unit NISSAN TERRANO 2002 Service Repair Manual

qA
CHECK HARNESS CONNECTOR CON-
NECTION.
Check the following harness connector
connection.
M720
Does the engine start?
No
EYe s
System is OK.
(The malfunction is caused
by improper connector
connection.)
CHECK GROUND CIRCUIT FOR
DONGLE UNIT.
Check continuity between dongle control
unit terminalq
3and ground.
Continuity should exist.
Ye s
ENo
Repair harness.
CHECK INTERFACE CIRCUIT.
1. Check continuity between IMMU termi-
nalq
2and dongle control unit terminal
q
5(Open circuit check)
Continuity should exist.
2. Check continuity between IMMU termi-
nalq
2and ground. (Short circuit check)
Continuity should not exist.
Ye s
ENo
Repair harness.
Dongle unit is malfunctioning.
1. Replace dongle control unit.
2. Perform initialisation with CONSULT-II.
For the initialisation procedure, refer to
ªCONSULT-II operation manual NATSº.
YEL327D
YEL328D
YEL329D
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-203

DIAGNOSTIC PROCEDURE 8
Perform initialization with CONSULT-II
Check the following harness connector
connection.
M720
Then initialize NATS. For the operation of
initialization, refer to ªCONSULT-II opera-
tion manual NATSº.
Does the security indicator blink just
after the initialization?
No
EYe s
System is OK.
(The malfunction is caused
by improper connector
connection.)
CHECK GROUND CIRCUIT FOR
DONGLE UNIT.
Check continuity between dongle control
unit terminalq
3and ground.
Continuity should exist.
Ye s
ENo
Repair harness.
CHECK INTERFACE CIRCUIT.
1. Check continuity between IMMU termi-
nalq
2and dongle control unit terminal
q
5(Open circuit check)
Continuity should exist.
2. Check continuity between IMMU termi-
nalq
2and ground. (Short circuit check)
Continuity should not exist.
Ye s
ENo
Repair harness.
Dongle unit is malfunctioning.
1. Replace dongle control unit.
2. Perform initialisation with CONSULT-II.
For the initialisation procedure, refer to
ªCONSULT-II operation manual NATSº.
YEL332D
YEL333D
YEL334D
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H
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-207

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 time
control 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)]
Ito combination meter (security indicator lamp) terminalq
27.
Power is supplied at all times
Ithrough 10A fuse [No.
5, located in the fuse block (J/B)]
Ito time control unit terminal
U09.
With the ignition switch in the ON or START position, power is supplied
Ithrough 10A fuse [No.
26, located in the fuse block (J/B)]
Ito time control unit terminal
U01.
Ground is supplied
Ito 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
Ifrom the hood switch
Ithrough body grounds
M33andM754.
THEFT WARNING SYSTEM
System Description (Cont'd)
EL-211

THEFT WARNING SYSTEM ARMING (With key or remote controller used to lock doors)
If the key is used to lock doors, time control unit terminalU29receives a ground signal
Ifrom terminalq
2of the key cylinder switch
Ithrough body grounds
B18andB10.
If this signal or lock signal from remote controller is received by the time control unit, the theft warning sys-
tem will arm automatically.
When arming the theft warning system, time control unit terminal
U18supplies ground intermittently to termi-
nalq
40of the combination meter. The security lamp will blink intermittently for approximately 30 seconds (and
then blink every 2.6 seconds, due to NATS).
Now the theft warning system is in armed phase.
THEFT WARNING SYSTEM ALARM OPERATION
The theft warning system is triggered by
Iopening a door
Iopening back door
Iopening the hood
Iunlocking door without using the multi-remote controller
Iswitching the ignition ON without a NATS registered key
Itriggering the ultrasonic sensors
Once the theft warning system is in armed phase, if the time control unit receives a signal at terminal
U25,
U35,U36(door unlock sensor),U06,U07(door switch),U32(hood switch), orU17(ultrasonic sensor) the theft
warning system will be triggered. The hazard lamps flash and the horn sounds intermittently.
Power is supplied at all times
Ithrough 10A fuse [No.
16, located in the fuse block (J/B)]
Ito theft warning horn relay.
If the theft warning system is triggered, ground is supplied
Ifrom terminal
U43of the time control unit
Ito theft warning horn relay.
The hazard lamps flash and the horn sounds intermittently.
The alarm automatically turns off after 30 seconds but will reactivate if the vehicle is tampered with again, or
if the initial cause remains present.
THEFT WARNING SYSTEM ALARM DISARMING
The theft warning system alarm operation can be deactivated by either unlocking the vehicle with the remote
controller, or turning the ignition to the ªONº position with a registered NATS key.
THEFT WARNING SYSTEM
System Description (Cont'd)
EL-212

