2001 INFINITI QX4 Factory Service Manual

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Page 1449 of 2395

INFINITI QX4 2001 Factory Service Manual KEY SWITCH (INSERT) CHECK=NBEL0110S06
1 CHECK KEY SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit terminal 32 and ground.
SEL307X
Refer to wiring diagram in EL-257.
OK or NG
OK©

Page 1450 of 2395

INFINITI QX4 2001 Factory Service Manual DOOR LOCK/UNLOCK SWITCH CHECK=NBEL0110S03
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 a

Page 1451 of 2395

INFINITI QX4 2001 Factory Service Manual FRONT DOOR KEY CYLINDER SWITCH CHECK=NBEL0110S07
1 CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK/UNLOCK SIGNAL)
Check voltage between smart entrance control unit terminals 30 or 41 and ground.
SEL

Page 1452 of 2395

INFINITI QX4 2001 Factory Service Manual 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.

Page 1453 of 2395

INFINITI QX4 2001 Factory Service Manual DOOR LOCK ACTUATOR CHECK=NBEL0110S04
1 CHECK DOOR LOCK ACTUATOR CIRCUIT
Check voltage for door lock actuator.
IDoor lock actuator front LH
SEL316X
IDoor lock actuator front RH, rear and back
SEL317X
R

Page 1454 of 2395

INFINITI QX4 2001 Factory Service Manual 2 CHECK DOOR LOCK ACTUATOR
1. Disconnect door lock actuator connector.
2. Apply 12V direct current to door lock actuator and check operation.
SEL318X
SEL319X
OK or NG
OK©Check harness for open or sho

Page 1455 of 2395

INFINITI QX4 2001 Factory Service Manual Component Parts and Harness Connector
Location
NBEL0111
SEL355X
System DescriptionNBEL0112INPUTSNBEL0112S01Power is supplied at all times
Ito smart entrance control unit terminal 11
Ithrough circuit b

Page 1456 of 2395

INFINITI QX4 2001 Factory Service Manual When the front door switch LH is OPEN, ground is supplied
Ito smart entrance control unit terminal 29
Ithrough front door switch LH terminal 1
Ito front door switch LH terminal 2
Ithrough body grounds

When the front door switch LH is OPEN, ground is supplied
Ito smart entrance control unit terminal 29
Ithrough front door switch LH terminal 1
Ito front door switch LH terminal 2
Ithrough body grounds B11, B22 and D210.
When the front door switch RH is OPEN, ground is supplied
Ito smart entrance control unit terminal 40
Ithrough front door switch RH body ground.
When the other door switches are OPEN, ground is supplied
Ito smart entrance control unit terminal 28
Ithrough other door switches body grounds.
Remote controller signal is inputted to smart entrance control unit (The antenna of the system is combined
with smart entrance control unit).
OPERATIONNBEL0112S03The multi-remote control system controls operation of the
Ipower door lock
Iinterior lamp
Ipanic alarm
Ihazard and horn reminder
OPERATED PROCEDURENBEL0112S02Power Door Lock OperationNBEL0112S0201Smart entrance control unit receives a LOCK signal from remote controller. Smart entrance control unit locks
all doors with input of LOCK signal from remote controller.
When an UNLOCK signal is sent from remote controller once, driver's door will be unlocked.
Then, if an UNLOCK signal is sent from remote controller again within 5 seconds, all other door will be
unlocked.
Hazard and Horn ReminderNBEL0112S0204When smart entrance control unit receives LOCK or UNLOCK signal from remote controller with all doors
closed, ground is supplied
Ito multi-remote control relay terminal 2
Ithrough smart entrance control unit terminal 7, and
Ito horn relay terminal 2
Ithrough smart entrance control unit terminal 19
Multi-remote control relay and horn relay are now energized, and hazard warning lamp flashes and horn
sounds as a reminder.
The hazard and horn reminder has a horn chirp mode (C mode) and a non-horn chirp mode (S mode).
Operating function of hazard and horn reminder
Horn chirp mode (C mode) Non-horn chirp mode (S mode)
Hazard warning lamp
flashHorn soundHazard warning lamp
flashHorn sound
Lock Twice Once Twice Ð
Unlock Once Ð Ð Ð
How to change hazard and horn reminder mode
When LOCK and UNLOCK signals are sent from the remote controller for more than 2 seconds at the same
time, the hazard and horn reminder mode is changed and hazard warning lamp flashes and horn sounds as
follows:
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
MULTI-REMOTE CONTROL SYSTEM
System Description (Cont'd)
EL-271

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