unit NISSAN TERRANO 2002 Service Repair Manual

DIAGNOSTIC PROCEDURE 2
(Door key cylinder switch check)
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Check voltage between time control unit
connector terminal
U29and ground.
NG
EOK
Door key cylinder switch is
OK.
CHECK DOOR KEY CYLINDER SWITCH.
1) Disconnect door key cylinder switch
connector.
2) Check continuity between door key cyl-
inder switch terminals.
OK
ENG
Replace key cylinder
switch.
Check the following:
IHarness connectors
IDoor key cylinder switch ground circuit
IHarness for open or short-circuit
between super lock control unit and
door key cylinder.
Key cylinder switch operation Voltage [V]
Between neutral and lock 0
Unlock/neutral Approx. 5
Terminals Key position Continuity
q
1-q2
Neutral No
Between neu-
tral and lockYe s
Unlock/neutral No
Full stroke
(Lock)No
YEL303D
YEL304D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-162

DIAGNOSTIC PROCEDURE 3
(Door lock actuator check)
CHECK DOOR LOCK ACTUATOR CIR-
CUIT.
Check voltage for door lock actuator.
Before operating passenger side knob
lock switch, close all doors.
OK
ENG
Door lock actuator is OK.
CHECK DOOR LOCK ACTUATOR.
1. Disconnect door lock actuator connec-
tor.
2. Apply 12V direct current to door lock
actuator and check operation.
Front door
Rear door
NG
EOK
Check harness between
control unit and door lock
actuator.
Replace door lock actuator assembly.
Knob lock
switch
conditionTerminals
Voltage
(V)
!@
Unlock,
Lock
U41GroundApprox.
12
(Approx.
5 sec-
onds) Lock,
Unlock
U44Ground
Door lock actuator
operationTerminals
!@
Unlocked,
Lockedq
6q3
Locked,
Unlockedq3: (LHD)
q
4: (RHD)q
6: (LHD)
q
1: (RHD)
Door lock actuator
operationTerminals
!@
Unlocked,
Lockedq
6: (LH)
q
1: (RH)q
3: (LH)
q
4: (RH)
Locked,
Unlockedq
3: (LH)
q
4: (RH)q
6: (LH)
q
1: (RH)
YEL305D
YEL306D
YEL307D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-163

DIAGNOSTIC PROCEDURE 4
(Super lock actuator check)
CHECK SUPER LOCK ACTUATOR CIRCUIT.
Check voltage for super lock actuator.
Note:
Put the system in set condition before check-
ing release signal.
OK
ENG
Super lock actuator is
OK.
CHECK SUPER LOCK ACTUATOR.
1. Disconnect door lock actuator assembly
connector.
2. Set lever A in lock position.
3. Apply 12V direct current to door lock actua-
tor assembly and check operation.
Front door
Rear door
NG
EOK
Check harness
between control unit
and door lock actuator
assembly.
Replace door lock actuator assembly.
Door key
cylinder
switch con-
ditionTerminals
Voltage
(V)
!@
Lock (Set)
U40Ground
Approx. 12
Unlock
(Released)
U44Ground
Super lock
actuator
operationTerminalsConnec-
tion from
lever A to
lever B !@
Released
,Setq
1q4Discon-
nect
Set,
Releasedq
4q1Connect
Super lock
actuator
operationTerminalsConnec-
tion from
lever A to
lever B !@
Released
,Setq
1: (LH)
q
6: (RH)q
4: (LH)
q
3: (RH)Discon-
nect
Set,
Releasedq
4: (LH)
q
3: (RH)q
1: (LH)
q
6: (RH)Connect
YEL308D
YEL309D
YEL310D
YEL311D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-164

DIAGNOSTIC PROCEDURE 5
(Door switch check)
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage between fuse block (J/B)
and ground.
NG
EOK
Door switch is OK.
CHECK DOOR SWITCH.
1) Disconnect door switch connector.
2) Check continuity between door switch
terminals.
OK
ENG
Replace door switch.
Check the following.
IDoor switch ground condition
IHarness for open or short between con-
trol unit and door switch
Termi-
nalsCondition Voltage [V]
Driver
side door
B07Opened 0
Closed Approx. 12
Other
door
B01Opened 0
Closed Approx. 12
Terminals Condition Continuity
Other
door
switchesq
1-
groundClosed No
Open Yes
YEL312D
YEL313D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-165

DIAGNOSTIC PROCEDURE 6
(NATS release signal check)
Does engine start properly?
Ye s
ENo
Check NATS system.
CHECK NATS SIGNAL CIRCUIT.
1) Disconnect control unit connector and
NATS IMMU connector.
2) Check continuity between control unit
terminal
U26and NATS IMMU termi-
nalq
3.
Continuity should exist.
3) Check continuity between control unit
terminal
U26and ground.
Continuity should not exist.
OK
ENG
Repair harness.
CHECK NATS RELEASE SIGNAL.
1) Connect control unit connector and
NATS IMMU connector.
2) Check voltage between control unit
terminal
U26and ground.
OK
ENG
Check NATS system.
Replace super lock control unit.
Ignition switch conditionVoltage
[V]
LOCK
12
More than 10 seconds after ignition
switch turned to ªONº position
For 10 seconds after ignition
switch turned to ªONº positionPulse
YEL314D
YEL315D
H
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-166

DIAGNOSTIC PROCEDURE 7
(Ignition switch check)
CHECK IGNITION SWITCH INPUT SIG-
NAL.
Check voltage between control unit termi-
nal
U22and ground.
NG
EOK
Ignition switch is OK.
CHECK IGNITION SWITCH POWER
SUPPLY.
Check voltage between ignition switch
harness terminalq
2and ground.
Battery voltage should exist.
OK
ENG
Check the following.
I10A fuse [No.
16,
located in fuse block
(J/B)]
IHarness for open or
short between ignition
switch and fuse
CHECK IGNITION SWITCH.
1) Disconnect ignition switch connector.
2) Check continuity between ignition
switch terminals.
OK
ENG
Replace ignition switch.
Check harness for open or short between
control unit and ignition switch.
Condition of key switch Voltage [V]
Key is inserted Approx. 12
Key withdrawn 0
Terminals Condition Continuity
q
1-q2
Key is
inserted.Ye s
Key is with-
drawn.No
DIAGNOSTIC PROCEDURE 8
(Ignition switch ªONº circuit check)
Terminals Ignition switch position
!@OFF ACC ON
U01Ground 0V 0V Battery voltage
If NG, check the following.
I10A fuse [No.
26, located in the fuse block (J/B)]
IHarness for open or short
YEL316D
YEL317D
YEL318D
YEL319D
H
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-167

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

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