Trouble Diagnoses
Alarm Trigger Feedback
To verify the last three triggers that activated the theft warning system, the Time Control Unit (TCU) can be
switched into Diagnostic Mode (see page EL-182 how to enter Diagnostic Mode).
Approximately 2 seconds after the TCU has finished flashing the hazard lamp to confirm that the Diagnostic
Mode has been successfully entered, the TCU will generate a short beep indicating the trigger that will be dis-
played. A single beep means the most recent trigger, three beeps means the oldest trigger. Following each
beep or group of beeps, the hazard lamp will flash to indicate the alarm trigger.
Source of Alarm Trigger Number (of flashes)
Driver's door lock status switch 1
Passenger door lock status switch 2
Rear door lock status switch 3
Ignition line 4
Driver's door open switch 5
Other door open switch 6
Trunk or back door open switch 8
Hood switch 9
Ultrasonic sensors 10
In case there have been no alarm triggers, there will be no indicator flashes between the audible signals. After
completing the alarm trigger feedback, the TCU will enter Diagnostic Mode as described on page EL-182.
Before continuing trouble diagnoses on the next page, perform the checks as mentioned in the table on page
EL-183.
THEFT WARNING SYSTEM
EL-230

DIAGNOSTIC PROCEDURE 1-(1)
(Door switch check)
CHECK DOOR SWITCH INPUT SIGNAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity 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 (Except
driver side)
IHarness for open or short between
control unit and door switch
Termi-
nalsCondition Continuity
Driver
side door
B07Opened Yes
Closed No
Other
door
B01Opened Yes
Closed No
Terminals Condition Continuity
q
1- groundClosed No
Open Yes
YEL337D
YEL338D
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THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-234

DIAGNOSTIC PROCEDURE 1-(2)
(Hood switch check)
CHECK HOOD SWITCH INPUT SIGNAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between control unit ter-
minal
U32and ground.
OK
EOK
Hood switch is OK.
CHECK HOOD SWITCH.
1. Disconnect hood switch connector.
2. Check continuity between hood switch
terminals.
OK
ENG
Replace hood switch.
Check the following.
IHood switch ground circuit
IHarness for open or short between con-
trol unit and hood switch
Condition Continuity
Hood is open. Yes
Hood is closed. No
Terminals Condition Continuity
q
1-q2Pushed No
Released Yes
YEL339D
YEL340D
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THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-235

DIAGNOSTIC PROCEDURE 2
(Security indicator check)
CHECK INDICATOR LAMP OUTPUT
SIGNAL.
1) Remove time control unit from fuse
block.
Note: Junction block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the lock-
ing bars.
2) Check voltage between time control
unit terminal
U18and ground.
Battery voltage should exist.
NG
EOK
Security indicator lamp is
OK.
CHECK INDICATOR LAMP.
OK
ENG
Replace indicator lamp.
CHECK POWER SUPPLY CIRCUIT FOR
INDICATOR.
1) Disconnect security indicator connec-
tor.
2) Check voltage between indicator termi-
nalq
27and ground.
Battery voltage should exist.
OK
ENG
Check the following:
I10A fuse [No.
16,
located in the fuse block
(J/B)]
IHarness for open or
short between combina-
tion meter and fuse
Check harness for open or short between
security indicator and time control unit.
YEL603D
YEL341D
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THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-236

DIAGNOSTIC PROCEDURE 3
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR INPUT SIG-
NAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very fragile.
TCU should be removed carefully to avoid
breaking the locking bars.
Check continuity between time control unit termi-
nalsq
25,q35,q36and ground.
NG
EOK
Door unlock sensor
is OK.
CHECK DOOR UNLOCK SENSOR.
1. Disconnect door unlock sensor connector.
2. Check continuity between door unlock sensor
terminals.
OK
ENG
Replace door
unlock sensor.
Check the following:
IDoor unlock sensor ground circuit
IHarness for open or short between control unit
and door unlock sensor
Terminals
Condition Continuity
!@
Driver
side door
U35GroundLocked No
Unlocked Yes
Passen-
ger
side door
U36GroundLocked No
Unlocked Yes
Rear
door
U25GroundLocked No
Unlocked Yes
Terminals Condition Continuity
Front with
super lock
and rearq
2-q5Locked No
Unlocked Yes
Front with-
out super
lockq
2-q4Locked No
Unlocked Yes
YEL342D
YEL343D
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THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-237

DIAGNOSTIC PROCEDURE 4
(Door key cylinder switch check)
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity 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
cylinder switch terminals.
OK
ENG
Replace key cylinder
switch.
Check the following:
IHarness connectors between key cylin-
der switch and time control unit
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 Continuity
Between neutral and lock Yes
Unlock/neutral No
Terminals Key position Continuity
q
1-q2
Neutral No
Between neu-
tral and lockYe s
Unlock/neutral No
Full stroke
(Lock)No
NEL613
NEL614
H
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THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-238