2001 INFINITI QX4 key

BACK DOOR KEY CYLINDER SWITCH CHECK=NBEL0110S08
1 CHECK BACK DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK/UNLOCK SIGNAL)
Check voltage between smart entrance control unit terminals 30 or 41 and ground.
SEL314X
Refer to wiring diagram in EL-258.
OK or NG
OK©Back door key cylinder switch is OK.
NG©GO TO 2.
2 CHECK BACK DOOR KEY CYLINDER SWITCH
1. Disconnect back door key cylinder switch connector.
2. Check continuity between back door key cylinder switch terminals.
SEL315X
OK or NG
OK©Check the following.
IBack door key cylinder switch ground circuit
IHarness for open or short between smart entrance control unit and back door key cyl-
inder switch
NG©Replace back door key cylinder switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-267

Component Parts and Harness Connector
Location
NBEL0111
SEL355X
System DescriptionNBEL0112INPUTSNBEL0112S01Power is supplied at all times
Ito smart entrance control unit terminal 11
Ithrough circuit breaker
Ithrough 40A fusible link (letterflocated in the fuse and fusible link box),
Ito key switch terminal 2, and
Ito smart entrance control unit terminal 10
Ithrough 7.5A fuse [No. 24, located in the fuse block (J/B)].
Ito multi-remote control relay terminals 1, 3 and 6
Ithrough 15A fuse [No. 20, located in the fuse block (J/B)].
Ito horn relay terminals 1 and 3
Ithrough 7.5A fuse [No. 52, located in the fuse block (J/B)].
Ito horn relay terminal 6
Ithrough 10A fuse [No. 54, located in the fuse block (J/B)].
When the ignition switch is in the ACC or ON position, power is supplied to smart entrance control unit termi-
nal 21.
When the key switch is ON (ignition key is inserted in key cylinder), power is supplied
Ithrough key switch terminal 1
Ito smart entrance control unit terminal 32.
MULTI-REMOTE CONTROL SYSTEM
Component Parts and Harness Connector Location
EL-270

SEL153WB
Interior Lamp OperationNBEL0112S0202When the following input signals are both supplied:
Idoor switch CLOSED (when all the doors are closed);
Idriver's door LOCKED;
multi-remote control system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from remote
controller.
For detailed description, refer to ªINTERIOR, SPOT, VANITY MIRROR AND LUGGAGE ROOM LAMPSº (EL-
88).
Panic Alarm OperationNBEL0112S0203When key switch is OFF (when ignition key is not inserted in key cylinder), multi-remote control system turns
on and off horn and headlamp intermittently with input of PANIC ALARM signal from remote controller.
For detailed description, refer to ªTHEFT WARNING SYSTEMº (EL-297).
MULTI-REMOTE CONTROL SYSTEM
System Description (Cont'd)
EL-272

Trouble DiagnosesNBEL0115SYMPTOM CHARTNBEL0115S01NOTE:
IAlways check remote controller battery before replacing
remote controller.
IThe panic alarm operation of multi-remote control system does
not activate with the ignition key inserted in the ignition key
cylinder.
Symptom Diagnoses/service procedureReference
page
(EL- )
All function of multi-remote control system do not
operate.1. Remote controller battery check 278
2. Power supply and ground circuit for control unit check 279
3. Replace romote controller. Refer to ID Code Entry Procedure. 291
The new ID of remote controller cannot be
entered.1. Remote controller battery check 278
2. Key switch (insert) check 282
3. Door switch check 281
4. Door lock/unlock switch LH check 283
5. Power supply and ground circuit for control unit check 279
6. Replace romote controller. Refer to ID Code Entry Procedure. 291
Door lock or unlock does not function.
(If the power door lock system does not operate
manually, check power door lock system. Refer to
EL-261.)1. Replace remote controller. Refer to ID Code Entry Procedure. 291
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of remote
controller.1. Harzard reminder check 285
2. Horn reminder check*
*: Horn chirp can be activated or deactivated.
First check the horn chirp setting. Refer to ªSystem Descriptionº,
EL-270.287
3. Door switch check 281
4. Replace remote controller. Refer to ID Code Entry Procedure. 291
Interior lamp operation does not activate properly. 1. Interior room lamp operation check 288
2. Door switch check 281
3. Front LH door unlock sensor check 284
Panic alarm (horn and headlamp) does not acti-
vate when panic alarm button is continuously
pressed.1. Theft warning operation check. Refer to ªPRELIMINALY
CHECKº in ªTHEFT WARNING SYSTEMº.306
2. Key switch (insert) check 282
3. Replace remote controller. Refer to ID Code Entry Procedure. 291
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses
EL-277

KEY SWITCH (INSERT) CHECK=NBEL0115S07
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminal 32 and ground.
SEL307X
Refer to wiring diagram in EL-274.
OK or NG
OK©Key switch is OK.
NG©GO TO 2.
2 CHECK KEY SWITCH (INSERT)
Check continuity between terminals 1 and 2.
SEL308X
OK or NG
OK©Check the following.
I7.5A fuse [No. 24, located in fuse block (J/B)]
IHarness for open or short between key switch and fuse
IHarness for open or short between smart entrance control unit and key switch
NG©Replace key switch.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-282

