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Description=NLEL0485The TCU has the following functions.
INTERIOR LAMP TIMERNLEL0485S01The interior lamp timer is controlled by the TCU.
For further information, refer to ªINTERIOR ROOM LAMPº (EL-116).
IGNITION KEY WARNING CHIME, LIGHT WARNING CHIME AND TRAILER DIRECTION
INDICATOR WARNING CHIME
NLEL0485S02The ignition key and light warning chime are controlled by the TCU.
For further information, refer to ªWARNING CHIMEº (EL-165).
REAR WINDOW DEFOGGER TIMERNLEL0485S03The rear window defogger and door mirror defogger system are controlled by the TCU.
For further information, refer to ªREAR WINDOW DEFOGGERº (EL-198).
POWER DOOR LOCK (SUPER LOCK)NLEL0485S04The power door lock (super lock) is controlled by the TCU.
For further information, refer to ªPOWER DOOR LOCK Ð Super Lock к (EL-281).
MULTI-REMOTE CONTROL SYSTEMNLEL0485S05The multi-remote control system is controlled by the TCU.
For further information, refer to ªMULTI-REMOTE CONTROL SYSTEMº (EL-314).
FUNCTIONNLEL0485S06+The TCU has the following control function.
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 (unlock sensor) is moved from the ªunlockº position
to the ªlockº position.
Trailer direction indicator warning chimeSounds warning chime when operating direction indicator (turn signal) and
towing a trailer.
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:
+driver's door is unlocked,
+the ignition is switched off,
+driver's door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:
+driver's door is locked, or
+ignition switch is turned ªONº.
Power door lock Centrally locks and unlocks the vehicle
Super lock Activates and de-activates the super lock system.
TIME CONTROL UNIT
Description
EL-326
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Trouble Diagnoses=NLEL0486The 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 continu-
ity.
When the timer control unit is in Diagnostic Mode, the control unit tests the component and indicate the result
by the hazard lamp flashing.
SEL496X
TIME CONTROL UNIT
Trouble Diagnoses
EL-327
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CHECKS=NLEL0486S15Once in Diagnostic Mode, 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)Hazard flash once Door open signal for opened door
Driver's door locked from unlocked Hazard flash once Driver's door unlock sensor signal
Passenger door locked from unlocked Hazard flash once Assist door unlock sensor signal
Hazard switch is pressed from off Hazard flash once Hazard switch signal
Turn signal switch is moved to left from
offHazard flash once Left turn signal
Turn signal switch is moved to right from
offHazards flash once Right turn signal
Key turned to lock position in door Hazard flash once* Key cylinder lock switch signal
Lighting switch turned 1st position or 2nd
position from offHazard flash once Tail lamp signal
Key put in ignition from out Hazard flash once Key in detect signal
Door lock/unlock switch is pressed Hazard flash once Central door lock/unlock signal
*) Hazard 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
Trouble Diagnoses (Cont'd)
EL-328
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NOTE:
TIME CONTROL UNIT
Trouble Diagnoses (Cont'd)
EL-329
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SchematicNLEL0506MODELS WITH FUSE AND FUSIBLE LINK BOX E43NLEL0506S01
YEL949B
TIME CONTROL UNIT
Schematic
EL-330
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YEL950B
TIME CONTROL UNIT
Schematic (Cont'd)
EL-331
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MODELS WITH FUSE AND FUSIBLE LINK BOX E90NLEL0506S02
YEL486C
TIME CONTROL UNIT
Schematic (Cont'd)
EL-332
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YEL487C
TIME CONTROL UNIT
Schematic (Cont'd)
EL-333