Infiniti QX4. Electrical System (2003 year). Manual — part 27
2
CHECK DOOR LOCK ACTUATOR CIRCUIT
쐌
Door lock actuator front LH
Check voltage between smart entrance control unit harness connector M123 terminal 54 (L), 55 (W/PU) and ground.
SEL014Y
쐌
Door lock actuator front RH and rear
Chcek voltage between smart entrance control unit harness connector M123 terminal 54 (L), 56 (Y/B) and ground.
SEL015Y
Refer to wiring diagram in EL-405.
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Replace smart entrance control unit. (Before replacing smart entrance control unit, per-
form “DOOR LOCK/UNLOCK SWITCH CHECK”.)
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POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-421
3
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
䊳
Check harness for open or short between smart entrance control unit connector and door
lock actuator.
NG
䊳
Replace door lock actuator.
POWER DOOR LOCK
Trouble Diagnoses (Cont’d)
EL-422
Component Parts and Harness Connector
Location
NBEL0391
SEL676Y
System Description
NBEL0392
INPUTS
NBEL0392S01
Power is supplied at all times
쐌
to smart entrance control unit terminal 49 and
쐌
to key switch terminal 2
쐌
through 7.5A fuse [No. 24, located in the fuse block (J/B)].
쐌
to smart entrance control unit terminal 51
쐌
through circuit breaker terminals 2 and 1 and
쐌
through 40A fusible link (letter f, located in fuse and fusible link box).
When the key switch is ON (ignition key is inserted in key cylinder), power is supplied
쐌
through key switch terminal 1
쐌
to smart entrance control unit terminal 25.
When the front door switch LH is ON (door is OPEN), ground is supplied
쐌
to smart entrance control unit terminal 1
쐌
through front door switch LH terminal 1
쐌
to front door switch LH terminal 2
쐌
through body grounds B11, B22 and D210.
When the front door switch RH is ON (door is OPEN), ground is supplied
쐌
to smart entrance control unit terminal 2
쐌
through front door switch RH terminal 1
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REMOTE KEYLESS ENTRY SYSTEM
Component Parts and Harness Connector Location
EL-423
쐌
to front door switch RH terminal 2
쐌
through body grounds B55 and B75.
When the all doors switches are ON (door is OPEN), ground is supplied
쐌
to smart entrance control unit terminal 3
쐌
through front door switches terminal 3
쐌
to front door switches case grounds, and
쐌
through rear door switches terminal 1
쐌
to rear door switchs case grounds, and
쐌
through back door switch terminal 2
쐌
to back door switch terminal 1
쐌
through body grounds B11, B22 and D210.
When door lock and unlock switch LH is LOCK or UNLOCK, ground is supplied
쐌
to smart entrance control unit terminal 33
쐌
through power window main switch terminal 14
쐌
to power window main switch terminal 17
쐌
through body grounds M77 and M111.
When door lock and unlock switch RH is LOCK or UNLOCK, ground is supplied
쐌
to smart entrance control unit terminal 33
쐌
through front power window switch RH terminal 16
쐌
to front power window switch RH terminal 11
쐌
through body grounds M4, M66 and M147.
Remote controller signal is inputted to smart entrance control unit (The antenna of the system is combined
with smart entrance control unit).
OPERATION
NBEL0392S02
The remote keyless entry system controls operation of the
쐌
power door lock
쐌
auto door lock
쐌
interior lamp
쐌
panic alarm
쐌
hazard and horn reminder
쐌
power window opener
OPERATED PROCEDURE
NBEL0392S03
Power Door Lock Operation
NBEL0392S0301
Smart entrance control unit receives a LOCK signal from keyfob. Smart entrance control unit locks all doors
with input of LOCK signal from keyfob.
When an UNLOCK signal is sent from keyfob once, driver’s door will be unlocked.
Then, if an UNLOCK signal is sent from keyfob again within 5 seconds, all other door will be unlocked.
Select unlock mode can be changed by CONSULT-II (EL-433).
Auto Door Lock Operation
NBEL0392S0308
Smart entrance control unit will lock all the doors 5 minutes after receiving unlock signal from keyfob.
When any of the following operations is performed within 5 minutes, the auto lock operation is cancelled.
쐌
Ignition switch is ON position.
