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rs


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                                                                                                  RESTRAINT SYSTEM


                                                                                             SECTION                       RS
                                                              CONTENTS
SEAT BELTS ...................................................................3        INSTALLATION........................................................28
  Precautions ..................................................................3   Front Side Air Bag Module ........................................28
       SUPPLEMENTAL RESTRAINT SYSTEM (SRS)                                             REMOVAL ...............................................................28
       AIR BAG AND SEAT BELT PRE-TENSIONER ........3                                   INSTALLATION........................................................29
       PRECAUTION FOR SEAT BELT SERVICE ..................3                         Disposal of Air Bag Module and Seat Belt Pre-
   Front Seat Belt.............................................................5    tensioner ....................................................................30
      REMOVAL AND INSTALLATION .................................5                      CHECKING DEPLOYMENT TOOL .............................31
   Rear Seat Belt .............................................................7        DEPLOYMENT PROCEDURES FOR AIR BAG
       REMOVAL AND INSTALLATION (MODELS WITH                                            MODULE (OUTSIDE OF VEHICLE) ...........................32
       BUILT-IN SEAT BELT) ...............................................7             DEPLOYMENT PROCEDURES FOR SEAT BELT
       REMOVAL AND INSTALLATION (MODELS WITH                                            PRE-TENSIONER (OUTSIDE OF VEHICLE) ..............34
       ROOF SEAT BELT) .................................................10              DEPLOYMENT OF AIR BAG MODULE AND SEAT
       REMOVAL AND INSTALLATION (MODELS WITH                                            BELT PRE-TENSIONER WHILE MOUNTED IN
       2-POINTS CENTER SEAT BELT)..............................13                       VEHICLE .................................................................35
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) .........16                                         DISPOSING OF AIR BAG MODULE AND SEAT
  Precautions ................................................................16        BELT PRE-TENSIONER ...........................................36
       SUPPLEMENTAL RESTRAINT SYSTEM (SRS)                                          Trouble Diagnoses Introduction.................................37
       AIR BAG AND SEAT BELT PRE-TENSIONER ......16                                    DIAGNOSIS FUNCTION ...........................................37
       PRECAUTIONS FOR SRS AIR BAG AND SEAT                                            DIAGNOSIS MODE FOR CONSULT-II .......................37
       BELT PRE-TENSIONER SERVICE...........................16                             HOW TO CHANGE SELF-DIAGNOSIS MODE
       WIRING DIAGRAMS AND TROUBLE DIAGNOSIS .....16                                    WITH CONSULT-II ...................................................38
   Preparation ................................................................17          HOW TO CHANGE SELF-DIAGNOSIS MODE
      SPECIAL SERVICE TOOLS ......................................17                    WITHOUT CONSULT-II ............................................38
      COMMERCIAL SERVICE TOOL ................................18                        HOW TO ERASE SELF-DIAGNOSIS RESULTS .........38
   SRS Configuration .....................................................18        How to Perform Trouble Diagnoses for Quick
   Seat Belt Pre-tensioner with Load Limiter.................19                     and Accurate Repair ..................................................40
   Built-in Type Side Air Bag..........................................19             INFORMATION FROM CUSTOMER ..........................40
                                                                                      PRELIMINARY CHECK ............................................40
   SRS Component Parts Location ...............................20
                                                                                      WORK FLOW ..........................................................41
   Maintenance Items ....................................................20
                                                                                    Wiring Diagram - SRS -.............................................42
   Diagnosis Sensor Unit ...............................................21
                                                                                        MODELS WITH FRONT SEAT BELT
      REMOVAL AND INSTALLATION ...............................21
                                                                                        PRE-TENSIONER B21, B27 .....................................43
   Front Seat Belt Pre-tensioner....................................22
                                                                                        MODELS WITH FRONT SEAT BELT
      REMOVAL AND INSTALLATION ...............................22
                                                                                        PRE-TENSIONER B52, B53 .....................................44
   Side Air Bag (Satellite) Sensor..................................23              SRS Operation Check ...............................................45
      REMOVAL AND INSTALLATION ...............................23
                                                                                      DIAGNOSTIC PROCEDURE 1 ..................................45
   Driver Air Bag Module and Spiral Cable ...................24                       Trouble Diagnoses with CONSULT-II...................46
      REMOVAL AND INSTALLATION ...............................24
                                                                                      DIAGNOSTIC PROCEDURE 2 ..................................46
      REMOVAL ...............................................................24
                                                                                      DIAGNOSTIC PROCEDURE 3 ..................................49
      INSTALLATION........................................................26
                                                                                        DIAGNOSTIC PROCEDURE 4 (CONTINUED
   Front Passenger Air Bag Module ..............................27                      FROM DIAGNOSTIC PROCEDURE 2) ......................51
      REMOVAL ...............................................................27
                                              CONTENTS                              (Cont'd)
   DIAGNOSTIC PROCEDURE 5 ..................................51                   DIAGNOSTIC PROCEDURE 9 ..................................63
    Trouble Diagnoses without CONSULT-II..............55                      Trouble Diagnoses: AIR BAG Warning Lamp
   DIAGNOSTIC PROCEDURE 6 ..................................55                Does Not Turn On .....................................................65
   DIAGNOSTIC PROCEDURE 7 ..................................60                   DIAGNOSTIC PROCEDURE 10 ................................65
   DIAGNOSTIC PROCEDURE 8 (CONTINUED                                          Collision Diagnosis ....................................................66
   FROM DIAGNOSTIC PROCEDURE 6) ......................62                         FOR FRONTAL COLLISION .....................................66
Trouble Diagnoses: AIR BAG Warning Lamp                                          FOR SIDE COLLISION .............................................68
Does Not Turn Off .....................................................63




