System Description
POWER AND GROUND
Power is supplied at all times
Ito time control unit terminal U09 and
I to door lock switch relay terminal 1
I through 10A fuse [No. 5, located in the fuse block (J/B)], and
I to key switch terminal 2
I through 10A fuse [No. 16, located in the fuse block (J/B)].
When the key switch is ON (ignition key is inserted in key cylinder), power is supplied
I through key switch terminal 1
I to time control unit terminal U22.
When the door switch driver side is ON (door is OPEN), ground is supplied
I to time control unit terminal U06
I through door switch driver side terminal 1 and case ground.
When any of the other door switches is ON (door is OPEN), ground is supplied
I to time control unit terminal U07
I through door switch terminal 1 and case ground.
When lock/unlock switch is LOCK, ground is supplied
I to power window main switch terminal 3
I through body grounds B10 and B18.
Door lock operation signal is supplied
I through power window main switch terminal 14
I to door lock switch relay terminal 2.
With power and ground supplied, door lock switch relay is energized, and the door lock operation signal is
supplied to time control unit terminal U35.
Door unlock operation signal is supplied
I through power window main switch terminal 7
I to time control unit terminal U37.
Remote controller signal is inputted to time control unit (The antenna of the system is combined with time
control unit).
FUNCTION
Multi-remote control system has the following function.
I Door lock (and set super lock)
I Door unlock (and release super lock)
I Hazard reminder
LOCK OPERATION
To lock door by multi-remote controller, the key switch must be at OFF.
When the LOCK signal is input to time control unit (the antenna of the system is combined with time control
unit), time control unit controls to lock doors and set super lock (models with super lock).
UNLOCK OPERATION
Normal Mode
When UNLOCK signal is input to time control unit (the antenna of the system is combined with time control
unit), time control unit controls to unlock doors and release super lock (models with super lock).
Anti Hi-jack Mode
When the UNLOCK signal is input to time control unit (the antenna of the system is combined with time con-
trol unit), time control unit controls to unlock driver's door and release super lock (models with super lock).
Then, if an unlock signal is sent from the remote controller again within 5 seconds, all other doors will be
unlocked.
HAZARD REMINDER
When the doors are locked or unlocked by multi-remote controller, supply power to turn lamps hazard reminder
flashes as follows
ILock operation: Flash once
I Unlock operation: Flash twice
MULTI-REMOTE CONTROL SYSTEM
EL-202
http://vnx.su/
AUTO DOOR LOCK OPERATION
Auto lock function signal is sent for operation when any of the following signals are not sent within 5 minutes
after the unlock signal is sent from the multi-remote controller:
Iwhen door switch is turned ON for open
I when the ignition switch is turned ON
I when the lock signal is sent from the multi-remote controller
I when ignition switch is inserted in ignition key cylinder
MULTI-REMOTE CONTROLLER ID CODE ENTRY
A maximum of four remote controllers can be entered.
To enter ID code entry, the following signals must be input to the time control unit.
IIgnition switch (ON)
I Signal from remote controller
For detailed procedure, refer to ªID Code Entry Procedureº in EL-215.
MULTI-REMOTE CONTROL SYSTEM
System Description (Cont'd)
EL-203
http://vnx.su/
Trouble Diagnoses
If doors can not be unlocked by remote controller operation then the following procedure is required.
A) Unlock the vehicle by a mechanical key in the drivers door key cylinder.Note: this may cause the alarm to sound.
B) Put the key in ignition, turn to ON position for at least five seconds. Assuming the ignition key contains a valid transponder then a signal will be generated by the immobilizer which will disarm the alarm and allow
key learn mode to be entered.
C) Turn ignition OFF and wait for ten seconds.
SYMPTOM CHART
Symptom Possible cause Diagnoses/service order
No doors can be locked or
unlocked by remote control opera-
tion. 1. Remote controller battery
2. Power door lock system
3. Key switch (insert)
4. Door switch
5. Power supply circuit for time
control unit
6. Ground circuit for time control unit
7. Remote controller 1. Check remote controller battery. Refer to EL-214.
2. Check that power door lock operates properly. If
NG, check power door lock.