쐌
Open the doors.
쐌
Received lock signal from keyfob.
Auto door lock mode can be changed by CONSULT-II (EL-433).
Hazard and Horn Reminder
NBEL0392S0302
Power is supplied at all times
쐌
to horn relay terminals 1 and 3
쐌
through 7.5A fuse (No. 52, located in the fuse and fusible link box), and
쐌
to horn relay terminal 6
쐌
through 10A fuse (No. 54, located in the fuse and fusible link box)
REMOTE KEYLESS ENTRY SYSTEM
System Description (Cont’d)
EL-424
When smart entrance control unit receives LOCK or UNLOCK signal from remote controller with all doors
closed, ground is supplied
쐌
to horn relay terminal 2
쐌
through smart entrance control unit terminal 42, and
쐌
to smart entrance control unit terminals 47 and 48 from hazard warning lamp system.
Horn relay are now energized, and hazard warning lamp flashes and horn sounds as a reminder.
The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).
Operating function of hazard and horn reminder
Lock
Unlock
Hazard warning lamp
flash
Horn sound
Hazard warning lamp
flash
Horn sound
C MODE
Twice
Once
Once
—
S MODE
Twice
—
—
—
MODE 3
—
—
—
—
MODE 4
Twice
—
Once
—
MODE 5
Twice
Once
—
—
MODE 6
—
Once
Once
—
How to change hazard and horn reminder mode
With CONSULT-II
Hazard and horn reminder can be changed by CONSULT-II (EL-433).
Without CONSULT-II
When LOCK and UNLOCK signals are sent from the keyfob 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:
SEL153WA
NOTE:
Reminder mode setting cannot be changed without CONSULT-II for MODES 3,4, 5, and 6. However, C and
S MODES can be changed without CONSULT-II.
Interior Lamp Operation
NBEL0392S0303
When the following input signals are both supplied:
쐌
door switch CLOSED (when all the doors are closed);
쐌
driver’s door LOCKED;
remote keyless entry system turns on interior lamp (for 30 seconds) with input of UNLOCK signal from key-
fob.
For detailed description, refer to “INTERIOR, SPOT, VANITY MIRROR AND LUGGAGE ROOM LAMPS” (EL-
103).
Panic Alarm Operation
NBEL0392S0304
When key switch is OFF (when ignition key is not inserted in key cylinder), remote keyless entry system turns
horn and headlamp on and off intermittently with input of PANIC ALARM signal from keyfob.
The alarm automatically turns off after 25 seconds or when smart entrance control unit receives any signal
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REMOTE KEYLESS ENTRY SYSTEM
System Description (Cont’d)
EL-425
from keyfob.
For detailed description, refer to “VEHICLE SECURITY SYSTEM” (EL-456).
The panic alarm button’s pressing time on keyfob can be changed with CONSULT-II (EL-433).
Power Window Opener Operation
NBEL0392S0307
The front power windows open when the unlock button on keyfob is activated and kept pressed for more than
3 seconds with the ignition key OFF. The windows keep opening if the unlock button is continuously pressed.
The power window opening stops when the following operations are carried out:
쐌
When the unlock button is kept pressed more than 15 seconds.
쐌
When the ignition switch is turned ON while the power window opening is operated.
쐌
When the unlock button is released.
The unlock button’s pressing time can be changed with CONSULT-II (EL-433).
Door Lock/Unlock and front power window down signal is sent from smart entrance control unit to power win-
dow main switch with power window serial link communication line. Refer to “POWER WINDOW SERIAL LINK”
(EL-379). Signals are supplied
쐌
through smart entrance control unit terminal 33
쐌
to power window main switch terminal 14 and
쐌
to front power window switch RH terminal 16.