                                                                       RS-2
                                               SEAT BELTS
                                                                                                       Precautions

                                            Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) "AIR BAG" AND "SEAT BELT
PRE-TENSIONER"                                                                                              NLRS0001
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to NISSAN MODEL V10 is as follows (The composition var-
ies according to the destination and optional equipment.):
+ For a frontal collision
     The Supplemental Restraint System consists of driver's air bag module (located in the center of the steer-
     ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
     belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+ For a side collision
     The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
     seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
     collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
WARNING:
+ 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 should be per-
     formed by an authorized NISSAN dealer.
+ Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
     sonal injury caused by unintentional activation of the system.
+ Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
     Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
     before the harness connectors or for the complete harness are related to the SRS.
PRECAUTION FOR SEAT BELT SERVICE                                                                            NLRS0002
CAUTION:
+ Before removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect both
  battery cables and wait at least 3 minutes.
+ Do not use electrical test equipment for seat belt pre-tensioner connector.
+ After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
  sioner connector, check the system function. Refer to "SRS Operation Check" for details. (RS-45)
+ Do not disassemble buckle or seat belt assembly.
+ Replace anchor bolts if they are deformed or worn out.
+ Never oil tongue and buckle.
+ If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
  assembly.
+ If webbing is cut, frayed, or damaged, replace seat belt assembly.
+ When replacing seat belt assembly, use a genuine seat belt assembly.
After A Collision                                                                                         NLRS0002S01
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
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 colli-
sion 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 if:
+ 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).
+ The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)
+ The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for dam-
    age or distortion and repair as necessary before installing a new seat belt assembly.
+ Anchor bolts are deformed or worn out.


