2005 INFINITI FX35 Key cylinder

BL-188
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2005 July 2005 FX
System DescriptionAIS004OT
DESCRIPTION
Operation Flow
Setting the Vehicle Security System
Initial condition

Ignition switch is in OFF position.
Disarmed phase

When hood, doors or back door is open, the vehicle security system is set in the disarmed phase on the
assumption that the owner is inside or near the vehicle.

When the vehicle security system is in the disarmed phase, the security indicator lamp blinks every 2.4
seconds.
Pre-armed phase and armed phase
When the following operation 1 or 2 is performed, the vehicle security system turns into the “pre-armed”
phase. (The security indicator lamp illuminates.)
1. BCM receives LOCK signal from front door key cylinder switch, key fob or Intelligent Key after hood, back door and all doors are closed.
2. Hood, back door and all doors are closed after front doors are locked by key or door lock and unlock switch.
The security indicator lamp illuminates for 30 seconds. then, the system automatically shifts into the
“armed” phase.
PIIB0176E

BL-190
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2005 July 2005 FX

through back door closure motor terminal 8

through body grounds B15 and B45.
VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by

opening a door

opening the back door

opening the hood

detection of battery disconnect and connect.
The vehicle security system will be triggered once the system is in armed phase,
When BCM receives a ground signal at terminals 12 (passenger side door), 13 (rear RH door), 58 (back door),
62 (driver side door), 63 (rear LH door), or receives a signal from the IPDM E/R (hood switch).
When the vehicle security system is triggered,
ground is supplied intermittently from IPDM E/R terminals 38 and 60.
When headlamp high relay (with built-in IPDM E/R) and horn relay are energized and then power is supplied
to headlamps (LH and RH) and horns (HIGH and LOW).
The headlamps flash and the horn sounds intermittently.
The alarm automatically turns off after 50 seconds, but will reactivate if the vehicle is tampered with again.
VEHICLE SECURITY SYSTEM DEACTIVATION
To deactivate the vehicle security system, a door or the back door must be unlocked with the key, key fob or
Intelligent Key.
When the key is used to unlock a door, BCM terminal 22 receives signal

from terminal 14 of the power window main switch (door lock and unlock switch).
When the BCM receives either one of these signals or unlock signal from key cylinder switch, key fob or Intel-
ligent Key, the vehicle security system is deactivated. (Disarmed phase)
PANIC ALARM OPERATION
Remote keyless entry system may or may not operate vehicle security system (horn and headlamps) as
required.
When the remote keyless entry system is triggered, ground is supplied intermittently from IPDM E/R terminals
38 and 60.
When headlamp relay (which built-in IPDM E/R) and horn relay are energized and then power is supplied to
headlamps (LH and RH) and horns (HIGH and LOW).
The headlamp flashes and the horn sounds intermittently.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob or Intelligent
Key.

VEHICLE SECURITY (THEFT WARNING) SYSTEM BL-201
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Revision: 2005 July 2005 FX
6. Touch “THEFT ALM”.
7. Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” AND “WORK SUPPORT”
CONSULT-II APPLICATION ITEM
Work Support
Data Monitor
LIIA0034E
BCIA0031E
Test Item Description
SECURITY ALARM SET This mode is able to confirm and change security alarm ON-OFF setting.
THEFT ALM TRG The switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching “CLEAR”
on CONSULT-II screen.
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
TRUNK OPNR SW This is displayed even when it is not equipped.
TRUNK CYL SW This is displayed even when it is not equipped.
TRUNK OPN MNTR This is displayed even when it is not equipped.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
KEYLESS TRUNK Indicates [ON/OFF] condition of trunk opener signal from key fob.
HOOD SW Indicates [ON/OFF] condition of hood switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch LH.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch RH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
KEY CYL LK SW Indicates [ON/OFF] condition of lock signal from key cylinder switch.
KEY CYL UN SW Indicates [ON/OFF] condition of unlock signal from key cylinder switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.

