Central lock NISSAN TERRANO 2004 Service Repair Manual

FUNCTION
IThe TCU has the following control functions.
Item Details of control
Direction indicators Switches the director indicators (Left, Right or All) when the combination switch or hazard
switch is operated.
Light warning chime Sounds warning chime when driver's door is opened with light switch in the 1st or 2nd
position and ignition switch ªOFFº.
Ignition key warning chime Sounds 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 timer Turn off rear window defogger and door mirror heater, if equipped, about 15 minutes
after the rear window defogger switch is turned ªONº.
Battery saver Shuts 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 timer Keep interior lamp illuminated for about 30 seconds when:
I
driver's door is unlocked,
I the ignition is switched off,
I driver's door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:
I driver's door is locked, or
I ignition switch is turned ªONº.
Theft warning
system Normal 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-217
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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
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