                                                     RS-3
                       SEAT BELTS
Precautions (Cont'd)




                                    NRS127




                          RS-4
                                            SEAT BELTS
                                                                                               Front Seat Belt

                                          Front Seat Belt
REMOVAL AND INSTALLATION                                                                               =NLRS0056
1. Slide the seat all the way forward. Tilt the seatback toward the front and remove the rear floor boxes.
2. Remove adjuster cover.
3. Remove floor anchor bolt.
4. Remove shoulder anchor bolt.
5. Remove front and rear kicking plate, then remove center pillar upper and lower garnish. Refer to BT-28,
   "SIDE AND FLOOR TRIM" for details.
6. Disconnect seat belt pre-tensioner connector.
7. Remove the screw securing seat belt pre-tensioner retractor, then remove seat belt and seat belt pre-ten-
   sioner retractor.
8. Remove bolts securing seat belt adjuster, then remove seat belt adjuster.




                                                                                                      NRS096




                                                  RS-5
                           SEAT BELTS
Front Seat Belt (Cont'd)




                                        NRS097




                              RS-6
                                         SEAT BELTS
                                                                                        Rear Seat Belt

                                       Rear Seat Belt
REMOVAL AND INSTALLATION (MODELS WITH BUILT-IN SEAT BELT)                                      =NLRS0058
1. Remove the outer rear seats. Refer to BT-49, "REAR SEAT" for details.
2. Remove lower seat trim.
3. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and seat belt buckles can
   be removed.
4. Remove the center seat. Refer to BT-49, "REAR SEAT" for details.
5. Remove lower seat trim and rear back seat garnish.
6. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and the seat belt - bracket,
   - retractor and - buckle can be removed.
7. Remove rear side garnish. Refer to BT-28, "SIDE AND FLOOR TRIM" for details.
8. Remove bolts securing rear seat belt retractor, then remove seat belt and seat belt retractor.




                                                                                              NRS098




                                              RS-7
                          SEAT BELTS
Rear Seat Belt (Cont'd)




                                       NRS099




                             RS-8
SEAT BELTS
             Rear Seat Belt (Cont'd)




                            NRS100




   RS-9
                                          SEAT BELTS
Rear Seat Belt (Cont'd)

REMOVAL AND INSTALLATION (MODELS WITH ROOF SEAT BELT)                                          =NLRS0063
1. Remove the outer rear seats. Refer to BT-49, "REAR SEAT" for details.
2. Remove lower seat trim.
3. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and seat belt buckles can
   be removed.
4. Remove the center seat. Refer to BT-49, "REAR SEAT" for details.
5. Remove lower seat trim.
6. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and the seat belt - bracket,
   and - buckle can be removed.
7. Remove cover garnish at headlining. Refer to BT-28, "SIDE AND FLOOR TRIM" for details. Then remove
   seat belt retractor.
8. Remove rear side garnish. Refer to BT-28, "SIDE AND FLOOR TRIM" for details.
9. Remove bolts securing rear seat belt retractor, then remove seat belt and seat belt retractor.




                                                                                              NRS128



                                              RS-10
SEAT BELTS
             Rear Seat Belt (Cont'd)




                            NRS099




  RS-11
                          SEAT BELTS
Rear Seat Belt (Cont'd)




                                       NRS133




                            RS-12
                                         SEAT BELTS
                                                                                 Rear Seat Belt (Cont'd)

REMOVAL AND INSTALLATION (MODELS WITH 2-POINTS CENTER SEAT BELT)                                 =NLRS0064
1. Remove the outer rear seats. Refer to BT-49, "REAR SEAT" for details.
2. Remove lower seat trim.
3. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and seat belt buckles can
   be removed.
4. Remove the center seat. Refer to BT-49, "REAR SEAT" for details.
5. Remove lower seat trim and rear back seat garnish.
6. Remove the special bolts, using the TAMPER RESISTANT TORX (Size T50) and the seat belt - bracket,
   buckle can be removed.
7. Remove rear side garnish. Refer to BT-28, "SIDE AND FLOOR TRIM" for details.
8. Remove bolts securing rear seat belt retractor, then remove seat belt and seat belt retractor.




