2006 INFINITI FX35 remote control

BL-88
INTELLIGENT KEY SYSTEM
Revision: 2006 December 2006 FX35/FX45
System DescriptionNIS001N6

The Intelligent Key system is a system which can lock and unlock the doors (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 Intelligent Key and the
vehicle

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

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

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

If an Intelligent Key was 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 FUNCTION
Operation Description

When the driver door, passenger door, or back door request switch is pressed, Intelligent Key unit sends a
request signal from the transmission antenna corresponding to the pressed door request switch, key-ID
verification is performed using two-way communication with Intelligent Key, and if ID is successfully veri-
fied, a door lock/unlock request signal is sent to BCM (Body Control Module) 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 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.
PIIB4645E

INTELLIGENT KEY SYSTEM BL-89
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Revision: 2006 December 2006 FX35/FX45
Driver side door request switch operation

When door request switch (driver side) is pushed (unlock), driver side door lock actuator is unlocked.
(Selective door unlock function)

When door request switch (driver side) is pushed (unlock) for the second time within 5 seconds after the
first operation, door lock actuators on passenger's and other's doors are unlocked.

Unlock mode can be changed using “WORK SUPPORT” mode in “SELECTIVE UNLOCK FUNCTION”.
Refer to BL-116, "
WORK SUPPORT" .
Passenger side door request switch operation

When door request switch (passenger side) is pushed (unlock), passenger side door lock actuator is
unlocked.

When door request switch (passenger side) is pushed (unlock) for the second time with in 5 seconds after
the first operation, door lock actuators on driver's and other's doors are unlocked.

Unlock mode can be changed using “WORK SUPPORT” mode in “SELECTIVE UNLOCK FUNCTION”.
Refer to BL-116, "
WORK SUPPORT" .
Back door request switch operation

When back door request switch is pushed (unlock), back door lock actuator is unlocked.

When back door request switch is pushed (unlock) for the second time with in 5 seconds after the first
operation, door lock actuators on driver's and passenger's doors are unlocked.

Unlock mode can be changed using “WORK SUPPORT” mode in “SELECTIVE UNLOCK FUNCTION”.
Refer to BL-116, "
WORK SUPPORT" .
Operation Condition
Auto Door Lock Function
After the door request switch in the driver or passenger or back door is operated and the vehicle door is
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 30 seconds.
Key Reminder Function
The hazard lamps will flash and the Intelligent Key warning buzzer will sound several times 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.
Intelligent Key Lock-in Prevention Function
When doors are locked using door lock and unlock switch or driver door lock knob while Intelligent key is in
vehicle and doors open, 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.
CAUTION:
The above function operates when the Intelligent Key is inside the vehicle. However, there are cases
that 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 sometimes does not operate
if the Intelligent Key is in the door pocket for the open door.
REMOTE CONTROL ENTRY FUNCTIONS
Door Lock 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
Request switch operation Operating conditions (When all the conditions below are met)
Door request switch (Driver side)

Closing all doors (door switch: OFF)

The Intelligent Key is in the antenna detection area for the door for which the door
request switch (LOCK) was operated.
Door request switch (passenger side)
Door request switch (back door)
Vehicle operation Hazard lamp Intelligent Key warning buzzer
Door unlock operation Once Once
Door lock operation Twice Twice

BL-90
INTELLIGENT KEY SYSTEM
Revision: 2006 December 2006 FX35/FX45
accepted, a door lock or door unlock request signal is sent to BCM via CAN communication to lock/unlock
the door.

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.
OPERATION CONDITION
Door lock/unlock operation is necessary for all doors close.
Map Lamp And Keyhole Illumination Function
When the following conditions come:

condition of map lamp switch is DOOR position;

door switch OFF (when all the doors are closed);
Remote control button of Intelligent Key turns on interior lamp (for 30 seconds) with input of UNLOCK signal
from Intelligent Key.
Panic Alarm Function
When key switch is OFF and ignition knob is not pushed (when mechanical key is not inserted in ignition
knob), BCM turns ON and OFF horn and headlamp intermittently with input of PANIC ALARM signal from
Intelligent Key. The alarm automatically turns off after 25 seconds or when Intelligent Key unit receives any
signal from Intelligent Key.
Panic alarm operation mode can be changed using “WORK SUPPORT” mode in “PANIC ALARM DELAY”.
Refer to BL-116, "
WORK SUPPORT" .
Remote Control Power Window Down (Open) Operation
When Intelligent Key unlock switch is turned ON with ignition switch OFF, and Intelligent Key unlock switch is
detected to be on continuously for 3 seconds, the driver's door and passenger's door power windows are
simultaneously opened.
Power window is operated to open and the operation continues as long as the Intelligent Key unlock switch is
pressed.
Remote control power window down operation mode can be changed using “P/W DOWN DELAY” mode in
“WORK SUPPORT”. Refer to BL-116, "
WORK SUPPORT" .
Key Reminder Function
As an operation verification function, when doors are locked or unlocked using Intelligent Key remote control-
ler button operation, hazard lamps flash and horn sounds.
ENGINE STARTUP FUNCTION
Operation Description

