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.
SEL312X
Refer to wiring diagram in EL-258.
OK or NG
OK©Door key cylinder switch LH is OK.
NG©GO TO 2.
2 CHECK DOOR KEY CYLINDER SWITCH
1. Disconnect door key cylinder switch connector.
2. Check continuity between door key cylinder switch terminals.
SEL313X
OK or NG
OK©Check the following.
IDoor key cylinder switch LH ground circuit
IHarness for open or short between smart entrance control unit and door key cylinder
switch LH
NG©Replace door key cylinder switch LH.
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-266

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.
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POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-267

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
Refer to wiring diagram in EL-259.
OK or NG
OK©GO TO 2.
NG©Replace smart entrance control unit. (Before replacing smart entrance control unit, per-
form ªDOOR LOCK/UNLOCK SWITCH CHECKº.)
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-268

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 short between smart entrance control unit connector and door
lock actuator.
NG©Replace door lock actuator.
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POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-269

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

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:
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MULTI-REMOTE CONTROL SYSTEM
System Description (Cont'd)
EL-271

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

SchematicNBEL0113
MEL853L
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MULTI-REMOTE CONTROL SYSTEM
Schematic
EL-273

Wiring Diagram Ð MULTI ÐNBEL0114FIG. 1NBEL0114S01
MEL854L
MULTI-REMOTE CONTROL SYSTEM
Wiring Diagram Ð MULTI Ð
EL-274

FIG. 2NBEL0114S02
MEL855L
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MULTI-REMOTE CONTROL SYSTEM
Wiring Diagram Ð MULTI Ð (Cont'd)
EL-275