BL-204
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2005 July 2005 FX
Trouble Diagnosis Symptom ChartAIS004P3
*1: Make sure the system is in the armed phase. Procedure
Diagnostic procedure Refer to page
Symptom
1 Vehicle security
system cannot be
set by ···· Door switch Diagnostic Procedure 1 (Check door, hood and back door switch)
BL-205
Lock / unlock switch Diagnostic Procedure 6 (Check door lock / unlock switch)BL-212
Door outside key Diagnostic Procedure 3 (Check door key cylinder switch)BL-212
Key fob Check remote keyless entry. BL-56
Intelligent Key Check Intelligent Key.BL-89
— If the above systems are “OK”, replace BCM.BCS-16
Security indicator does not turn “ON”. Diagnostic Procedure 2 (Check security indicator lamp)
BL-211If the above systems are “OK”, replace BCM.BCS-16
2 *1 Vehicle secu-
rity system does
not alarm when
···· Any door is opened. Diagnostic Procedure 1 (Check door, hood and back door switch)
BL-205If the above systems are “OK”, replace BCM.BCS-16
3 Vehicle security
alarm does not
activate. Horn alarm
Diagnostic Procedure 4 (Check vehicle security horn alarm)
BL-212
Check horn function. BL-83
If the above systems are “OK”, replace BCM.BCS-16
Head lamp alarm Diagnostic Procedure 5 (Check head lamp alarm)
BL-212If the above systems are “OK”, replace BCM.BCS-16
4 Vehicle security
system cannot be
canceled by ···· Door outside key
Diagnostic Procedure 3 (Check door key cylinder switch)
BL-212
If the above systems are “OK”, check power window main switch. EI-34
Key fob Check remote keyless entry function.
BL-57If the above systems are “OK”, replace BCM.BCS-16
Intelligent Key Check Intelligent Key
BL-91If the above systems are “OK”, replace BCM.BCS-16

BL-212
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: 2005 July 2005 FX
Diagnostic Procedure 3AIS004P6
FRONT DOOR KEY CYLINDER SWITCH CHECK
1. CHECK KEY CYLINDER SWITCH OPERATION
Check door key cylinder switch using key.
Do doors lock / unlock when using the key?
YES >> Front door key cylinder switch operation is OK.
NO >> Check door key cylinder switch circuit. Refer to GW-69, "
Front Door Key Cylinder Switch Check" .
Diagnostic Procedure 4AIS004P7
VEHICLE SECURITY HORN ALARM CHECK
1. CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
YES >> Check harness for open or short between IPDM E/R and horn relay.
NO >> Check horn circuit. Refer to WW-59, "
HORN" .
Diagnostic Procedure 5AIS004P8
VEHICLE SECURITY HEADLAMP ALARM CHECK
1. CHECK HEADLAMP OPERATION
Check if headlamp operates by lighting switch.
Does headlamp come on when turning switch
“ON”?
YES >> Headlamp alarm circuit is OK.
NO >> Check headlamp system. Refer to LT- 7 , "
HEADLAMP - XENON TYPE -" or LT- 3 9 , "DAYTIME
LIGHT SYSTEM" .
Diagnostic Procedure 6AIS004P9
DOOR LOCK AND UNLOCK SWITCH CHECK
1. CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL
Check if power door lock operated by door lock and unlock switch.
Do doors lock / unlock when using each door lock and unlock switches?
YES >> Door lock and unlock switch is OK.
NO >> Check door lock and unlock switch. Refer to BL-48, "
Check Door Lock and Unlock Switch" .

BL-214
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2005 July 2005 FX
System DescriptionAIS004PB
DESCRIPTION
IVIS (Infiniti Vehicle Immobilizer System – NATS) has the following immobilizer functions:

Engine immobilizer shows high anti-theft performance to prevent engine start by other than the owner
(registered key: ignition key, mechanical key and Intelligent Key).

Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft perfor-
mance to prevent key from being copied or stolen.

In the vehicle without Intelligent Key system, security indicator always flashes with other than ignition
switch ON or START position.

In the vehicle with Intelligent Key system, security indicator always flashes with mechanical key removed
condition (key switch OFF) and ignition knob released condition on LOCK position (ignition knob switch
OFF).

Therefore, IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system.

If system detects malfunction, it turns on security indicator in ignition switch ON position.

If the owner requires, mechanical key ID can be registered for up to 5 keys.

