Infiniti QX4. Electrical System (2003 year). Manual — part 29
System Description
NBEL0401
DESCRIPTION
NBEL0401S01
1. Operation Flow
NBEL0401S0101
SEL334W
2. Setting The Vehicle Security System
NBEL0401S0102
Initial condition
1) Ignition switch is in OFF position.
Disarmed phase
When the vehicle security system is in the disarmed phase, the security indicator lamp blinks every 2.6 sec-
onds.
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) Smart entrance control unit receives LOCK signal from key cylinder switch or keyfob after hood, glass
hatch and all doors are closed.
2) Hood, glass hatch and all doors are closed after front doors are locked by key, lock/unlock switch or key-
fob.
After about 30 seconds, the system automatically shifts into the “armed” phase (the system is set). (The
security indicator lamp blinks every 2.6 seconds.)
3. Canceling The Set Vehicle Security System
NBEL0401S0103
When the following 1) or 2) operation is performed, the armed phase is canceled.
1) Unlock the doors with the key or keyfob.
2) Open the glass hatch with the key or keyfob.
4. Activating The Alarm Operation of The Vehicle Security System
NBEL0401S0104
Make sure the system is in the armed phase. (The security indicator lamp blinks every 2.6 seconds.)
When the following operation 1) or 2) is performed, the system sounds the horns and flashes the headlamps
for about 50 seconds.
1) Engine hood, glass hatch or any door is opened during armed phase.
2) Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY AND GROUND
NBEL0401S02
Power is supplied at all times
쐌
through 7.5A fuse [No. 24, located in the fuse block (J/B)]
쐌
to security indicator lamp terminal 1, and
쐌
to smart entrance control unit terminal 49.
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description
EL-453
With the ignition switch in the ON or START position, power is supplied
쐌
through 7.5A fuse [No. 11, located in the fuse block (J/B)]
쐌
to smart entrance control unit terminal 27.
With the ignition switch in the ACC or ON position, power is supplied
쐌
through 10A fuse [No. 10, located in the fuse block (J/B)]
쐌
to smart entrance control unit terminal 26.
Ground is supplied
쐌
to smart entrance control unit terminals 43 and 64
쐌
through body grounds M77 and M111.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
NBEL0401S03
The operation of the vehicle security system is controlled by the doors, hood and glass hatch.
Pattern A
NBEL0401S0301
To activate the vehicle security system, the smart entrance control unit must receive signals indicating the
doors, hood and glass hatch are closed.
When a door is open, smart entrance control unit terminal 1, 2 or 3 receives a ground signal from each door
switch.
When the hood is open, smart entrance control unit terminal 6 receives a ground signal
쐌
from terminal 1 of the hood switch
쐌
through body grounds E13 and E41.
When the glass hatch is open, smart entrance control unit terminal 13 receives a ground signal
쐌
from terminal 1 of the glass hatch switch
쐌
through body grounds B11, B22 and D210.
When smart entrance control unit receives LOCK signal from key cylinder switch or keyfob and none of the
described conditions exist, the vehicle security system will automatically shift to armed mode.
Pattern B
NBEL0401S0302
To activate the vehicle security system, the smart entrance control unit must receive signal indicating any door
(including hood and glass hatch) is opened.
When the front doors are locked with key, lock/unlock switch or keyfob and then all doors are closed, the
vehicle security system will automatically shift to armed mode.
VEHICLE SECURITY SYSTEM ACTIVATION
NBEL0401S04
Pattern A
NBEL0401S0401
With all doors (including hood and glass hatch) closed, if the key is used to lock doors, smart entrance con-
trol unit terminal 33 receives a signal from power window main switch terminal 14.
When key cylinder switch is in LOCK position, ground is supplied
쐌
to power window main switch terminal 4
쐌
from terminal 3 of the front door key cylinder switch LH
쐌
through terminal 2 of front door key cylinder switch LH
쐌
through body grounds M77 and M111, or
smart entrance control unit terminal 11 receives a ground signal
쐌
from terminal 1 of the back door key cylinder switch
쐌
through body grounds B11, B22 and D210.
If this signal, or lock signal from keyfob is received by the smart entrance control unit, the vehicle security
system will activate automatically.
NOTE:
Vehicle security system can be set even though all doors are not locked.
Pattern B
NBEL0401S0402
With any door (including hood and glass hatch) open, if lock/unlock switch is used to lock doors, smart entrance
control unit terminal 33 receives a LOCK signal
쐌
from terminal 14 of power window main switch
쐌
through body grounds M77 and M111, or
쐌
from terminal 16 of front power window switch RH
VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description (Cont’d)
EL-454
쐌
through body grounds M4, M66 and M147, or
With any door (including hood and glass hatch) open if the key is used to lock doors, smart entrance control
unit terminal 33 receives a LOCK signal from power window main switch terminal 14.
