the Intelligent Key sends the Intelligent Key-ID to the Intelligent
Key unit.

Intelligent Key unit conducts a verification of the received key-ID, and if the verification is accepted, a
trunk open request signal is sent to BCM via CAN communication trunk lid is opened.
Operation Condition
Door lock/trunk open function
Intelligent Key
Key switch
Ignition knob switch
Door unlock sensor
Trunk room lamp switch
Door request switch
Trunk opener request switch
Door lock actuator
Trunk lid opener actuator
Inside key antenna
Outside key antenna (Driver, Passenger)
Outside key antenna (rear bumper)
Intelligent Key unit
CAN communication system
BCM
Combination meter
Hazard warning lamp
Door lock function by the request switch××××××××××××
Door lock function by the mechanical key××
Trunk open function by the trunk opener switch× × × ×× ××××
Hazard reminder function×××××
Remote controller button operation Operating condition
Lock

All doors are closed. (for lock operation)

Remove mechanical key from ignition key cylinder (key switch: OFF)

Ignition knob is not press (ignition knob switch: OFF)

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INTELLIGENT KEY SYSTEM

Hazard Reminder Function
The hazard lamps are flashed when the door lock is locked or unlocked by remote controller button.
When ignition switch ON or any door is opened, key reminder function is not operate.
List of Operation Related Parts
Parts marked with × are the parts related to operation.
ENGINE START FUNCTION
Operation Description

When ignition knob is pressed, Intelligent Key unit sends request signal from inside key antenna, key-ID
verification is performed with Intelligent Key using two-way communication, and if verification is success-
ful, an ignition rotation prohibition latch release signal is sent to steering lock unit. Steering lock unit
releases ignition knob rotation prohibition latch. (Ignition knob can now be turned.)

When it becomes possible to rotate the ignition knob, “KEY” warning lamp in combination meter lights up
green to notify driver that ignition knob can be turned.
NOTE:
When it becomes impossible to rotate the ignition knob, “KEY” warning lamp in combination meter lights
up red.

When key-ID verification is successful, Intelligent Key unit uses CAN communication to send engine start
permission signal to BCM.

When BCM receives engine start permission signal, it uses CAN communication to sent starter request
signal to IPDM E/R so that the engine will start when ignition knob is rotated to START position.
Operation Range
Engine can be started when Intelligent Key is in the vehicle. However, sometimes engine might not start when
Intelligent Key is on instrument panel, rear parcel shelf, trunk room or in glove box.
Unlock
Remove mechanical key from ignition key cylinder (key switch: OFF)

Ignition knob is not press (ignition knob switch: OFF)
Trunk open

Remove mechanical key from ignition key cylinder (key switch: OFF)

Ignition knob is not press (ignition knob switch: OFF)

When trunk button pressed more than 0.5 seconds Remote controller button operation Operating condition
Vehicle operation Hazard lamp
Door unlocking operation Twice
Door locking operation Once
Remote keyless entry functions
Intelligent Key
Key switch
Ignition knob switch
Door unlock sensor
Door switch
Trunk room lamp switch
Door lock actuator
Trunk lid opener actuator
Intelligent Key unit
CAN communication system
BCM
Combination meter
Hazard warning lamp
Door lock function by the remote control button××××× × ×××
Trunk open function by the remote control button××× × ××××
Hazard reminder function (Door lock)×××××

INTELLIGENT KEY SYSTEM
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Active Check Function
Confirm whether or not ignition knob can be rotated by checking the color of warning lamp in combination
meter.
List of Operation Related Parts
Parts marked with × are the parts related to operation.
WARNING AND ALARM FUNCTION
Operation Description
The warnings and alarms are as follows and are given to the user as warning information and warnings using
combinations of Intelligent Key warning buzzer (in driver door and passenger door), inside vehicle buzzer (in
combination meter), and warning lamps “KEY” and “LOCK.”

Ignition switch return forgotten warning
With the ignition in OFF or ACC position, if the driver door is opened, this warning is issued.

Key left in ignition warning (when mechanical key used)
With the mechanical key in the ignition knob and the ignition switch is in the OFF, ACC, or LOCK position,
if the driver door is opened, this warning is issued.

Ignition switch OFF position warning (for inside car: when door closed)
This warning is issued when the user forgets to return the ignition knob to the LOCK position.