3. Check key switch (insert) signal at terminal
U22of
time control unit.
4. Check door switch signal at terminals
B01and
B07of time control unit (Fuse block).
5. Make sure battery voltage is present at terminal
U09of time control unit.
6. Check continuity between terminal
MM2of time con-
trol unit (Fuse block) and ground.
7. Replace remote controller. Refer to EL-215.
The new ID of remote controller
cannot be entered. 1. Remote controller battery
2. Key switch (insert)
3. Door switch
4. Driver's door unlock sensor
5. Ignition ON power supply
circuit for time control unit
6. Remote controller 1. Check remote controller battery. Refer to EL-214.
2. Check key switch (insert) signal at terminal
U22of
time control unit.
3. Check door switch signal at terminals
B01and
B07of time control unit (Fuse block).
4. Check driver's door unlock sensor signal at terminal
U35of time control unit.
5. Make sure battery voltage is present at terminal
U01of time control unit while ignition switch is in
ON position.
6. Replace remote controller. Refer to EL-215.
Refer to ªTIME CONTROL UNIT INSPECTION TABLEº on EL-214 to check the control unit signals.
NOTE:
I The unlock operation of multi-remote control system does not activate with key inserted in the ignition key
cylinder.
I The lock operation of multi-remote controller does not activate with the key inserted in the ignition key cyl-
inder or if one of the doors is opened.
MULTI-REMOTE CONTROL SYSTEM
EL-213
http://vnx.su/
ID Code Entry Procedure
Enter the identity (ID) code manually when:
Iremote controller or TCU is replaced.
I an additional remote controller is activated.
Activation of the registration mode:
The vehicle must have been unlocked by either the multi-remote controller or a transponder OK signal (TPOK) from the vehicle's
immobilizer.
Preparation: - Make sure all doors unlock.
- Make sure all multi-remote controllers to be registered are available.
- Make sure the batteries of all multi-remote controllers are in a good condition.
- Make sure all transmitting sources are out of the neighbourhood of the vehicle.
- Make sure the battery of the vehicle is in a good condition.F
Switch ignition-switch exactly six times from the ªLOCKº to the ªONº position within 10 seconds and return the ignition switch to
the ªLOCKº position (leaving the key in the ignition switch).F
After 2 seconds the registration mode is activated. The turn signal lamps will flash twice.
OK NG
Proceed with the registration mode.
NOTE
The registration mode is exited when: IThe ignition-switch is turned to the ªONº position.
I a multi-remote controller ID code had registered after 4 ID codes have been registered (then, all
of the registered ID codes are erased).
I No multi-remote controller or ignition switch input is received within 120 seconds.
Registration mode
G
Press and hold the ªUNLOCKº button of the multi-remote controller.F
NEL569
Press the ªLOCKº button 3 times.
Release the ªUNLOCKº button.
(At this time, the original (previous) ID code(s) are erased.)EIf the multi-remote controller code
is registered correctly, the turn
signal lamp will flash once.
(If 4 ID codes have been
registered, the turn signal lamp
will flash 3 times.)ENG
Do you want to register another multi-remote controller? (max. 4)
(If 4 controllers have been registered, you should turn the ignition switch to the
ON position.)
NoYe s
FOK
Turn the ignition switch to the ON position.
EIf the multi-remote controller reg-
istration is performed correctly,
the turn signal lamp will flash
twice.
(If 4 ID codes have been
registered, the turn signal lamp
will not flash.)
Take the ignition key out of the ignition switch and confirm the functioning of all
multi-remote controllers by locking and unlocking the vehicle with each of the
multi-remote controllers.OK NGF
End
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MULTI-REMOTE CONTROL SYSTEM
EL-215
http://vnx.su/
System Description
The TCU (Time Control Unit) has the following functions.
INTERIOR LAMP TIMER
The interior lamp timer is controlled by the TCU.