When key cylinder switch LOCK signal ground is supplied
쐌
to power window main switch terminal 4
쐌
from terminal 3 of the front door key cylinder switch LH
쐌
through terminal 2 of front door key cylinder switch LH
쐌
through body grounds M77 and M111, or
smart entrance control unit terminal 11 receives a ground signal
쐌
from terminal 1 of the back door key cylinder switch
쐌
through body grounds B11, B22 and D210.
If these signals and lock signal from keyfob are received by the smart entrance control unit, ground signals
of terminals 1, 2 and 3 are interrupted and all doors are closed, the vehicle security system will activate auto-
matically.
NOTE:
Vehicle security system can be set even though the rear door is not locked.
Once the vehicle security system has been activated, smart entrance control unit terminal 38 supplies ground
to terminal 2 of the security indicator lamp.
The security lamp will illuminate for approximately 30 seconds and then blinks every 2.6 seconds.
Now the vehicle security system is in armed phase.
VEHICLE SECURITY SYSTEM ALARM OPERATION
NBEL0401S05
The vehicle security system is triggered by
쐌
opening a door
쐌
opening the hood or the glass hatch
쐌
detection of battery disconnect and connect.
Once the vehicle security system is in armed phase, if the smart entrance control unit receives a ground sig-
nal at terminal 1, 2, 3 (door switch), 13 (glass hatch switch) or 6 (hood switch), the vehicle security system
will be triggered. The headlamps flash and the horn sounds intermittently.
Power is supplied at all times
쐌
through 7.5A fuse (No. 52, located in fuse and fusible link box)
쐌
to horn relay terminals 1 and 3.
쐌
through 10A fuse (No. 54, located in fuse and fusible link box)
쐌
to horn relay terminal 6.
쐌
through 15A fuse (No. 60, located in fuse and fusible link box)
쐌
to headlamp LH relay terminals 1 and 3,
쐌
through 15A fuse (No. 59, located in fuse and fusible link box)
쐌
to headlamp RH relay terminals 1 and 3.
When the vehicle security system is triggered, ground is supplied intermittently
쐌
to headlamp (LH and RH) relay terminal 2 from smart entrance control unit terminals 21 and 59
쐌
through smart entrance control unit terminals 43 and 64.
When headlamp relays (LH and RH) are energized and then power is supplied to headlamps (LH and RH).
The headlamps flash intermittently.
When the vehicle security system is triggered, ground is supplied intermittently
쐌
from smart entrance control unit terminal 42
쐌
to horn relay terminal 2.
When horn relay are energized, then power is supplied to horn.
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
NBEL0401S06
To deactivate the vehicle security system, a door or glass hatch must be unlocked with the key or keyfob.
When the key is used to unlock the door, smart entrance control unit terminal 33 receives an UNLOCK sig-
nal from power window main switch terminal 14. Refer to “POWER WINDOW SERIAL LINK” (EL-379).
When key cylinder switch is in UNLOCK position, the ground is supplied
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description (Cont’d)
EL-455
쐌
to power window main switch terminal 6
쐌
from the front door key cylinder switch LH terminal 1
쐌
through front door key cylinder switch LH terminal 2, and
쐌
through body grounds M77 and M111.
When the key is used to open the glass hatch, smart entrance control unit terminal 12 receives a ground sig-
nal from terminal 3 of the back door key cylinder switch.
When the smart entrance control unit receives either one of these signals or unlock signal from keyfob, the
vehicle security system is deactivated. (Disarmed phase)
PANIC ALARM OPERATION
NBEL0401S07
Remote keyless entry system may or may not operate vehicle security system (horn and headlamps) as
required.
When the remote keyless entry system (panic alarm) is triggered, ground is supplied intermittently
쐌
from smart entrance control unit terminals 21 and 59
쐌
to headlamp (LH and RH) relay terminal 2
쐌
from smart entrance control unit terminal 42
쐌
to horn relay terminal 2.
The headlamp flashes and the horn sounds intermittently.
The alarm automatically turns off after 25 seconds or when smart entrance control unit receives any signal
from keyfob.
VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description (Cont’d)
EL-456
NOTE:
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description (Cont’d)
EL-457
Schematic
NBEL0402
MEL359Q
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Schematic
EL-458
MEL360Q
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
Schematic (Cont’d)
EL-459
Wiring Diagram — VEHSEC —
NBEL0403
FIG. 1
NBEL0403S01
MEL456O
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Wiring Diagram — VEHSEC —
EL-460
FIG. 2
NBEL0403S02
MEL405R
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
Wiring Diagram — VEHSEC — (Cont’d)
EL-461
FIG. 3
NBEL0403S03
MEL362Q
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Wiring Diagram — VEHSEC — (Cont’d)
EL-462
FIG. 4
NBEL0403S04
MEL623P
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
Wiring Diagram — VEHSEC — (Cont’d)
EL-463
FIG. 5
NBEL0403S05
MEL363Q
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Wiring Diagram — VEHSEC — (Cont’d)
EL-464
SEL670Y
CONSULT-II Inspection Procedure
=NBEL0404
“THEFT WAR ALM”
NBEL0404S01
1.
Turn ignition switch “OFF”.
2.