Ignition switch OFF position warning (for outside car: when door opened/closed)
This warning is issued when the user leaves the car without returning the ignition knob to the LOCK posi-
tion.

Warning for removal of Intelligent Key to outside the car (when door open/closed)
This warning is issued if the Intelligent Key is taken outside the car while the engine is running.

Warning for removal of Intelligent Key to outside the car (from window)
This warning is issued if the Intelligent Key is taken outside the car through a window while the engine is
running.

Door lock non-operation warning
This warning is issued if the door lock (lock) operation by a door request switch is not effected.

Intelligent Key low battery warning
This warning is issued when it is detected that the battery in the Intelligent Key has been used up.
Condition Operation
Ignition knob rotation possible “KEY” warning lamp in combination meter is lit up green.
Ignition knob rotation not possible “KEY” warning lamp in combination meter is lit up red.
Engine start functions
Intelligent Key
Key switch
Ignition knob switch
Inside key antenna
Intelligent Key unit
CAN communication system
BCM
Combination meter
IPDM E/R
NATS antenna amp.
Steering lock unit
Engine start function by the Intelligent Key××××××××× ×
Engine start function by the mechanical key× ×××××××
Active check function× ×××× ×

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INTELLIGENT KEY SYSTEM

Operation Condition
Warning and alarm names Operating conditions (when all the conditions below are met)
Ignition knob return forgotten warn-
ing

The ignition switch is in the ACC, OFF, or LOCK position (knob pressed)

The driver door is opened.
Ignition key warning
(When mechanical key used)

The mechanical key is inserted in the ignition knob (key switch: ON)

The ignition switch is in the ACC, OFF, or LOCK position.

The driver door is opened
Ignition knob OFF position warning
(for inside car: when door closed)

The ignition switch is in the OFF or LOCK position (knob pressed)

In the above state, when the ignition switch is changed from ON to OFF and 1 second
passes. (However, this warning is not issued if the mechanical key is inserted in the igni-
tion knob, ignition knob is turned except OFF position or ignition or ignition knob is not
pushed.)
Ignition knob OFF position warning
(for outside car: when door opened/
closed)

The ignition switch is in the OFF or LOCK position (knob pressed)

In the above state, when the ignition switch is changed from ON to OFF and 1 second
passes. (However, this warning is not issued if the mechanical key is inserted in the igni-
tion knob, ignition knob is turned except OFF position or ignition or ignition knob is not
pushed.)

Driver door open → closed
Warning for take out of Intelligent
Key to outside the car (when door
open/closed)
When Any of the Following Conditions Are Met

When the ignition knob is pressed in so that it can be rotated (or has been rotated), if any
of the doors has been opened, when all the doors are closed, the Intelligent Key unit
compares the key-ID with that of the Intelligent Key using the inside key antenna, if the
results of the comparison are NG (the Intelligent Key is not found)

When the ignition knob is pressed in so that it can be rotated (or has been rotated), if any
of the doors is open, the Intelligent Key unit compares the key-ID with that of the Intelli-
gent Key every 5 seconds using the inside key antenna, if the results of the comparison
are NG (the Intelligent Key is not found)
NOTE:
However, this warning is not issued if the mechanical key is inserted in the ignition knob.
Warning for take out of Intelligent
Key to outside the car (from win-
dow)When the ignition knob is pressed in so that it can be rotated (or has been rotated), if the
vehicle speed is less than 5 km per hour, the Intelligent Key unit compares the key-ID with
that of the Intelligent Key every 30 seconds using the inside key antenna, if the results of
the comparison are NG (the Intelligent Key is not found)
Note: The factory setting for this function is OFF.
Door lock non-operation warningWhen any of the following conditions are met

When the Intelligent Key is inside the car and the ignition knob is not pressed, when an
attempt is made to lock a door lock with a door request switch
NOTE:
This warning is issued even if the Intelligent Key is not in the out side key antenna detec-
tion area corresponding to the door request switch was operated.

When the ignition knob is pressed, when an attempt is made to lock a door lock with a
door request switch
NOTE:
This warning is only issued if the Intelligent Key is in the out side key antenna detection
area corresponding to the door request switch was operated.

When any of the doors is open, when an attempt is made to lock a door lock with a door
request switch
NOTE:
This warning is only issued if the Intelligent Key is in the out side key antenna detection
area corresponding to the door request switch was operated.
Intelligent Key low battery pre-
warningThis warning is issued when it is detected that the battery in the Intelligent Key has been
used up.