When ignition knob is pressed, Intelligent Key unit sends request signal from inside key antenna, key-ID
verification is conducted 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 and ignition knob switch is in the ON state, 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, or in glove box.
Vehicle operation Hazard lamp Horn
Door unlocking operation Once —
Door locking operation Twice Once

BL-94
INTELLIGENT KEY SYSTEM
Revision: 2006 December 2006 FX35/FX45
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-116, "
WORK SUPPORT" .
NOTE:
Once a function setting is changed, it will remain effective even if the battery is disconnected.
Changing Settings Using Display Unit
The settings of the Intelligent Key system can be changed, using CONSULT-II, display unit, Intelligent Key and
door request switch in the center of the instrument panel.
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 executed 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.
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 further information, see the CONSULT-II Operation Manual NATS.
Setting item Description
Intelligent Key Lock Response-Sound The sound pattern of the Intelligent Key operation can be set as desired. (Setting value:
OFF, Beeper or Horn chirp)
Intelligent Key Unlock Response-Beep
Sound The beep sound when unlocking door with the Intelligent Key operation can be turned ON
or OFF.
Intelligent Key Engine Start Function This function can be performed to ON or OFF.
Intelligent Key Lock/Unlock Function The door handle request switch lock/unlock operation with the Intelligent Key can be can-
celed or activated.
Return All Settings to Default The all settings made by VEHICLE ELECTRONICS will return to default.

INTELLIGENT KEY SYSTEM BL-111
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Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Value for INTELLIGENT KEY UNITNIS001NB
Te r -
minal Wire
color Item Signal
Input/
output Condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1R/W Steering lock unit
power supply Output LOCK — 5
2 L CAN-H Input/
Output —— —
3 P CAN-L Input/
Output —— —
4LG Intelligent Key warn-
ing buzzer Output LOCK Operate remote
controller button or door request
switch. Buzzer
OFF Battery voltage
Sound
buzzer 0
5W/L Door request switch
(driver side) Input — Door request switch operation:
Press (ON). 0
Other than the above (OFF) 5
6 W Ignition switch (ON) Input ON or START — Battery voltage
7 B/W key switch Input LOCK Insert mechanical key into igni-
tion key cylinder. Battery voltage
Remove mechanical key from
ignition key cylinder. 0
10 LG Ignition switch
(ACC) Input ACC or ON — Battery voltage
11 L / R Power source
(Fuse) Input — — Battery voltage
12 B Ground — — — 0
13 P Inside key antenna
(+)
(Luggage room) Output
LOCK Any door open
→ all doors shut
(Door switch: ON → OFF)
14 L Inside key antenna
(-)
(Luggage room) Output
15 G Inside key antenna
(+) signal
(Dashboard) Output
LOCK Any door open
→ Close (Door
switch: ON → OFF)
Ignition knob switch: ON (press
ignition knob.)
16 R Inside key antenna
(-) signal
(Dashboard) Output
17 L Back door antenna
(+) Output
LOCK Back door request switch opera-
tion (Switch: ON)
18 W/L Back door antenna
(-) Output
SIIA1910J
SIIA1910J
SIIA1910J

BL-118
INTELLIGENT KEY SYSTEM
Revision: 2006 December 2006 FX35/FX45
List of Operation Related PartsNIS001NJ
Parts marked with × are the parts related to operation.
Will not operate if there is a malfunction in
the area where there is a ×.
Intelligent Key
Key switch
Ignition knob switch ACC switch
Ignition switch
Door unlock sensor
Door switch
Door request switch
Inside key antenna
Out side key antenna
Intelligent Key warning buzzer Intelligent Key unit
CAN communication system
BCM
Combination meter
Steering lock unitStop lamp switch Detention switch
Passenger side select unlock relay
Door lock/unlock operation using Intelligent
Key remote controller button operation ×××××××
Door lock/unlock operation using door
request switch operation ×××××××××
Selective door unlock function using door
request switch operation ××××××× ×
Selective door unlock function using Intelli-
gent Key remote controller button opera-
tion ××× ×××
Door lock/unlock operation using mechani-
cal key ×
Ignition knob rotation permission using
Intelligent Key ××× × × × × ×
Ignition knob rotation permission using
mechanical key ×× × × ×× ×
Engine start using Intelligent Key ×× ×××××××
Engine start using mechanical key ×× × × × × ×
Key reminder door lock operation ××××××××
Selector lever reminder operation ×× ××× ×
Ignition switch return forgotten warning ××× × × × ×
Ignition key warning (when using mechani-
cal key) ××××
Ignition switch OFF position warning (for
inside car: when door closed) ×××× × × ×
Ignition switch OFF position warning (for
outside car: when door opened/closed) ×××× × ×× × ××
Warning for removal of Intelligent Key to
outside the car (when door open/closed) ××× × × ×× × × ×
Warning for removal of Intelligent Key to
outside the car (from window) ××× × × × × ×
Door lock non-operation warning ×××××××××
Intelligent key low battery warning ×× ×××

