NISSAN VERSA 2006 Workshop Service Repair Manual

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INTELLIGENT KEY SYSTEM
Revision: June 20062007 Versa
System DescriptionEIS0091W

The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/
unlock 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 com-
munications between the Intelligent Key and the vehicle (Intelligent Key unit).

Vehicles equipped with a manual transmission include a key interlock solenoid located in the steering col-
umn to prevent accidental shut-off of the ignition switch and locking of the steering wheel during driving
condition when the vehicle is moving.
CAUTION:
The driver should always carry the Intelligent Key

Operation of the remote controller 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 buzzer
goes off to inform the driver. (Warning chime functions)

When a door lock is locked or unlocked with request switch or remote controller button operation, the haz-
ard lamps flash and the buzzer (outside vehicle) sounds (Hazard and buzzer 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-II.

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-II.

INTELLIGENT KEY SYSTEM
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DOOR LOCK/UNLOCK FUNCTION
Only when pressing the request switch, it is possible to lock and unlock the door by carrying around the Intelli-
gent 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 key antenna
and inside key 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 door.

If the Intelligent Key is within the outside key antenna detection area, it receives the request signal and
sends the key ID signal to the Intelligent Key unit.

Intelligent Key unit 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 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 (lock: 2
times, unlock: 1 time) at the same time.

When BCM receives the door lock/unlock signal, it operates door lock actuator and flashes the hazard
warning lamp (lock: 2 times, unlock: 1 time) at the same time as reminder.
LIIA2624E

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INTELLIGENT KEY SYSTEM
Revision: June 20062007 Versa
Operation Condition
If the following conditions are not satisfied, door lock/unlock operations are not performed even if the request
switch is operated.
*: Even with a registered Intelligent Key remaining inside the vehicle, door locks can be unlocked from outside of the vehicle with a spare
Intelligent Key as long as Key IDs are different.
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 request switch (driver side, passenger side and back door area).
Hazard and Buzzer Reminder
When all doors are locked or unlocked by each request switch, Intelligent Key unit sends hazard request sig-
nal to BCM via CAN communication line.
BCM flashes hazard warning lamps as a reminder and Intelligent Key unit sounds Intelligent Key warning
buzzer (driver door) as a reminder.
Operating function of hazard and buzzer reminder
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 out of ignition key cylinder), all doors are unlocked with each request switch.
When Intelligent Key unit does not receive the following signals within 30 seconds, all doors are locked.

Door switch is ON (door is opened)

Door lock signal from Intelligent Key button

Ignition knob switch is ON (ignition switch is pressed)

Key switch is ON (mechanical key is inserted in ignition key cylinder)
Auto door lock mode can be changed by “AUTO RELOCK TIMER” mode in “WORK SUPPORT”. Refer to BL-
11 3 , "WORK SUPPORT" .
Each request switch operation Operation condition Operation
Lock operation

All doors are closed

Intelligent Key is outside of the vehicle

Intelligent Key is within outside key antenna detection areaAll doors lock
Unlock Operation

All doors are closed

Intelligent Key is outside of the vehicle

Intelligent Key is within outside key antenna detection area*All doors unlock
Request switch operation Hazard warning lamp flashIntelligent Key warning buzzer
(driver door)
Unlock Once Once
Lock Twice Twice

INTELLIGENT KEY SYSTEM
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List of Operation Related Parts
Parts marked with × are the parts related to operation.
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.
Door lock open function
Intelligent Key
Key switch
Ignition knob switch
Door switch
Back door lock assembly (back door switch)
Request switch (driver, passenger, back)
Door lock actuator
Inside key antenna
Outside key antenna
Intelligent Key warning buzzer (driver door)
Intelligent Key unit
CAN communication system
BCM
Hazard warning lamp
Door lock/unlock function by request switch× ×××××× ×××
Door lock/unlock function by mechanical key××
Hazard and buzzer reminder function×××××
Auto door lock function×××× × ×××
Key reminder function Operation condition Operation
Door is open to closeRight after all doors are closed under the following conditions.

Intelligent Key is inside the vehicle

Any door is opened

All doors are locked by door lock and unlock switch or door
lock knob

All doors unlock operation

Sound Intelligent Key warn-
ing buzzer for 3 seconds

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INTELLIGENT KEY SYSTEM
Revision: June 20062007 Versa
List of Operation Related Parts
Parts marked with × are the parts related to operation
REMOTE KEYLESS ENTRY FUNCTIONS
The Intelligent Key has the same functions as the remote keyless entry system. Therefore, it can be used in
the same manner as the keyfob by operating the door lock/unlock 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.

Intelligent Key unit sends the door lock/unlock signal and sounds Intelligent Key warning buzzer (lock: 2
times, unlock: 1 time) at the same time.