REMOTE KEYLESS ENTRY SYSTEM
System Description (Cont’d)
EL-426
Schematic
NBEL0393
MEL355Q
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REMOTE KEYLESS ENTRY SYSTEM
Schematic
EL-427
Wiring Diagram — KEYLES —
NBEL0394
FIG. 1
NBEL0394S01
MEL356Q
REMOTE KEYLESS ENTRY SYSTEM
Wiring Diagram — KEYLES —
EL-428
FIG. 2
NBEL0394S02
MEL404R
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REMOTE KEYLESS ENTRY SYSTEM
Wiring Diagram — KEYLES — (Cont’d)
EL-429
FIG. 3
NBEL0394S03
MEL455O
REMOTE KEYLESS ENTRY SYSTEM
Wiring Diagram — KEYLES — (Cont’d)
EL-430
FIG. 4
NBEL0394S05
MEL358Q
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REMOTE KEYLESS ENTRY SYSTEM
Wiring Diagram — KEYLES — (Cont’d)
EL-431
SEL670Y
CONSULT-II Inspection Procedure
NBEL0395
“MULTI REMOTE ENT”
NBEL0395S01
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)”.
SEL398Y
5.
Touch “SMART ENTRANCE”.
If “SMART ENTRANCE” is not indicated, go to GI-42, “CON-
SULT-II Data Link Connector (DLC) Circuit”.
SEL751Y
6.
Touch “MULTI REMOTE ENT”.
SEL274W
7.
Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” and “WORK SUPPORT”
are available.
REMOTE KEYLESS ENTRY SYSTEM
CONSULT-II Inspection Procedure
EL-432
CONSULT-II Application Items
NBEL0457
“MULTI REMOTE ENT”
NBEL0457S01
Data Monitor
NBEL0457S0101
Monitored Item
Description
IGN ON SW
Indicates [ON/OFF] condition of ignition switch in ON position.
ACC ON SW
Indicates [ON/OFF] condition of ignition switch in ACC position.
DOOR SW-RR
Indicates [ON/OFF] condition of rear door switch.
KEY ON SW
Indicates [ON/OFF] condition of key switch.
DOOR SW-DR
Indicates [ON/OFF] condition of front door switch LH.
DOOR SW-AS
Indicates [ON/OFF] condition of door switch RH.
LOCK SW DR/AS
Indicates [ON/OFF] condition of lock signal from lock/unlock switch LH and RH.
UNLK SW DR/AS
Indicates [ON/OFF] condition of unlock signal from lock/unlock switch LH and RH.
KEY CYL LK-SW
Indicates [ON/OFF] condition of lock signal from key cylinder switch.
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.
PANIC BTN
Indicates [ON/OFF] condition of panic signal from keyfob.
UN BUTTON ON
Indicates [ON/OFF] condition of unlock switch form keyfob.
LK/UN BTN ON
Indicates [ON/OFF] condition of lock/unlock signal at the same time 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
NBEL0457S0102
Test Item
Description
INT/IGN ILLUM
This test is able to check interior lamp and ignition key hole illumination operation. The interior
lamp and ignition key hole illumination are turned on when “ON” on CONSULT-II screen is
touched.
HAZARD
This test is able to check hazard reminder operation. The hazard lamp turns on when “ON” on
CONSULT-II screen is touched.
TRUNK OUTPUT
This test is able to check trunk lid opener actuator operation. The trunk is unlocked when “ON”
on CONSULT-II screen is touched.
HORN
This test is able to check panic alarm and horn reminder operations. The alarm activate for 0.5
seconds after “ON” on CONSULT-II screen is touched.
HEAD LAMP
This test is able to check headlamps panic alarm operation. The headlamp illuminates for 0.5
seconds after “ON” on CONSULT-II screen is touched.
PW REMOTE DOWN SET
This test is able to check power window open operation. The front power windows activate for
10 seconds after “ON” on CONSULT-II screen is touched.
NOTE:
Even though TRUNK OUTPUT is actually displayed on the CONSULT-II screen, it is not equipped, therefore, they cannot be activated.
Work Support
NBEL0457S0103
Test Item
Description
REMO CONT ID CONFIR
It can be checked whether keyfob ID code is registered or not in this mode.
REMO CONT ID REGIST
Keyfob ID code can be registered.
REMO CONT ID ERASUR
Keyfob ID code can be erased.
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REMOTE KEYLESS ENTRY SYSTEM
CONSULT-II Application Items
EL-433
Test Item
Description
MULTI ANSWER BACK SET
Hazard and horn reminder mode can be changed with this mode. Selects hazard and horn
reminder mode among six steps (EL-424).
AUTO LOCK SET
Auto door lock mode can be selected among the following periods:
쐌
MODE 1 (5 min.)/MODE 2 (OFF-Mode)/MODE 3 (1 min.)