The TCU keeps the interior lamp illuminated for about 30 seconds when:
Ithe ignition key is turned from ªONº to ªACCº to ªLOCKº
I the driver's door is unlocked
I a door is opened and then closed while the ignition switch is in the ªOFFº position. (Interior lamp switch
in the ªDOORº position).
The timer is canceled when:
I driver's door is locked, or
I ignition switch is turned ªONº.
IGNITION KEY WARNING CHIME AND LIGHT WARNING CHIME
The ignition key and light warning chime are controlled by the TCU.
The warning chime is combined with the TCU.
The light warning chime will not sound, when ignition switch is in the ªONº or ªSTARTº position. (When power
supply exists at TCU terminal
U01.)
With ignition switch in the OFF position, driver's door open, and lighting switch in 1ST or 2ND position, warn-
ing chime will sound.
Or, with the key in the ignition switch in the ªACCº or ªOFFº position, and locking the driver's door from the
outside, the warning buzzer will sound.
REAR WINDOW DEFOGGER TIMER
The rear window defogger and door mirror defogger system are controlled by the TCU.
The rear window and door mirror defogger operate only for approximately 15 minutes.
POWER DOOR LOCK (Super Lock)
The power door lock (super lock) is controlled by the TCU.
For further information, refer to ªPOWER DOOR LOCK Ð Super Lockº (EL-179).
MULTI-REMOTE CONTROL SYSTEM
The multi-remote control system is controlled by the TCU.
When the following input signals are both supplied:
I Key switch OFF (when ignition key is not inserted in key cylinder);
I door switch CLOSED (when all the doors are closed);
The two above signals are already input into time control unit. At this point, time control unit receives a LOCK
signal from remote controller. Time control unit locks all doors and set super lock with input of LOCK signal
from remote controller.
When an UNLOCK signal is sent from remote controller once, driver's door will be unlocked and release super
lock.
Then, if an UNLOCK signal is sent from remote controller again, all other door will be unlocked.
MULTI-REMOTE CONTROLLER ID CODE ENTRY
For detailed procedure, refer to ªID Code Entry Procedureº (EL-215).
THEFT WARNING SYSTEM
The theft warning system is controlled by the TCU.
For further information, refer to ªTHEFT WARNING SYSTEMº (EL-243).
TIME CONTROL UNIT (TCU)
EL-216
http://vnx.su/
Checks
Once in Diagnostic Mode (and after identifying the last three alarm triggers in case a theft warning system is
equipped on the vehicle), the following inputs can be tested.
USER ACTIONTCU ReactionCOMPONENT TESTED
Driver's door opened from closed
(all other doors closed) Hazards flash once Driver's door open signal
Passenger or rear door opened from closed
(all other doors closed) Hazards flash once Door open signal for opened door
Driver's door locked from unlocked Hazards flash once Driver's door status signal
Passenger door locked from unlocked Hazards flash once Assist door status signal
Rear doors locked from unlocked
(with ultrasonic model) Hazards flash once Rear doors status signal
Ultrasonics cancel switch is pressed
(with ultrasonic model) Hazards flash once U/S cancel signal
Trunk or back door is opened from closed Hazards flash once Trunk open signal
Hood is opened from closed
(with ultrasonic model) Hazards flash once Hood open signal
Hazard switch is pressed from off Hazards flash once Hazard switch signal
Turn signal switch is moved to left from off Hazards flash once Left turn signal
Turn signal switch is moved to right from off Hazards flash once Right turn signal
Key turned to lock position in door Hazards flash once * Key cylinder lock switch signal
Lighting switch turned 1st position or 2nd
position from off Hazards flash once Tail lamp signal
Key put in ignition cylinder from out Hazards flash once Key in detect signal
Central unlock switch is pressed Hazards flash once Central unlock/Trunk release signal
*) Hazards may flash a second time because of Driver's door status signal change. The min. delay time between flash actions is 100 ms.
In case the system does not operate as described above, check the concerned circuit for open or short.