INTERIOR ROOM LAMP OPERATION CHECK=NBEL0115S09
1 CHECK INTERIOR ROOM LAMP
Check if the interior room lamp switch is in the ªONº position and the lamp illuminates.
Does interior room lamp illuminate?
Ye s©GO TO 2.
No©Check the following.
IHarness for open or short between smart entrance control unit and interior room lamp
IInterior room lamp
2 CHECK INTERIOR ROOM LAMP CIRCUIT
When interior room lamp switch is ªDOORº position, check voltage across smart entrance control unit terminal 8 and
ground.
SEL329X
Refer to wiring diagram in EL-274.
OK or NG
OK©GO TO 3.
NG©Repair harness between smart entrance control unit and interior room lamp.
3 CHECK CONTROL UNIT OUTPUT
Push unlock button of remote controller with key removed and all doors closed, and check voltage across smart entrance
control unit terminal 8 and ground.
SEL330X
OK or NG
OK©Check system again.
NG©Replace smart entrance control unit.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-288

System DescriptionNBEL0120DESCRIPTIONNBEL0120S011. Operation FlowNBEL0120S0101
SEL334W
2. Setting The Theft Warning SystemNBEL0120S0102Initial condition
1) Close all doors.
2) Close hood and glass hatch.
Disarmed phase
When the theft warning system is in the disarmed phase, the security indicator lamp blinks every 2.6 seconds.
Pre-armed phase and armed phase
The theft warning system turns into the ªpre-armedº phase when hood, glass hatch and all doors are closed
and the doors are locked by key or multi-remote controller. (The security indicator lamp illuminates.)
After about 30 seconds, the system automatically shifts into the ªarmedº phase (the system is set). (The
security indicator lamp blinks every 2.6 seconds.)
3. Canceling The Set Theft Warning SystemNBEL0120S0103When the following 1) or 2) operation is performed, the armed phase is canceled.
1) Unlock the doors with the key or multi-remote controller.
2) Open the glass hatch with the key.
4. Activating The Alarm Operation of The Theft Warning SystemNBEL0120S0104Make sure the system is in the armed phase. (The security indicator lamp blinks every 2.6 seconds.)
When any of the following operations 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 before unlocking door with key or multi-remote control-
ler.
2) Door is unlocked without using key or multi-remote controller.
3) Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY AND GROUNDNBEL0120S07Power is supplied at all times
Ithrough 7.5A fuse [No. 24, located in the fuse block (J/B)]
Ito security indicator lamp terminal 1, and
Ito smart entrance control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied
Ithrough 7.5A fuse [No. 11, located in the fuse block (J/B)]
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
THEFT WARNING SYSTEM
System Description
EL-295

Ito smart entrance control unit terminal 33.
With the ignition switch in the ACC or ON position, power is supplied
Ithrough 10A fuse [No. 10, located in the fuse block (J/B)]
Ito smart entrance control unit terminal 21.
Ground is supplied
Ito smart entrance control unit terminal 16
Ithrough body grounds M77 and M111.
INITIAL CONDITION TO ACTIVATE THE SYSTEMNBEL0120S02The operation of the theft warning system is controlled by the doors, hood and glass hatch.
To activate the theft warning system, the smart entrance control unit must receive signals indicating the doors,
hood and glass hatch are closed and the doors are locked.
When a door is open, smart entrance control unit terminal 28, 29 or 40 receives a ground signal from each
door switch.
When a door is unlocked, smart entrance control unit terminal 26, 36 or 37 receives a ground signal from ter-
minal 4 of each door unlock sensor or terminal 1 of back door unlock sensor.
When the hood is open, smart entrance control unit terminal 27 receives a ground signal
Ifrom terminal 1 of the hood switch
Ithrough body grounds E13 and E41.
When the glass hatch is open, smart entrance control unit terminal 38 receives a ground signal
Ifrom terminal 1 of the glass hatch switch
Ithrough body grounds D210, B11 and B22.
When the doors are locked with key or multi-remote controller and none of the described conditions exist, the
theft warning system will automatically shift to armed mode.
THEFT WARNING SYSTEM ACTIVATION (WITH KEY OR REMOTE CONTROLLER USED TO
LOCK DOORS)
NBEL0120S03If the key is used to lock doors, terminal 41 receives a ground signal
Ifrom terminal 3 of the key cylinder switch LH
Ithrough back grounds M77 and M111
Ifrom terminal 1 of the back door key cylinder switch
Ithrough body grounds B11, B22 and D210.
If this signal or lock signal from remote controller is received by the smart entrance control unit, the theft
warning system will activate automatically.
Once the theft warning system has been activated, smart entrance control unit terminal 31 supplies ground to
terminal 2 of the security indicator lamp.
The security lamp will illuminate for approximately 30 seconds and then blink.
Now the theft warning system is in armed phase.
THEFT WARNING SYSTEM ALARM OPERATIONNBEL0120S04The theft warning system is triggered by
Iopening a door
Iopening the hood or the glass hatch
Iunlocking door without using the key or multi-remote controller.
Once the theft warning system is in armed phase, if the smart entrance control unit receives a ground signal
at terminal 26, 36, 37 (door unlock sensor), 28, 29, 40 (door switch), 38 (glass hatch switch) or 27 (hood
switch), the theft warning system will be triggered. The headlamps flash and the horn sounds intermittently.
Power is supplied at all times
Ithrough 7.5A fuse (No. 52, located in fuse and fusible link box)
Ito horn relay terminals 1 and 3.
Ithrough 10A fuse (No. 54, located in fuse and fusible link box)
Ito horn relay terminal 6.
When the theft warning system is triggered, ground is supplied intermittently
Ifrom terminal 4 of the smart entrance control unit
Ito headlamp relay LH and RH terminal 2 and
Ifrom terminal 19 of the smart entrance control unit
THEFT WARNING SYSTEM
System Description (Cont'd)
EL-296