NISSAN XTERRA 2008 N50 / 2.G Repair Manual

WARNING
cChildren may be severely injured or
killed when the front air bags, side air
bags or curtain and rollover air bags
inflate if they are not properly re-
strained. Pre-teens and children should
be properly restrained in the rear seat, if
possible.
ARS1042ARS1043ARS1044
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WARNING
cEven with the NISSAN Advanced Air
Bag System, never install a rear-facing
child restraint in the front seat. An in-
flating front air bag could seriously in-
jure or kill your child. See “Child re-
straints” earlier in this section for
details.WARNING
Front seat-mounted side-impact supple-
mental air bags (if so equipped) and roof-
mounted curtain side-impact and rollover
supplemental air bags (if so equipped):
cThe side air bags and curtain and roll-
over air bags ordinarily will not inflate in
the event of a frontal impact, rear im-
pact, or lower severity side collision.
Always wear your seat belts to help
reduce the risk or severity of injury in
various kinds of accidents.
ARS1045WRS0256
Do not lean against the door.
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WARNING
cThe seat belts, the side air bags and
curtain and rollover air bags are most
effective when you are sitting well back
and upright in the seat. The side air bag
and curtain and rollover air bag inflate
with great force. Do not allow anyone to
place their hand, leg or face near the
side air bag on the side of the seatback
of the front seat or near the side roof
rails. Do not allow anyone sitting in the
front seats or rear outboard seats to
extend their hand out of the window or
lean against the door. Some examples
of dangerous riding positions are
shown in the previous illustrations.
Do not lean against doors or windows.
WRS0365
Do not lean against doors or windows.
SSS0162
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WARNING
cWhen sitting in the rear seat, do not
hold onto the seatback of the front seat.
If the side air bag inflates, you may be
seriously injured. Be especially careful
with children, who should always be
properly restrained. Some examples of
dangerous riding positions are shown
in the illustrations.
cDo not use seat covers on the front
seatbacks. They may interfere with side
air bag inflation.
WRS0363SSS0159
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1. Roof-mounted curtain side-impact and
rollover supplemental air bag inflators (if
so equipped)
2. Roof-mounted curtain side-impact and
rollover supplemental air bags (if so
equipped)
3. Air bag Control Unit (ACU)
4. Supplemental front-impact air bag mod-
ules
5. Crash zone sensor
6. Occupant classification system control
unit
7. Occupant classification sensor (pres-
sure sensor)
8. Satellite sensors
9. Seat belt buckle switches
10. Seat belt with pretensioner
11. Front seat-mounted side-impact
supplemental air bag modules (if so
equipped)
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NISSAN Advanced Air Bag System
(front seats)
This vehicle is equipped with the NISSAN Ad-
vanced Air Bag System for the driver and front
passenger seats. This system is designed to
meet certification requirements under U.S. regu-
lations. It is also permitted in Canada.However,
all of the information, cautions and warn-
ings in this manual still apply and must be
followed.
The driver supplemental front-impact air bag is
located in the center of the steering wheel. The
passenger supplemental front-impact air bag is
mounted in the dashboard above the glove box.
The front air bags are designed to inflate in higher
severity frontal collisions, although they may in-
flate if the forces in another type of collision are
similar to those of a higher severity frontal impact.
They may not inflate in certain frontal collisions.
Vehicle damage (or lack of it) is not always an
indication of proper front air bag system opera-
tion.
The NISSAN Advanced Air Bag System has dual
stage inflators. It also monitors information from
the crash zone sensor, the Air bag Control Unit
(ACU) , seat belt buckle sensors, occupant clas-
sification sensor (pressure sensor) and passen-
ger seat belt tension sensor. Inflator operation is
based on the severity of a collision and seat beltusage for the driver. For the front passenger, it
additionally monitors the weight of an occupant
or object on the seat and seat belt tension. Based
on information from the sensors, only one front air
bag may inflate in a crash, depending on the
crash severity and whether the front occupants
are belted or unbelted. Additionally, the front
passenger air bag may be automatically turned
OFF under some conditions, depending on the
weight detected on the passenger seat and how
the seat belt is used. If the front passenger air bag
is OFF, the passenger air bag status light will be
illuminated (if the seat is unoccupied, the light will
not be illuminated, but the air bag will be off) . See
“Front passenger air bag and status light” later in
this section for further details. One front air bag
inflating does not indicate improper performance
of the system.