During trouble diagnosis or when the following parts have been replaced, and if ignition key or mechanical
key is added, registration* is required.
*: All keys kept by the owner of the vehicle should be registered with ignition key or mechanical key.
–ECM
–BCM
–Ignition key (models without Intelligent Key system)
–Mechanical key (models with Intelligent Key system)

IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key or mechanical key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS
(NATS) software. When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key
or mechanical key or mechanical key IDs can be carried out.
Regarding the procedures of IVIS (NATS) initialization and ignition key or mechanical key ID registration,
refer to CONSULT-II operation manual, NATS-IVIS/NVIS.
SECURITY INDICATOR

Warns that the vehicle has IVIS (NATS).

In the vehicle without Intelligent Key system, security indicator always flashes with other than ignition
switch ON or START position. In the vehicle with Intelligent Key system, security indicator always flashes
with mechanical key removed condition (key switch OFF) and ignition knob released condition on LOCK
position (ignition knob switch OFF).
NOTE:
Because security indicator is highly efficient, the battery is barely affected.
Condition of Security Indicator
WITHOUT INTELLIGENT KEY SYSTEM
WITH INTELLIGENT KEY SYSTEM

In ignition knob operation with Intelligent Key, it always turns on with pushing ignition knob, and always
flashes with ignition knob released (ignition knob switch OFF) condition on ignition knob “LOCK” position.

In ignition knob operation with mechanical key, it turns off on the condition that mechanical key is inserted
in key cylinder, and always flashes with ignition knob released (ignition knob switch OFF) condition on
mechanical key removed condition.
Security indicator
condition Ignition key
Operation or condition of ignition key
Ignition switch: ON position Ignition switch:
ACC position Ignition switch:
OFF position
(Key is inserted.) Ignition switch:
OFF position
(Remove key.)
Register key OFF Flashing Flashing Flashing
Ignition key not
registered ON Flashing Flashing Flashing

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-219
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Terminals and Reference Value for Steering Lock Unit/with Intelligent Key Sys-
tem
AIS004PF
Terminals and Reference Value for Intelligent Key Unit/with Intelligent Key Sys-
tem
AIS004PG
Te r -
minal
No. Wire
color Signal Designation Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1 L/R Power source (Fuse) LOCK — Battery voltage
2R/W Steering lock unit
power supply LOCK — 5
3R/B Steering lock unit com-
munication signal LOCK Press ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
4Y/B Steering lock unit
ground —— 0
SIIA1911J
Te r -
minal
No. Wire
color Signal designation Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1R/W Steering lock unit
power supply LOCK — 5
2 L CAN-H — — —
3 R CAN-L — — —
6G/R Ignition power supply
(ON) ON Ignition knob ON or START position Battery voltage
7 B/W Key switch LOCK Insert mechanical key into ignition key
cylinder. Battery voltage
Remove mechanical key from ignition
key cylinder. 0
11 L/R Power source (Fuse) — — Battery voltage
12 B Ground — — 0
27 L/W Ignition knob switch — Press ignition knob. Battery voltage
Return ignition knob to LOCK position. 0
31 Y/B Steering lock unit
ground —— 0
32 R/B Steering lock unit com-
munication signal LOCK Press ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
SIIA1911J

BL-220
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2005 July 2005 FX
Terminals and Reference Value for BCMAIS004PH
*: With Intelligent Key system Te r -
minal No. Wire
color Signal designation Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
21 G/B NATS antenna apm. — Ignition knob OFF → ON position Tester pointer should move just
after turning ignition knob “ON”
23 G/OR Security indicator lamp LOCK Goes OFF
→ illuminates (Every 2.4
seconds) Battery voltage
→ 0
25 BR NATS antenna amp. — Ignition knob or switch OFF
→ ON posi-
tion Tester pointer should move just
after turning ignition knob “ON”
37* B/W Key switch — Insert mechanical key into ignition key
cylinder Battery voltage
Remove mechanical key from ignition
key cylinder 0
38 W/L Ignition power supply
(ON) ON Ignition knob ON or START position Battery voltage
39 L CAN-H — — —
40 R CAN-L — — —
42 L/R Power source (Fuse) — — Battery voltage
49 B Ground — — 0
52 B Ground — — 0
55 G Power source (Fuse) — — Battery voltage