2001 INFINITI QX4 lock

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

POWER SUPPLY AND GROUND CIRCUIT CHECK=NBEL0115S04
1 CHECK MAIN POWER SUPPLY CIRCUIT FOR CONTROL UNIT
1. Disconnect connector from control unit.
2. Check voltage between smart entrance control unit terminal 10 or 11 and ground.
SEL320X
Refer to wiring diagram in EL-274.
OK or NG
OK©GO TO 2.
NG©Check the following.
I40A fusible link (letterf, located in fuse and fusible link box)
I7.5A fuse [No. 24, located in fuse block (J/B)]
IM145 circuit breaker
IHarness for open or short between smart entrance control unit and fuse
2 CHECK IGNITION SWITCH ªACCº CIRCUIT
1. Disconnect smart entrance control unit connector.
2. Check voltage between control unit terminal 21 and ground while ignition switch is ªACCº.
SEL321X
Refer to wiring diagram in EL-274.
OK or NG
OK©GO TO 3.
NG©Check the following.
I10A fuse [No. 10, located in fuse block (J/B)]
IHarness for open or short between smart entrance control unit and fuse
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-279

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

DOOR LOCK/UNLOCK SWITCH LH CHECK=NBEL0115S10
1 CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
1. Disconnect smart entrance control unit connector.
2. Check continuity between control unit terminal 23 or 35 and ground.
SEL309X
Refer to wiring diagram in EL-274.
OK or NG
OK©Door lock/unlock switch is OK.
NG©GO TO 2.
2 CHECK DOOR LOCK/UNLOCK SWITCH
1. Disconnect door lock/unlock switch connector.
2. Check continuity between each door lock/unlock switch terminals.
IPower window main switch (Door lock/unlock switch LH)
SEL310X
OK or NG
OK©Check the following.
IGround circuit for door lock/unlock switch
IHarness for open or short between door lock/unlock switch and smart entrance control
unit connector
NG©Replace door lock/unlock switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-283

FRONT LH DOOR UNLOCK SENSOR CHECK=NBEL0115S06
1 CHECK FRONT LH DOOR UNLOCK SENSOR INPUT SIGNAL
Check voltage between smart entrance control unit terminal 36 and ground.
SEL323X
Refer to wiring diagram in EL-275.
OK or NG
OK©Door unlock sensor is OK.
NG©GO TO 2.
2 CHECK FRONT LH DOOR UNLOCK SENSOR
1. Disconnect front LH door unlock sensor connector.
2. Check continuity between door unlock sensor terminals.
SEL324X
OK or NG
OK©Check the following.
IDoor unlock sensor ground circuit
IHarness for open or short between smart entrance control unit and door unlock sensor
NG©Replace door unlock sensor.
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-284

4 CHECK POWER SUPPLY FOR MULTI-REMOTE CONTROL RELAY
1. Disconnect multi-remote control relay connector.
2. Check voltage between terminal 1 and ground.
SEL326X
OK or NG
OK©GO TO 5.
NG©Check the following.
I15A fuse [No. 20, located in fuse block (J/B)]
IHarness for open or short between multi-remote control relay and fuse
5 CHECK MULTI-REMOTE CONTROL RELAY CIRCUIT
1. Disconnect multi-remote control relay connector.
2. Check voltage between terminals 3 and 5.
3. Check voltage between terminals 6 and 7.
SEL327X
OK or NG
OK©Check harness for open or short between smart entrance control unit and multi-remote
control relay.
NG©Check the following.
IHarness for open or short between multi-remote control relay and fuse
IHarness for open or short between multi-remote control relay and turn signal lamps
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-286

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