If you have any questions about your air bag
system, please contact NISSAN or your NISSAN
dealer. If you are considering modification of your
vehicle due to a disability, you may also contact
NISSAN. Contact information is contained in the
front of this Owner’s Manual.
When a front air bag inflates, a fairly loud noise
may be heard, followed by the release of smoke.
This smoke is not harmful and does not indicate a
fire. Care should be taken to not inhale it, as it maycause irritation and choking. Those with a history
of a breathing condition should get fresh air
promptly.
Front air bags, along with the use of seat belts,
help to cushion the impact force on the face and
chest of the front occupants. They can help save
lives and reduce serious injuries. However, an
inflating front air bag may cause facial abrasions
or other injuries. Front air bags do not provide
restraint to the lower body.
Even with NISSAN advanced air bags, seat belts
should be correctly worn and the driver and pas-
senger seated upright as far as practical away
from the steering wheel or instrument panel. The
front air bags inflate quickly in order to help
protect the front occupants. Because of this, the
force of the front air bag inflating can increase the
risk of injury if the occupant is too close to, or is
against, the front air bag module during inflation.
The front air bags deflate quickly after a collision.
The front air bags operate only when the
ignition switch is in the ON or START posi-
tion.
After turning the ignition key to the ON
position, the supplemental air bag warning
light illuminates. The supplemental air bag
warning light will turn off after about 7
seconds if the system is operational.
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Front passenger air bag and status light
WARNING
The front passenger air bag is designed to
automatically turn OFF under some con-
ditions. Read this section carefully to
learn how it operates. Proper use of the
seat, seat belt and child restraints is nec-
essary for most effective protection. Fail-
ure to follow all instructions in this
manual concerning the use of seats, seat
belts and child restraints can increase the
risk or severity of injury in an accident.Status light
The front passenger air bag status light
is
located near the climate controls. The light oper-
ates as follows:
cUnoccupied passenger’s seat: The
is
OFF and the front passenger air bag is OFF
and will not inflate in a crash.
cPassenger’s seat occupied by a small adult,
child or child restraint as outlined in this
section: The
illuminates to indicate
that the front passenger air bag is OFF and
will not inflate in a crash.
cOccupied passenger seat and the passen-
ger meet the conditions outlined in this sec-
tion: The light
is OFF to indicate that
the front passenger air bag is operational.
Front passenger air bag
The front passenger air bag is designed to auto-
matically turn OFF when the vehicle is operated
under some conditions as described below in
accordance with U.S. regulations. If the front
passenger air bag is OFF, it will not inflate in a
crash. The driver air bag and other air bags in your
vehicle are not part of this system.
The purpose of the regulation is to help reduce
the risk of injury or death from an inflating air bag
to certain front passenger seat occupants, suchas children, by requiring the air bag to be auto-
matically turned OFF. Certain sensors are used
to meet the requirements.
One sensor used is the occupant classification
sensor (pressure sensor) . It is in the bottom of the
front passenger seat cushion and is designed to
detect an occupant and objects on the seat by
weight. It works together with seat belt sensors
described later. For example, if a child is in the
front passenger seat, the Advanced Air Bag Sys-
tem is designed to turn the passenger air bag
OFF in accordance with the regulations. Also, if a
child restraint of the type specified in the regula-
tions is on the seat, its weight and the child’s
weight can be detected and cause the air bag to
turn OFF. Occupant classification sensor opera-
tion can vary depending on the front passenger
seat belt sensors.
The front passenger seat belt sensors are de-
signed to detect if the seat belt is buckled and the
amount of tension on the seat belt, such as when
it is in the Automatic Locking Retractor (ALR)
mode (child restraint mode) . Based on the
weight on the seat detected by the occupant
classification sensor and the belt tension de-
tected on the seat belt, the Advanced Air Bag
System determines whether the front passenger
air bag should be automatically turned OFF as
required by the regulations.
