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SB


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H RESTRAINTS

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                                                                                                SECTION                    SB
                                                                                                                     SEAT BELTS
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                                                                                                                                                              E
                                                               CONTENTS
PRECAUTIONS ......................................................... 2
                                                                     .            SEAT BELT BUCKLE ........................................... 7    .         F
 Precautions for Supplemental Restraint System                                  Seat Belt Inspection ................................................. 8
                                                                                                                                                    .
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                          AFTER A COLLISION .......................................... 8    .
 SIONER" ................................................................. 2
                                                                     .            PRELIMINARY CHECKS ..................................... 8        .         G
 Precautions for Seat Belt Service ........................... 2     .            SEAT BELT RETRACTOR ON-VEHICLE
   AFTER A COLLISION .......................................... 2    .            CHECK ................................................................. 9
                                                                                                                                                    .
SEAT BELTS ............................................................. 3
                                                                     .            SEAT BELT RETRACTOR OFF-VEHICLE
                                                                                                                                                              SB
 Removal and Installation of Front Seat Belt ............ 3          .            CHECK ................................................................. 9
                                                                                                                                                    .
   SEAT BELT RETRACTOR ................................... 4         .         LATCH (LOWER ANCHORS AND TETHER FOR
   SEAT BELT BUCKLE ........................................... 4    .         CHILDREN) SYSTEM .............................................. 11   .
 Removal and Installation of Rear Seat Belt ............ 5           .          Removal and Installation ....................................... 11 .          I
   COMPONENTS ................................................... 5  .         TOP TETHER STRAP CHILD RESTRAINT ............ 12                     .
   SEAT BELT RETRACTOR - OUTBOARD ........... 7                      .          Removal and Installation ....................................... 12 .
   SEAT BELT RETRACTOR - CENTER ................. 7                  .                                                                                         J



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Revision: September 2006                                                  SB-1                                                             2007 Xterra
                                              PRECAUTIONS

PRECAUTIONS                                                         PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                           EHS001DH


The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
G    To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
     in the event of a collision which would result in air bag inflation, all maintenance must be per-
     formed by an authorized NISSAN/INFINITI dealer.
G    Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
     sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
     Bag Module, see the SRS section.
G    Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
     Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
     harness connectors.
Precautions for Seat Belt Service                                                                             EHS001DI


CAUTION:
G  Before removing the seat belt pre-tensioner assembly, turn the ignition switch OFF, disconnect
   both battery cables and wait at least 3 minutes.
G  After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
   sioner assembly connector, ensure entire SRS operates properly. Refer to SRS-21, "SRS Opera-
   tion Check" .
G  Do not disassemble buckle or seat belt assembly.
G  Do not reuse seat belt anchor bolts after removal. Replace with new ones.
G  Replace anchor bolts if they are deformed or worn out.
G  Never oil tongue and buckle.
G  If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
   assembly.
G  If webbing is cut, frayed, or damaged, replace seat belt assembly.
G  When replacing seat belt assembly, use a genuine NISSAN seat belt assembly.
AFTER A COLLISION
WARNING:
G  Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
G  NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
   collision was minor and the belts show no damage and continue to operate properly. Failure to do
   so could result in serious personal injury in an accident. Seat belt assemblies not in use during a
   collision should also be replaced if either damage or improper operation is noted. Seat belt pre-
   tensioner should be replaced even if the seat belts are not in use during a frontal collision in which
   the air bags are deployed.
Replace any seat belt assembly (including anchor bolts) if:
G  The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
   buckles show no damage and continue to operate properly).
G  The seat belt was damaged in an accident. (i.e., torn webbing, bent retractor or guide, etc.)
G  The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
   or distortion and repair as necessary before installing a new seat belt assembly.
G  Anchor bolts are deformed or worn out.
G  The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in
   which the air bags are deployed.

Revision: September 2006                              SB-2                                              2007 Xterra
                                                       SEAT BELTS

SEAT BELTS                                                                                                                PFP:86884
                                                                                                                                          A
Removal and Installation of Front Seat Belt                                                                                    EHS001DJ




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                                                                                                                         WHIA0344E
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   1.   Center pillar upper finisher          2.   D-ring anchor              3.   D-ring anchor bolt cover
   4.   Seat belt retractor and belt assem-   5.   Seat belt lower anchor RH 6.    Seat belt tension sensor connector
        bly RH                                     (seat belt tension sensor)
                                                                                                                                          L
   7.   Anchor cover RH                       8.   Anchor cover LH            9.   Seat belt lower anchor LH
   10. Center pillar lower finisher           11. Seat belt pre-tensioner     12. Seat belt retractor and belt assembly LH
                                                  connector
   13. Center pillar                          14. Seat belt height adjuster   A.   Height adjuster anchor bolt                            M
   B.   D-ring anchor bolt                    C.   Seat belt lower anchor     D.   Retractor anchor bolt
                                                   bolt
   E.   Retractor bolt upper                       Vehicle front




Revision: September 2006                                      SB-3                                                      2007 Xterra
                                                   SEAT BELTS

SEAT BELT RETRACTOR
Removal
CAUTION:
G  Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
   3 minutes.
1. Remove the center pillar upper/lower finishers. Refer to EI-27, "BODY SIDE TRIM" .
2. Remove the retractor anchor bolt, retractor bolt upper, then remove the retractor and belt assembly.
   G On RH side, disconnect the seat belt tension sensor.