INTELLIGENT KEY SYSTEM BL-119
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Revision: 2006 December 2006 FX35/FX45
Trouble Diagnosis Symptom ChartNIS001NK
ALL FUNCTIONS OF THE INTELLIGENT KEY ARE NOT OPERATING
REMOTE CONTROL ENTRY FUNCTION MALFUNCTION
Symptom Diagnoses service procedure Refer to page
“KEY” and “P shift” warning lamps in combination
meter do not light up at all. 1.
Check Intelligent Key unit power supply and ground
circuit BL-124
2. Check CAN communication
BL-124
3. Replace Intelligent Key unitBL-146
“KEY” and “P shift” warning lamps in combination
meter turn on, but doors cannot be locked/
unlocked or the engine can not be started using
Intelligent Key. 1.
Use CONSULT-II to check if the Intelligent Key has
been registered Refer to
CONSULT-II Operation Manual
2. Use CONSULT-II setting change function to check if
Intelligent Key system has been cancelled BL-116
3. Intelligent Key battery inspection
BL-147
4. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Door lock/unlock does not operate (other func-
tions normal) when Intelligent Key remote con-
troller button is operated. 1. Check door lock/unlock setting
BL-116
2. Intelligent Key battery inspectionBL-147
3. Check door unlock sensorBL-131
4. Check door switchBL-129
5. Replace BCMBCS-15
6. Replace Intelligent Key unit BL-146
Driver side selective door unlock function does
not operate, when Intelligent Key remote control-
ler button is operated.
(All other remote control entry function is OK.) 1. Check selective door unlock setting
BL-116
2. Replace BCMBCS-15
3. Replace Intelligent Key unit BL-146
Panic alarm (horn and headlamp) do not acti-
vate, when panic alarm button is continuously
pressed.
(All other remote control entry function is OK.) 1. Check panic alarm mode
BL-116
2. Check headlamp functionBL-145
3. Check horn functionBL-145
4. Check IPDM E/R operationBL-145
5. Check key switch (Intelligent Key unit input)BL-125
6. Check ignition knob switchBL-127
7. Replace Intelligent Key unitBL-146
Hazard lamps do not flash during door lock oper-
ation using Intelligent Key remote controller but-
ton operated.
(Turn signal lamp operation is OK.)
(All other remote control entry function is OK.) 1. Check key reminder setting
BL-116
2. Replace BCMBCS-15
3. Replace Intelligent Key unit BL-146
Hazard lamps do not flash during door lock oper-
ation using Intelligent Key remote controller but-
ton operated.
(Turn signal lamps do not operate.) Check hazard function
BL-145
Intelligent Key warning buzzer does not sound
during door lock/unlock operation using Intelli-
gent Key remote controller button is operated.
(All other remote control entry function is OK.) 1.
Check if the operation confirmation Intelligent Key
warning buzzer was cancelled by the CONSULT-II set-
tings change function BL-116
2. Check Intelligent Key warning buzzer
BL-134
3. Replace Intelligent Key unitBL-146

BL-120
INTELLIGENT KEY SYSTEM
Revision: 2006 December 2006 FX35/FX45
DOOR LOCK FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, check all power door lock system function. Refer to BL-
21, "POWER DOOR LOCK SYSTEM" .
Symptom Diagnoses service procedure Refer to page
Door lock/unlock does not operate when door
request switch operation is used (power door
lock system is normal). 1. Check door lock/unlock setting
BL-116
2. Check outside key antennaBL-135
3. Intelligent Key battery inspectionBL-147
4. Replace Intelligent Key unitBL-146
Door lock/unlock do not operate using door
request switch operated (power door lock sys-
tem is normal). 1. Check door switch
BL-1292. Check key switch (Intelligent Key unit input)BL-125
3. Check ignition knob switchBL-127
4. Replace Intelligent Key unitBL-146
Driver side selective door unlock function does
not operate, when door request switch is oper-
ated.
(All other door lock function is OK.) 1. Check selective door unlock setting
BL-116
2. Replace BCMBCS-15
Passenger side selective door unlock function
does not operate, when door request switch is
operated.
(All other door lock function is OK.) 1. Check selective door unlock setting
BL-116
2. Check passenger side select unlock relayBL-144
3. Replace Intelligent Key unitBL-146
Hazard lamps do not flash during door lock
operation using door request switch operated.
(Turn signal lamp operation is normal.)
(All other door lock function is OK.) 1. Check key reminder setting
BL-116
2. Replace BCMBCS-15
3. Replace Intelligent Key unit BL-146
Hazard lamps do not flash during door lock
operation using door request switch operated.
(Turn signal lamps do not operate.) Check hazard function
BL-145

Intelligent Key warning buzzer does not sound
during door lock/unlock operation using Intelli-
gent Key (regardless of whether Intelligent Key
remote controller button or request switch oper-
ation is used). 1. Check if the operation confirmation Intelligent Key
warning buzzer was cancelled by the CONSULT-II
settings change function BL-116
2. Check Intelligent Key warning buzzer
BL-134
3. Replace Intelligent Key unitBL-146
Door lock/unlock operation confirmation Intelli-
gent Key warning buzzer sounds, but door lock
actuator does not operate. (And hazard lamps
do not flash.) 1. Check CAN communication
BL-124
2. Replace Intelligent Key unitBL-146