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Front passenger seat adult occupants who are
properly seated and using the seat belt as out-
lined in this manual should not cause the passen-
ger air bag to be automatically turned OFF. For
small adults it may be turned OFF, however if the
occupant takes his/her weight off the seat cush-
ion (for example, by not sitting upright, by sitting
on an edge of the seat, or by otherwise being out
of position) , this could cause the sensor to turn
the air bag OFF. In addition, if the occupant
improperly uses the seat belt in the ALR mode,
this could cause the air bag to be turned OFF.
Always be sure to be seated and wearing the seat
belt properly for the most effective protection by
the seat belt and supplemental air bag.
NISSAN recommends that pre-teens and chil-
dren be properly restrained in a rear seat.
NISSAN also recommends that appropriate child
restraints and booster seats be properly installed
in a rear seat. If this is not possible, the occupant
classification sensor and seat belt sensors are
designed to operate as described above to turn
the front passenger air bag OFF for specified
child restraints as required by the regulations.
Failing to properly secure child restraints and to
use the ALR mode may allow the restraint to tip or
move in an accident or sudden stop. This can also
result in the passenger air bag inflating in a crash
instead of being OFF. See “Child restraints” ear-
lier in this section for proper use and installation.
If the front passenger seat is not occupied the
passenger air bag is designed not to inflate in a
crash. However, heavy objects placed on the
seat could result in air bag inflation, because of
the object’s weight detected by the occupant
classification sensor. Other conditions could also
result in air bag inflation, such as if a child is
standing on the seat, or if two children are on the
seat, contrary to the instructions in this manual.
Always be sure that you and all vehicle occupants
are seated and restrained properly.
Using the passenger air bag status light, you can
monitor when the front passenger air bag is au-
tomatically turned OFF with the seat occupied.
The light will not illuminate when the front pas-
senger seat is unoccupied.
If an adult occupant is in the seat but the passen-
ger air bag status light is illuminated (indicating
that the air bag is OFF) , it could be that the
person is a small adult, or is not sitting on the seat
properly or not using the seat belt properly.
If a child restraint must be used in the front seat,
the passenger air bag status light may or may not
be illuminated, depending on the size of the child
and the type of child restraint being used. If the air
bag status light is not illuminated (indicating that
the air bag might inflate in a crash) , it could be
that the child restraint or seat belt is not being
used properly. Make sure that the child restraint isinstalled properly, the seat belt is used properly
and the occupant is positioned properly. If the air
bag status light is not illuminated, reposition the
occupant or child restraint in a rear seat.
If the passenger air bag status light will not illu-
minate even though you believe that the child
restraint, the seat belts and the occupant are
properly positioned, the system may be sensing
an unoccupied seat (in which case the air bag is
OFF) . Your NISSAN dealer can check that the
system is OFF by using a special tool. However,
until you have confirmed with your dealer that
your air bag is working properly, reposition the
occupant or child restraint in a rear seat.
The air bag system and passenger air bag status
light will take a few seconds to register a change
in the passenger seat status. For example, if a
large adult who is sitting in the front passenger
seat exits the vehicle, the passenger air bag
status light will go from OFF to ON for a few
seconds and then to OFF. This is normal system
operation and does not indicate a malfunction.
If a malfunction occurs in the front passenger air
bag system, the supplemental air bag warning
light
, located in the meter and gauges area
in the center of the instrument panel, will blink.
Have the system checked by a NISSAN dealer.
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Other supplemental front-impact air bag
precautions
WARNING
cDo not place any objects on the steer-
ing wheel pad or on the instrument
panel. Also, do not place any objects
between any occupant and the steering
wheel or instrument panel. Such ob-
jects may become dangerous projec-
tiles and cause injury if the front air
bags inflate.
cImmediately after inflation, several
front air bag system components will be
hot. Do not touch them; you may se-
verely burn yourself.
cNo unauthorized changes should be
made to any components or wiring of
the supplemental air bag system. This is
to prevent accidental inflation of the
supplemental air bag or damage to the
supplemental air bag system.
cDo not make unauthorized changes to
your vehicle’s electrical system, sus-
pension system or front end structure.
