2002 NISSAN TERRANO Service Repair Manual

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 controller1. Check remote controller battery. Refer to EL-178.
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-179.
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 controller1. Check remote controller battery. Refer to EL-178.
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-179.
Refer to ªTIME CONTROL UNIT INSPECTION TABLEº on EL-178 to check the control unit signals.
NOTE:
IThe unlock operation of multi-remote control system does not activate with key inserted in the ignition key
cylinder.
IThe 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-177

TIME CONTROL UNIT INSPECTION TABLE
Terminal
No.Wire
colorConnections Operated conditionVoltage (V)
(approximate
values)
U01 Ð Ignition switch (via ignition relay) Ignition key ªONº position 12V
U06
(B07)Ð Driver door switch OFF (Closed),ON (Open) 12V,0V
U07
(B01)Ð All door switches OFF (Closed),ON (Open) 12V,0V
U08 Ð Power source (C/B) Ð 12V
U09 Ð Power source (Fuse) Ð 12V
U16 Ð Ground Ð 12V
U22 BRIgnition key switch
(Insert)Key inserted,key removed from ignition key cylinder 12V,0V
U25 Y/LRear door unlock
sensorsRear doors: Locked,Unlocked 0V,12V
U35 Y/B Driver door unlock sensor Driver door: Locked,Unlocked 0V,12V
U36 Y/L Passenger door unlock sensor Passenger door: Locked,Unlocked 0V,12V
REMOTE CONTROLLER BATTERY CHECK
Remove battery and measure voltage across battery positive and
negative terminals,!and@.
Then, use the 300Wresistor as shown in figure.
Measuring terminal
Standard
value
!@
Battery positive terminal!Battery negative [email protected] - 3.0V
Note:
Remote controller does not function if battery is not set cor-
rectly.
SEL672U
MULTI-REMOTE CONTROL SYSTEM
Trouble Diagnoses (Cont'd)
EL-178

ID Code Entry Procedure
Enter the identity (ID) code manually when:
Iremote controller or TCU is replaced.
Ian 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.
OKNG
Proceed with the registration mode.
NOTE
The registration mode is exited when:IThe ignition-switch is turned to the ªONº position.
Ia multi-remote controller ID code had registered after 4 ID codes have been registered (then, all
of the registered ID codes are erased).
INo 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
H
H
H
H
H
H
H
H
MULTI-REMOTE CONTROL SYSTEM
EL-179

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
Ithe driver's door is unlocked
Ia 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:
Idriver's door is locked, or
Iignition 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
inside, 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-145).
MULTI-REMOTE CONTROL SYSTEM
The multi-remote control system is controlled by the TCU.
When the following input signals are both supplied:
IKey switch OFF (when ignition key is not inserted in key cylinder);
Idoor 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-179).
THEFT WARNING SYSTEM
The theft warning system is controlled by the TCU.
For further information, refer to ªTHEFT WARNING SYSTEMº (EL-209).
TIME CONTROL UNIT (TCU)
EL-180

FUNCTION
IThe TCU has the following control functions.
Item Details of control
Direction indicatorsSwitches the director indicators (Left, Right or All) when the combination switch or hazard
switch is operated.
Light warning chimeSounds warning chime when driver's door is opened with light switch in the 1st or 2nd
position and ignition switch ªOFFº.
Ignition key warning chimeSounds warning chime when driver's door is opened with key in ignition and the driver
door lock knob is moved from the ªunlockº position to the ªlockº position.
Rear window defogger timerTurn off rear window defogger and door mirror heater, if equipped, about 15 minutes
after the rear window defogger switch is turned ªONº.
Battery saverShuts off interior lamp in 30 minutes if any door is left open when ignition switch is
ªOFFº. The battery saver will reset if ignition switch is cycled or any door is opened or
closed.
Interior lamp timerKeep interior lamp illuminated for about 30 seconds when:
Idriver's door is unlocked,
Ithe ignition is switched off,
Idriver's door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:
Idriver's door is locked, or
Iignition switch is turned ªONº.
Theft warning
systemNormal operationMonitors doors, hood, boot lid, door locks, volumetric sensors (if not excluded) and igni-
tion when armed.
Flashes the direction indicators and sounds the horn for 30 seconds in case one of the
monitored sensors is triggered.
Diagnostic mode Indicates the last three alarm triggers by flashing the direction indicators.
Central door lock Centrally locks and unlocks the vehicle
Super lock Activates and de-activates the super lock system.
TIME CONTROL UNIT (TCU)
System Description (Cont'd)
EL-181

Trouble Diagnosis
The Timer Control Unit includes software to help during development testing, manufacturing and service.
It allows the technician to put it into Diagnostic Mode. In this mode, all switch inputs can be tested for conti-
nuity and if so equipped, alarm triggers identified.
When the time control unit is in Diagnostic Mode, the control unit tests the component and indicate the result
by the hazard lamp flashing.
On vehicles with a theft warning system, the TCU will first indicate the source of the last three alarm triggers
by flashing the hazard lamp. (Refer to ªTHEFT WARNING SYSTEMº, EL-209.)
ESTART
NOTE: Before entering diagnostic mode, make sure the vehicle is fully unlocked,
the ignition is switched off and the hazard switch is off.
Press the rear defogger switch exactly 6 times within 10 seconds.
FNG
The hazard lamp flash at 3 Hz for 1 second to confirm step I.
OK
Within 10 seconds after confirmation of step I, turn the ignition ON, for at least 2 seconds.
FNG
The hazard lamp flash at 3 Hz for 1 second to confirm step II.
OK
Within 10 seconds after confirmation of step II, turn the ignition off,
remove the ignition key and press the rear defogger switch for at least 5 seconds.
NGThe hazard lamp flash at 3 Hz for 3 seconds to confirm diagnostic mode is entered.
H
H
H
H
H
H
TIME CONTROL UNIT (TCU)
EL-182

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 ACTION TCU Reaction COMPONENT 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 offHazards 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-183

Schematic
YEL168D
TIME CONTROL UNIT (TCU)
EL-184