Infiniti QX4. Electrical System (2003 year). Manual - part 27

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

䊳

GO TO 2.

䊳

Replace smart entrance control unit. (Before replacing smart entrance control unit, per-
form “DOOR LOCK/UNLOCK SWITCH CHECK”.)

IDX

POWER DOOR LOCK

Trouble Diagnoses (Cont’d)

EL-421

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

䊳

Check harness for open or short between smart entrance control unit connector and door
lock actuator.

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

IDX

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

—

S MODE

Twice

—

MODE 3

—

MODE 4

Twice

—

Once

—

MODE 5

Twice

Once

—

MODE 6

—

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

IDX

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

IDX

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

IDX

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

IDX

REMOTE KEYLESS ENTRY SYSTEM

Wiring Diagram — KEYLES — (Cont’d)

EL-431

SEL670Y

CONSULT-II Inspection Procedure

NBEL0395

“MULTI REMOTE ENT”

NBEL0395S01

Turn ignition switch “OFF”.

Connect “CONSULT-II” and “CONSULT-II CONVERTER” to
the data link connector.

SKIA3098E

Turn ignition switch “ON”.

Touch “START (NISSAN BASED VHCL)”.

SEL398Y

Touch “SMART ENTRANCE”.
If “SMART ENTRANCE” is not indicated, go to GI-42, “CON-
SULT-II Data Link Connector (DLC) Circuit”.

SEL751Y

Touch “MULTI REMOTE ENT”.

SEL274W

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.

IDX

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

436

2. Power supply and ground circuit for smart entrance control
unit check

437

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.

449

The new ID of keyfob cannot be entered.

1. Keyfob battery and function check

436

2. Key switch (insert) check

441

3. Door switch check

439

4. Door lock/unlock switch LH check

442

5. Power supply and ground circuit for smart entrance control
unit check

437

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.

449

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

436

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.

449

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

436

2. Hazard reminder check

443

3. Horn reminder check*
*: Horn chirp can be activated or deactivated.
First check the horn chirp setting. Refer to “System Description”,
EL-424.

444

4. Door switch check

439

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.

449

Interior room lamp operation do not activate prop-
erly.

1. Interior room lamp operation check

446

2. Door switch check

439

Panic alarm (horn and headlamp) does not acti-
vate when panic alarm button is continuously
pressed.

1. Keyfob battery and function check

436

2. Theft warning operation check. Refer to “PRELIMINARY
CHECK” in “VEHICLE SECURITY SYSTEM”.

467

3. Key switch (insert) check

441

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.

449

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

436

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.

449

IDX

REMOTE KEYLESS ENTRY SYSTEM

Trouble Diagnoses (Cont’d)

EL-435

KEYFOB BATTERY AND FUNCTION CHECK

=NBEL0397S02

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

䊳

GO TO 2.

䊳

Replace battery. (Refer to EL-451)

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

䊳

Keyfob is OK. Further inspection is necessary. Refer to “SYMPTOM CHART”, EL-434.

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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