3. Disconnect the seat belt pre-tensioner electrical connector.
   CAUTION:
   G For installing/removing seat belt pre-tensioner connec-
     tor, insert a thin screwdriver wrapped in tape into the
     notch, lift the lock and remove the connector.
   G Install the connector with the lock raised, and push the
     lock into the connector.




                                                                                                      PHIA0341E


Installation
 Installation is in the reverse order of removal.
G    Install the seat belt retractor upper bolt first.
G    Ensure that seat belt height adjuster is locked in the lowest position during installation.
SEAT BELT BUCKLE
Removal
1.   Remove the front seat. Refer to SE-13, "Removal and Installation" .
2.   Remove screw and seat cushion inner finisher.
3.   Remove the anchor bolt and buckle.
4.   Disconnect the buckle switch connector from the seat connector.




                                                                                                      WHIA0128E


Installation
Installation is in the reverse order of removal.




Revision: September 2006                              SB-4                                         2007 Xterra
                                            SEAT BELTS

Removal and Installation of Rear Seat Belt                                                                           EHS001DK

COMPONENTS                                                                                                                      A
                                             Outboard Seat
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                                                                                                              LHIA0101E

  1.   Seat belt height adjuster   2.   Seat belt retractor and belt assembly   3.   Seat belt lower anchor
  4.   Seat belt buckle            5.   D-ring anchor bolt cover                6.   D-ring anchor




Revision: September 2006                           SB-5                                                   2007 Xterra
                                                      SEAT BELTS

                                                         Center Seat




                                                                                        LHIA0102E

  1.   Seat belt retractor and belt assem-   2.   Seat belt buckle     3.   Finisher
       bly
  4.   Guide plate




Revision: September 2006                                     SB-6                      2007 Xterra
                                                   SEAT BELTS

SEAT BELT RETRACTOR - OUTBOARD
Removal                                                                                                        A
1.   Remove    seat belt lower anchor cover and bolt.
2.   Remove    the D-ring anchor bolt cover and D-ring anchor bolt.
                                                                                                               B
3.   Remove    the upper and lower luggage area trim. Refer to EI-27, "BODY SIDE TRIM" .
4.   Remove    seat belt retractor anchor bolt and the seat belt assembly.
5.   Remove    the seat belt height adjuster assembly.
                                                                                                               C
Installation
 Installation is in the reverse order of removal.
G    Make sure seat belt height adjuster is locked in the lowest position during installation.                 D

SEAT BELT RETRACTOR - CENTER
Removal                                                                                                        E
1.   Remove    headlining. Refer to EI-30, "HEADLINING" .
2.   Remove    seat belt guide plate bolts.
3.   Remove    seat belt retractor and belt assembly bolt and nut.                                             F
4.   Remove    seat belt retractor cover.
5.   Remove    bolt and remove seat belt retractor and seat belt assembly.
                                                                                                               G
Installation
Installation is in the reverse order of removal.
SEAT BELT BUCKLE                                                                                               SB
Removal
1.   Remove the rear seat cushion. Refer to SE-17, "REAR SEAT" .
2.   Remove the anchor bolt and buckle.                                                                         I
Installation
Installation is in the reverse order of removal.
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Revision: September 2006                              SB-7                                       2007 Xterra
                                                SEAT BELTS

Seat Belt Inspection                                                                                         EHS001DM

AFTER A COLLISION
WARNING:
Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the col-
lision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioners
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly (including anchor bolts) if:
G    The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
     buckles show no damage and continue to operate properly).
G    The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide).
G    The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
     or distortion and repair as necessary before installing a new seat belt assembly.
G    Anchor bolts are deformed or worn out.
G    The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in
     which the air bags are deployed.