Connect “CONSULT-II” and “CONSULT-II CONVERTER” to
the data link connector.
SKIA3098E
3.
Turn ignition switch “ON”.
4.
Touch “START (NISSAN BASED VHCL)”.
SEL941W
5.
Touch “SMART ENTRANCE”.
If “SMART ENTRANCE” is not indicated, go to GI-42, “CON-
SULT-II Data Link Connector (DLC) Circuit”.
SEL273W
6.
Touch “THEFT WAR ALM”.
SEL274W
7.
Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” and “WORK SUPPORT”
are available.
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
CONSULT-II Inspection Procedure
EL-465
CONSULT-II Application Item
NBEL0491
“THEFT WAR ALM”
NBEL0491S01
Data Monitor
NBEL0491S0101
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.
DOOR SW-RR
Indicates [ON/OFF] condition of rear door switch.
TRNK OPNR 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.
DOOR SW-DR
Indicates [ON/OFF] condition of front door switch LH.
DOOR SW-AS
Indicates [ON/OFF] condition of front door switch RH.
TRNK OPN MNTR
Indicates [ON/OFF] condition of back door switch.
TRUNK KEY SW
Indicates [ON/OFF] condition of back door key cylinder switch.
HOOD SWITCH
Indicates [ON/OFF] condition of hood switch.
LOCK SW DR/AS
Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
UNLK SW DR/AS
Indicates [ON/OFF] condition of unlock signal from door lock/unlock LH and RH.
LK BUTTON/SIG
Indicates [ON/OFF] condition of lock signal from keyfob.
UN BUTTON/SIG
Indicates [ON/OFF] condition of unlock signal from keyfob.
TRUNK BTN/SIG
Indicates [ON/OFF] condition of trunk open signal from keyfob.
NOTE:
Even though TRUNK BTN/SIG is actually displayed on the CONSULT-II screen, it is not equipped, therefore, they cannot be activated.
Active Test
NBEL0491S0102
Test Item
Description
THEFT IND
This test is able to check security indicator lamp operation. The lamp will be turned on when
“ON” on CONSULT-II screen is touched.
HORN
This test is able to check vehicle security alarm operation. The alarm will be activated for 0.5
seconds after “ON” on CONSULT-II screen is touched.
HEAD LAMP
This test is able to check vehicle security alarm headlamp operation. The headlamp illumi-
nates for 0.5 seconds after “ON” on CONSULT-II screen is touched.
Work Support
NBEL0491S0103
Test Item
Description
THEFT ALM TRG
The switch which triggered theft warning alarm is recorded. This mode is able to confirm and
erase the record of theft waning alarm. The trigger data can be erased by touching “CLEAR”
on CONSULT-II screen.
SECURITY ALARM SET
Theft warning alarm mode can be changed in this mode. Selects ON-OFF of theft warning
alarm mode.
쐌
MODE 1 (ON)/MODE 2 (OFF)
VEHICLE SECURITY (THEFT WARNING) SYSTEM
CONSULT-II Application Item
EL-466
Trouble Diagnoses
=NBEL0406
PRELIMINARY CHECK
NBEL0406S01
The system operation is canceled by turning ignition switch to
“ACC” at any step between START and ARMED in the following
flow chart.
SEL733W
After performing preliminary check, go to symptom chart
below.
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses
EL-467
SYMPTOM CHART
NBEL0406S02
REFERENCE PAGE (EL-
)
SYMPTOM
PRELIMINAR
Y
CHECK
POWER
SUPPL
Y
AND
GROUND
CIRCUIT
CHECK
DOOR,
HOOD
AND
GLASS
HA
TCH
SWITCH
CHECK
SECURITY
INDICA
T
O
R
LAMP
CHECK
DOOR
KEY
CYLINDER
SWITCH
CHECK
BACK
DOOR
KEY
CYLINDER
SWITCH
CHECK
VEHICLE
SECURITY
HORN
ALARM
CHECK
VEHICLE
SECURITY
HEADLAMP
ALARM
CHECK
Check
“REMOTE
KEYLESS
ENTR
Y”
system.
1
Vehicle security indicator does not
illuminate for 30 seconds.
X
X
X
X
V
ehicle
security
system
cannot
be
set
by
.
All items
X
X
X
Door outside key
X
X
Back door key
X
X
Remote keyless entry
X
X
2
*1
V
ehicle
security
system
does
not
alarm
when
...
Any door is opened.
X
X
Any door is unlocked
without using key or
keyfob
X
3
V
ehicle
security
alarm
does
not
activate.
All function
X
X
Horn alarm
X
X
Headlamp alarm
X
X
4
V
ehicle
security
system
cannot
be
canceled
by
.
Door outside key
X
X
Back door key
X
X
Remote keyless entry
X
X
X : Applicable
*1: Make sure the system is in the armed phase.
Before starting trouble diagnoses above, perform preliminary
check, EL-467.
Symptom numbers in the symptom chart correspond with those of
preliminary check.
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Trouble Diagnoses (Cont’d)
EL-468
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