After completion, the Diagnostic Mode can be switched off by pressing the rear defogger switch or by turning
the ignition to ªONº. The hazard lamp will flash at 3 Hz for 3 seconds to confirm that Diagnostic Mode has
been switched off.
TIME CONTROL UNIT (TCU)
Trouble Diagnosis (Cont'd)
EL-219
http://vnx.su/
qA
CHECK COMMUNICATION LINE SHORT
CIRCUIT.
1. Disconnect ECM connector and NATSIMMU connector.
2. Check continuity between NATS IMMU terminal q
1and ground.
Continuity should not exist.
3. Turn ignition switch to ON.
4. Check voltage between IMMU terminal q
1and ground.
No voltage should exist.
OK
ENG Repair harness.
Ref. part No. C4
Check the signal from ECM to NATS
IMMU.
1. Check the signal between ECM termi-
nal
410(TD27Ti models) or q55
(ZD30DDTi models) and ground with
CONSULT-II or oscilloscope when igni-
tion switch is turned ON.
2. Some signals can be detected during 750 msec. just after ignition switch is
turned ªONº.
OK
ENG ECM is malfunctioning.
1. Replace ECM.
Ref part No. B
2. Perform initialization procedure, refer to
ªCONSULT-II operation
manual NATSº.
NATS IMMU is malfunctioning.
1. Replace NATS IMMU.Ref. part No. A
2. Perform initialization with CONSULT-II. For the initialization procedure, refer to
ªCONSULT-II operation manual NATSº.
YEL326D
NEL543
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-235
http://vnx.su/
SETTING THE THEFT WARNING SYSTEM
Initial condition
(1) Close all doors.
(2) Close hood.
Pre-armed phase and armed phase
The theft warning system turns into the ªpre-armedº phase when hood and all doors are closed and locked by
key or multi-remote controller. (The security indicator lamp blinks intermittently for 30 seconds.)
After about 30 seconds, the system automatically shifts into the ªarmedº phase (the system is set).
CANCELING THE SET THEFT WARNING SYSTEM
When the following (a) or (b) operation is performed, the armed phase is canceled.
(a) Unlock the doors with the multi-remote controller.
(b) Insert key in ignition key cylinder and turn it to ON. Then NATS IMMU will send a disarm signal to the timecontrol unit.
ACTIVATING THE ALARM OPERATION OF THE THEFT WARNING SYSTEM
Make sure the system is in the armed phase. When the following operation (a) (b) (c) or (d) is performed, the
system sounds the horns and flashes the hazard lamp for about 30 seconds.
(a) Engine hood or any door is opened before unlocking door with the multi-remote controller.
(b) A door is unlocked without using the multi-remote controller.
(c) The ignition is switched ON without using a NATS registered key.
(d) The ultrasonic sensing is triggered.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times.
IThrough 10A fuse [No.
16, located in the fuse block (J/B)]
I to combination meter (security indicator lamp) terminal q
27.
I through 10A fuse [No.
5, located in the fuse block (J/B)]
I to time control unit terminal
U09.
With the ignition switch in the ON or START position, power is supplied
I through 10A fuse [No.
26, located in the fuse block (J/B)]
I to time control unit terminal
U01.
Ground is supplied
I to time control unit terminal
U16
Ithrough body groundsF36andF47(LHD models), orM33andM754(RHD models).
INITIAL CONDITION TO ARM THE SYSTEM
The operation of the theft warning system is controlled by all the doors and hood.
To activate the theft warning system, the time control unit must receive signals indicating all the doors and
hood are closed and the doors are locked.
When a door is open, time control unit terminal
U06orU07receives a ground signal from each door switch.
When a door is unlocked, time control unit terminal
U25,U35orU36receives a ground signal from each door
unlock sensor.
When the hood is open, time control unit terminal
U32receives a ground signal
I from the hood switch
I through body grounds
M33andM754.
THEFT WARNING SYSTEM
System Description (Cont'd)
EL-245
http://vnx.su/