PRELIMINARY CHECKS
1.   Check the seat belt warning lamp/chime for proper operation as follows:
a.   Switch ignition ON. The seat belt warning lamp should illuminate. Also, the seat belt warning chime should
     sound for about seven seconds.
b.   Fasten driver's seat belt. The seat belt warning lamp should go out and the chime (if sounding) should
     stop.
2.   If the air bag warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag warning
     lamp. Refer to SRS-19, "CONSULT-II Function (AIR BAG)" .
3.   Check that the seat belt retractor, seat belt anchor and buckle bolts are securely attached.
4.   Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Ensure guide swivels
     freely and that belt lays flat and does not bind in guide. Ensure height adjuster operates properly and
     holds securely.
5.   Check retractor operation:
a.   Fully extend the seat belt webbing and check for twists, tears or other damage.
b.   Allow the seat belt to retract. Ensure that belt returns smoothly and completely into the retractor. If the
     seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth, because dirt built
     up in the loops of the upper anchors can cause the seat belts to retract slowly.
c.   Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the belt does
     not return smoothly, the cause may be an accumulation of dust or dirt. Use the "SEAT BELT TAPE SET"
     and perform the following steps.
     Inspect the front seat belt through-anchor:
     1. Pull the seat belt out to a length of 500 mm (19.69 in) or more.
     2. Use a clip or other device to hold the seat belt at the center pillar belt opening.
     3. Pass a thin wire through the through-anchor belt opening. Hold both ends of the wire and pull taut while
        moving it up and down several times along the belt opening surface to remove dirt.
     4. Any dirt that cannot be removed with the wire can be removed by cleaning the opening with a clean
        cloth.
     5. Apply tape at the point where the belt contacts the through-anchor belt opening.
        NOTE:
        Apply the tape so that there is no looseness or wrinkling.
     6. Remove the clip holding the seat belt and check that the belt returns smoothly.
     7. Repeat steps above as necessary to check the other seat belts.



Revision: September 2006                              SB-8                                             2007 Xterra
                                                 SEAT BELTS

SEAT BELT RETRACTOR ON-VEHICLE CHECK
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)                                                 A
NOTE:
All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop)
the retractor will lock and prevent the belt from extending any further. All 3-point type seat belt retractors            B
except the driver's seat belt also have an Automatic Locking Retractors (ALR) mode. The ALR mode (also
called child restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt
is fully extended. When the belt is then retracted partially, the ALR mode automatically locks the seat belt in a         C
specific position so the belt cannot be extended any further. To cancel the ALR mode, allow the seat belt to
fully wind back into the retractor.
Check the seat belt retractors using the following test(s) to determine if a retractor assembly is operating prop-
erly.                                                                                                                     D

ELR Function Stationary Check
Grasp the shoulder belt and pull forward quickly. The retractor should lock and prevent the belt from extending           E
further.
ALR Function Stationary Check
1.   Pull out entire length of seat belt from retractor until a click is heard.                                           F
2.   Retract the belt partially. A clicking noise should be heard as the belt retracts indicating that the retractor is
     in the Automatic Locking Retractor (ALR) mode.
3.   Grasp the seat belt and try to pull out the retractor. The belt must lock and not extend any further. If neces-      G
     sary replace the retractor assembly.
4.   Allow the entire length of the belt to retract to cancel the automatic locking mode.
                                                                                                                          SB
ELR Function Moving Check
WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for example, a                   I
large, empty parking lot). Road surface must be paved and dry. DO NOT perform the following test on
wet or gravel roads or on public streets and highways. This could result in an accident and serious
personal injury. The driver and passenger must be prepared to brace themselves in the event the
                                                                                                                           J
retractor does not lock.
1. Fasten drivers seat belt. Buckle a passenger into the seat for the belt that is to be tested.
2. Proceed to the designated safe area.                                                                                   K
3. Drive the vehicle at approximately 16 km/h (10 MPH). Notify any passengers of a pending sudden stop.
    The driver and passenger must be prepared to brace themselves in the event the retractor does not lock.
    Apply brakes firmly and make a very hard stop.
                                                                                                                          L
During stop, seat belts should lock and not be extended. If the seat belt retractor assembly does not lock, per-
form the retractor off-vehicle check.
                                                                                                                          M
SEAT BELT RETRACTOR OFF-VEHICLE CHECK
1.   Remove the seat belt retractor assembly.
2.   Slowly pull out belt while tilting the retractor assembly forward from the mounted position without twisting
     the retractor assembly as shown in the illustration.
        15 degrees or less tilt       : Belt can be pulled out.
        35 degrees or more tilt       : Belt locks and cannot be pulled out.




Revision: September 2006                               SB-9                                               2007 Xterra
                                                          SEAT BELTS




                                                                                                                               LHIA0104E


     1. 15 degrees or less tilt               2.   35 degrees or more tilt                 A. Front seat belt (installed position)
     B. Rear seat belt (installed position)   C.   Center seat belt (installed position)

3.     If the retractor does not operate within specifications, replace the retractor assembly.




Revision: September 2006                                        SB-10                                                         2007 Xterra
       LATCH (LOWER ANCHORS AND TETHER FOR CHILDREN) SYSTEM

LATCH (LOWER ANCHORS AND TETHER FOR CHILDREN) SYSTEM                             PFP:75466
                                                                                               A
Removal and Installation                                                            EHS001DN


NOTE:
The LATCH (Lower Anchors and Tether for Children) system is not serviceable.                   B



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Revision: September 2006                        SB-11                          2007 Xterra
                           TOP TETHER STRAP CHILD RESTRAINT

TOP TETHER STRAP CHILD RESTRAINT                                    PFP:88000

Removal and Installation                                               EHS001DO


NOTE:
The Top Tether Strap Child Restraint system is not serviceable.




Revision: September 2006                          SB-12           2007 Xterra



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