PANIC ALARM SET
The panic alarm button’s pressing time on keyfob can be selected among the following periods:
쐌
MODE 1 (0.5 sec.)/MODE 2 (OFF-Mode)/MODE 3 (1.5 sec.)
TRUNK OPENER
The trunk lid opener button’s pressing time on keyfob can be selected among the following peri-
ods:
쐌
MODE 1 (0.5 sec.)/MODE 2 (OFF-Mode)/MODE 3 (1.5 sec.)
PW DOWN SET
The unlock button’s pressing time on keyfob can be selected among the following periods:
쐌
MODE 1 (3 sec.)/MODE 2 (OFF-Mode)/MODE 3 (5 sec.)
NOTE:
Even though TRUNK OPENER is actually displayed on the CONSULT-II screen, it is not equipped, therefore, they cannot be activated.
Trouble Diagnoses
NBEL0397
SYMPTOM CHART
NBEL0397S01
NOTE:
쐌
Always check keyfob battery before replacing keyfob.
쐌
The panic alarm operation of remote keyless entry system
does not activate with the ignition key inserted in the ignition
key cylinder.
Symptom
Diagnoses/service procedure
Reference
page
(EL-
)
All functions of remote keyless entry system do
not operate.
1. Keyfob battery and function check
2. Power supply and ground circuit for smart entrance control
unit check
3. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
The new ID of keyfob cannot be entered.
1. Keyfob battery and function check
2. Key switch (insert) check
3. Door switch check
4. Door lock/unlock switch LH check
5. Power supply and ground circuit for smart entrance control
unit check
6. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
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-410)
1. Keyfob battery and function check
2. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
REMOTE KEYLESS ENTRY SYSTEM
CONSULT-II Application Items (Cont’d)
EL-434
Symptom
Diagnoses/service procedure
Reference
page
(EL-
)
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of key-
fob.
1. Keyfob battery and function check
2. Hazard reminder check
3. Horn reminder check*
*: Horn chirp can be activated or deactivated.
First check the horn chirp setting. Refer to “System Description”,
EL-424.
4. Door switch check
5. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
Interior room lamp operation do not activate prop-
erly.
1. Interior room lamp operation check
2. Door switch check
Panic alarm (horn and headlamp) does not acti-
vate when panic alarm button is continuously
pressed.
1. Keyfob battery and function check
2. Theft warning operation check. Refer to “PRELIMINARY
CHECK” in “VEHICLE SECURITY SYSTEM”.
3. Key switch (insert) check
4. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
Power window opener operation does not function.
(If the power window system does not operate
properly, check power window system. Refer to
EL-387.)
1. Keyfob battery and function check
2. Replace keyfob. Refer to ID Code Entry Procedure.
NOTE: If the result of keyfob function check with CONSULT-II is
OK, keyfob is not malfunctioning.
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REMOTE KEYLESS ENTRY SYSTEM
Trouble Diagnoses (Cont’d)
EL-435
KEYFOB BATTERY AND FUNCTION CHECK
=NBEL0397S02
1
CHECK KEYFOB BATTERY
Remove battery (refer to EL-451) and measure voltage across battery positive and negative terminals, (+) and (−).
Voltage [V]:
2.5 - 3.0
NOTE:
Keyfob does not function if battery is not set correctly.
SEL237W
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Replace battery. (Refer to EL-451)
2
CHECK KEYFOB FUNCTION
With CONSULT-II
Check keyfob function (“LK BUTTON/SIG”, “UN BUTTON/SIG”, “PANIC BTN”, “UN BUTTON ON” and “LK/UN BTN ON”)
in “DATA MONITOR” mode with CONSULT-II.
SEL423Y
NOTE:
Even though TRUNK BTN/SIG is actually displayed on the CONSULT-II screen, it is not equipped, therefore, they cannot
be activated.
OK or NG
OK
䊳
Keyfob is OK. Further inspection is necessary. Refer to “SYMPTOM CHART”, EL-434.
NG
䊳
Replace keyfob. Refer to ID Code Entry Procedure. (EL-447)
REMOTE KEYLESS ENTRY SYSTEM
Trouble Diagnoses (Cont’d)
EL-436
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