This could affect proper operation of
the front air bag system.cTampering with the front air bag system
may result in serious personal injury.
Tampering includes changes to the
steering wheel and the instrument
panel assembly by placing material
over the steering wheel pad and above
the instrument panel or by installing
additional trim material around the air
bag system.
cModifying or tampering with the front
passenger seat may result in serious
personal injury. For example, do not
change the front seats by placing mate-
rial on the seat cushion or by installing
additional trim material, such as seat
covers, on the seat that are not specifi-
cally designed to assure proper air bag
operation. Additionally, do not stow any
objects under the front passenger seat
or the seat cushion and seatback. Such
objects may interfere with the proper
operation of the occupant classifica-
tion sensor (pressure sensor) .
cNo unauthorized changes should be
made to any components or wiring of
the seat belt system. This may affect the
front air bag system. Tampering with
the seat belt system may result in seri-
ous personal injury.cWork on and around the front air bag
system should be done by a NISSAN
dealer. Installation of electrical equip-
ment should also be done by a NISSAN
dealer. The Supplemental Restraint
System (SRS) wiring should not be
modified or disconnected. Unautho-
rized electrical test equipment and
probing devices should not be used on
the air bag system.
cA cracked windshield should be re-
placed immediately by a qualified re-
pair facility. A cracked windshield could
affect the function of the supplemental
air bag system.
cThe SRS wiring harness connectors are
yellow and orange for easy
identification.
When selling your vehicle, we request that you
inform the buyer about the front air bag system
and guide the buyer to the appropriate sections
in this Owner’s Manual.
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Front seat-mounted side-impact
supplemental air bag and roof-
mounted curtain side-impact and
rollover supplemental air bag systems
(if so equipped)
The side air bags are located in the outside of the
seatback of the front seats. The curtain and roll-
over air bags are located in the side roof rails.
These systems are designed to meet voluntary
guidelines to help reduce the risk of injury to
out-of-position occupants.However, all of the
information, cautions and warnings in this
manual still apply and must be followed.
The side air bags and curtain and rollover air bagsare designed to inflate in higher severity side
collisions, although they may inflate if the forces
in another type of collision are similar to those of
a higher severity side impact. They are designed
to inflate on the side where the vehicle is im-
pacted. They may not inflate in certain side colli-
sions.
Curtain and rollover air bags are also designed to
inflate in certain types of rollover collisions or near
rollovers. As a result, certain vehicle movements
(for example, during severe off roading) may
cause the curtain and rollover air bags to inflate.
Vehicle damage (or lack of it) is not always an
indication of proper side air bag and curtain and
rollover air bag operation.
When the side air bags and curtain and rollover
supplemental air bags inflate, a fairly loud noise
may be heard, followed by release of smoke. This
smoke is not harmful and does not indicate a fire.
Care should be taken not to inhale it, as it may
cause irritation and choking. Those with a history
of a breathing condition should get fresh air
promptly.
Side air bags, along with the use of seat belts,
help to cushion the impact force on the chest of
the front occupants. Curtain and rollover air bags
help to cushion the impact force to the head of
occupants in the front and rear outboard seating
positions. They can help save lives and reduceserious injuries. However, an inflating side air bag
or curtain and rollover air bag may cause abra-
sions or other injuries. Side air bags and curtain
and rollover air bags do not provide restraint to
the lower body.
The seat belts should be correctly worn and the
driver and passenger seated upright as far as
practical away from the side air bag. Rear seat
passengers should be seated as far away as
practical from the door finishers and side roof
rails. The side air bags and curtain and rollover air
bags inflate quickly in order to help protect the
occupants. Because of this, the force of the side
air bag and curtain and rollover air bag inflating
can increase the risk of injury if the occupant is
too close to, or is against, these air bag modules
during inflation. The side air bag will deflate
quickly after the collision is over.
The curtain and rollover air bags will remain in-
flated for a short time.
The side air bags and curtain and rollover
air bags operate only when the ignition
switch is in the ON or START position.
After turning the ignition key to the ON
position, the supplemental air bag warning
light illuminates. The supplemental air bag
warning light will turn off after about 7
seconds if the system is operational.
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