INTELLIGENT KEY SYSTEM
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Warning Procedure
List of Operation Related Parts
Parts marked with × are the parts related to operation.
Warning and alarm namesBuzzer Warning lamp
Inside car Outside car “KEY”
Ignition switch return forgotten warn-
ingBuzzer: Continuous — —
Ignition key warning
(When mechanical key used)Buzzer: Continuous — —
Ignition switch OFF position warning
(for inside car: when door closed)Buzzer: Twice — —
Ignition switch OFF position warning
(for outside car: when door opened/
closed)— Buzzer (3 times) —
Warning for removal of Intelligent Key
to outside the car (when door open/
closed)— Buzzer (3 seconds) Red illuminate
Warning for removal of Intelligent Key
to outside the car (from window)Buzzer (3 seconds) — Red illuminate
Door lock non-operation warning — Buzzer (2 seconds) —
Intelligent Key low battery pre-warning — —Green illuminate
(30 seconds after ignition switch
comes ON)
Warning and alarm functions
Intelligent Key
Key switch
Ignition knob switch
Intelligent Key unit ignition switch ACC position input signal
Intelligent Key unit ignition switch ON position input signal
Door switch
Door request switch
Door lock actuator
Inside key antenna
Outside key antenna (Driver, Passenger)
Outside key antenna (rear bumper)
Intelligent Key warning buzzer
Intelligent Key unit
CAN communication system
BCM
Combination meter
Ignition knob return forgotten warning (When Intelli-
gent Key used)××× ××××
Ignition key warning
(When mechanical key used)××× ××××
Ignition knob OFF position warning
(for outside car: when door closed)××× × ××××
Ignition knob OFF position warning
(for outside car: when door opened/closed)× ××× × ××××
Warning or take out of Intelligent Key to outside the
car
(when door open/closed)× × × × ×××××
Warning for take out of Intelligent Key to outside the
car (from window)× × × × ×××××

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INTELLIGENT KEY SYSTEM

CHANGE SETTINGS FUNCTION
The settings for each function can be changed with the CONSULT-II or Intelligent Key operation.
Changing Settings With the Intelligent Key
Intelligent Key remote controller button and door request switch operations change the engine startup function
settings (startup enabled/disabled) for each Intelligent Key independently.
Settings Change Procedure
1. With the ignition switch is in the LOCK position (ignition knob not pressed), hold down both the LOCK and
UNLOCK remote control buttons on the Intelligent Key at the same time for at least 10 seconds (The yard-
stick is that the Intelligent Key LED flashes 20 times.)
2. Within 5 seconds of releasing the Intelligent Key remote controller buttons, press the driver door request
switch.
3. The KEY warning lamp in combination meter lights up for 3 seconds (engine starting enabled → starting
disabled: lights up red, engine starting disabled → flashes green). This completes the settings change.
Changing Settings Using CONSULT-II
The settings for the Intelligent Key system functions can be changed using CONSULT-II (WORK SUPPORT).
Refer to BL-94, "
WORK SUPPORT" .
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-II. Up to 4 can be registered.
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-II can be used to check and delete Intelligent Key-IDs.
For future information, see the CONSULT-II Operation Manual NATS.
Door lock non-operation warning× × ××××××××××
Intelligent Key low battery warning×××××× Warning and alarm functions
Intelligent Key
Key switch
Ignition knob switch
Intelligent Key unit ignition switch ACC position input signal
Intelligent Key unit ignition switch ON position input signal
Door switch
Door request switch
Door lock actuator
Inside key antenna
Outside key antenna (Driver, Passenger)
Outside key antenna (rear bumper)
Intelligent Key warning buzzer
Intelligent Key unit
CAN communication system
BCM
Combination meter

INTELLIGENT KEY SYSTEM
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STEERING LOCK UNIT REGISTRATION
Steering Lock Unit ID Registration
CAUTION:

The method for registering a steering lock unit ID depends on the status of the steering lock unit
and Intelligent Key unit (new or old unit).

After registration is completed, press ignition knob with a portable unit in the vehicle so that it can
be rotated, and confirm that it cannot be rotated even when ignition switch is pressed without a
portable unit in the vehicle.
For future information, see the CONSULT-II Operation Manual NATS.
CAN Communication System DescriptionBIS000X0
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitBIS000X1
Refer to LAN-49, "CAN System Specification Chart" .