When BCM receives the door lock/unlock signal, it operates door lock actuator and flashes the hazard
warning lamp (lock: 2 times, unlock: 1 time) at the same time as reminder.
Operation Condition
Hazard and Buzzer Reminder
When all doors are locked or unlocked by Intelligent Key button, Intelligent Key unit sends hazard request sig-
nal to BCM via CAN communication line.
BCM flashes hazard warning lamps as a reminder and Intelligent Key unit sounds Intelligent Key warning
buzzer as a reminder.
Operating function of hazard and buzzer reminder
Key reminder functions
Intelligent Key
Door switch
Unlock sensor
Door lock actuator
Inside key antenna
Intelligent Key warning buzzer
Intelligent Key unit
CAN communication system
BCM
Any door open to close×××××××××
LIIA2625E
Remote controller operation Operation condition Operation
Lock All doors are closed All doors lock

INTELLIGENT KEY SYSTEM
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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 out of ignition key cylinder), doors are unlocked with Intelligent Key button.
When Intelligent Key unit does not receive the following signals within 30 seconds, 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 ignition switch)
Auto door lock mode can be changed by “AUTO RELOCK TIMER” mode in “WORK SUPPORT”. Refer to BL-
11 3 , "WORK SUPPORT" .
Panic Alarm Function
When ignition knob switch is OFF (ignition switch is not pressed), or key switch is OFF (mechanical key is not
inserted in key cylinder), by press and holding the panic alarm button on Intelligent Key will send a panic alarm
signal to Intelligent Key unit.
Intelligent Key unit sends alarm request signal to BCM via CAN communication line.
BCM sends headlamp request signal and horn signal to IPDM E/R. Then, IPDM E/R turns on and off head-
lamp and 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 controller of Intelligent Key

When door request switch is pressed (Intelligent Key is outside vehicle)
Panic alarm function's press and holding time value can be changed in “PANIC ALARM DELAY” mode in
“WORK SUPPORT”. Refer to BL-113, "
WORK SUPPORT" .
Intelligent Key button operation Hazard warning lamp flashIntelligent Key warning buzzer
(driver door)Horns
(High and low)
Lock Twice — Once
Unlock Once — —

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INTELLIGENT KEY SYSTEM
Revision: June 20062007 Versa
List of Operation Related Parts
Parts marked with × are the parts related to operation.
Remote keyless entry functions
Intelligent Key
Key switch
Ignition knob switch
Door request switch
Door switch
Back door lock assembly (back door switch)
Door lock actuator
Intelligent Key warning buzzer
Intelligent Key unit
CAN communication system
BCM
Hazard warning lamp
Horn
IPDM E/R
Head lamp
Door lock/unlock function by Intelligent Key button× ××× ×××
Hazard and buzzer reminder function×××××
Auto door lock function×× ××× ×××
Panic alarm function×××× ××× ×××

INTELLIGENT KEY SYSTEM
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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.
Then 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 to BCM 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 Intelli-
gent Key. For details, refer toBL-212, "
NATS (Nissan Anti-Theft System)" .
All of the originally supplied Intelligent Key IDs (except for key) 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.
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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 solenoid
Engine start function by the Intelligent Key××××××××× ×
Engine start function by the mechanical key×××××××

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INTELLIGENT KEY SYSTEM
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WARNING CHIME/BUZZER/LAMPS FUNCTION
Operation Description
The following warning chime (combination meter), Intelligent Key warning buzzer (driver door), warning lamps
"KEY" and “P-SHIFT” (with CVT) or "LOCK" (with M/T) 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

Take away warning chime

Door lock operation warning chime

Intelligent key low battery warning

P position warning (with CVT)

LOCK position warning (with M/T)
NOTE:
For key-in-ignition warning chime related concerns only, refer to DI-47, "
WARNING CHIME" .

INTELLIGENT KEY SYSTEM
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Operation Condition
Operation ConditionWarning chime/buzzer Warning lamp
Chime
(combina-
tion meter)Buzzer
(driver
door)KEYLOCK
(M/T)P-SHIFT
(CVT)
Ignition switch warning chime

Mechanical key is out of ignition switch
(Key switch is OFF)

Ignition switch is in the ACC, OFF or
LOCK position.
[ignition switch is pressed
(ignition knob switch is ON).]

Driver door is open.activate — — — —
Ignition key warning chime
(When mechanical key is used)

Mechanical key is inserted in ignition
switch (key switch is ON).

Ignition switch is in the ACC, OFF or
LOCK position.

Driver door is open.activate — — — —
P position warning (CVT)When selector lever is in other than P
position, ignition switch is turned from ON
to OFF.activate — — — Flash
OFF position warn-
ing chimeFor internal

Ignition switch is turned from ACC to
OFF.
[ignition switch is pressed (ignition knob
switch is ON).]

Ignition switch is in the LOCK position
and pressed for 1 second.activate — — Flash —
For externalWhen driver door is opened and then
closed while the OFF position warning
chime above is operating—activate—— —
Ta k e a w a y w a r n i n gRight after
door is closedRight after door is closed and the follow-
ing conditions are met.

Ignition knob is pressed and in rotat-
able or rotated state

Intelligent Key can not be detected
inside the vehicle—activateFlash
(red)——
Any door is
openedAny door is opened and the following con-
ditions are met.

Ignition knob is pressed and in rotat-
able or rotated state

Intelligent Key unit will perform key ID
verification with Intelligent Key through
inside key antenna every 5 second, if
the key ID verification is NG.——Flash
(red)——
Ta k e a w a y
from the win-
dowTake away from the window and the fol-
lowing conditions are met.

Ignition knob is pressed and in rotat-
able or rotated state

Vehicle speed below 5 km/h (3 m.p.h.)

Intelligent Key unit will perform key ID
verification with Intelligent Key through
inside key antenna every 30 second, if
the key ID verification is NG.
(This warning function will be disabled
if mechanical key is inserted into the
key cylinder.)
NOTE:
Default setting of this function is OFF.activate —Flash
(red)——