                                                                                                NRS129




                                              RS-13
                          SEAT BELTS
Rear Seat Belt (Cont'd)




                                       NRS099




                            RS-14
SEAT BELTS
             Rear Seat Belt (Cont'd)




                            NRS130




  RS-15
                        SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Precautions

                                            Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) "AIR BAG" AND "SEAT BELT
PRE-TENSIONER"                                                                                              NLRS0006
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to NISSAN MODEL V10 is as follows (The composition var-
ies according to the destination and optional equipment.):
+ For a frontal collision
     The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
     ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
     belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+ For a side collision
     The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
     seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
     collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
WARNING:
+ 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 should be per-
     formed by an authorized NISSAN dealer.
+ Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
     sonal injury caused by unintentional activation of the system.
+ Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
     Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
     before the harness connectors or for the complete harness are related to the SRS.
PRECAUTIONS FOR SRS "AIR BAG" AND "SEAT BELT PRE-TENSIONER" SERVICE                                         NLRS0007
+   Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
+   Before servicing the SRS, turn ignition switch "OFF", disconnect both battery cables and wait at least 3
    minutes.
    For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
    pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
    have passed.
+   Diagnosis sensor unit must always be installed with their arrow marks "" pointing towards the front of
    the vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before
    installation and replace as required.
+   The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
    turn steering wheel or column after removal of steering gear.
+   Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
    side facing upward and place front side air bag module (built-in type) standing with stud bolt side setting
    bottom.
+   Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
+   After air bag inflates, the front instrument panel assembly should be replaced if damaged.
WIRING DIAGRAMS AND TROUBLE DIAGNOSIS                                                                       NLRS0008
When you read wiring diagrams, refer to the following:
+ GI-11, "HOW TO READ WIRING DIAGRAMS"
+ EL-10, "POWER SUPPLY ROUTING" for power distribution circuit
When you perform trouble diagnosis, refer to the following:
+ GI-32, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSIS"
+ GI-21, "HOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT"




                                                    RS-16
                            SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
                                                                                               Preparation

                                                   Preparation
SPECIAL SERVICE TOOLS                                                                              =NLRS0009


 Tool number
                                     Description
 Tool name

 KV99106400                                                      Disposing of air bag module
 Deployment tool




                                     NT357

 KV99105300                                                      Anchoring air bag module
 Air bag module bracket




                                     NT354

 HT61961000 and                                                  Use for special bolts [TAMPER RESIS-
 HT62152000 combined                                             TANT TORX (Size T50)]
 *Special torx bit                                               a: 3.5 (0.138) dia.
                                                                 b: 8.5 - 8.6 (0.335 - 0.339) dia.
                                                                 c: approx. 10 (0.39) sq.
                                                                 Unit: mm (in)

                                     NT361

 KV99108300
 Deployment tool adapter for front
 passenger air bag
 Deployment tool adapter for front
 side air bag




                                     NT823

 KV99108200
 Deployment tool adapter for front
 seat belt pre-tensioner




                                     NT796

*: Special tool or commercial equivalent




                                                        RS-17
                           SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Preparation (Cont'd)

COMMERCIAL SERVICE TOOL                                                                                        NLRS0040


 Tool name                 Description

 Tamper resistant torx                                              Size: T30
 socket




                           NT757


                                           SRS Configuration                                                   NLRS0010




                                                                                                            SRS585-D


The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the "ON" or "START"
position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module and front passenger air bag module are activated in a frontal
collision but not in a side collision.
SRS configurations which are activated for some collision modes are as follows:
                 SRS configuration              Frontal collision       Left side collision   Right side collision

 Driver air bag module                                 j                        --                    --

 Front passenger air bag module                        j                        --                    --

 Front LH seat belt pre-tensioner                      j                        --                    --

 Front RH seat belt pre-tensioner                      j                        --                    --

 Front LH side air bag module                          --                       j                     --

 Front RH side air bag module                          --                       --                    j




                                                  RS-18
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
                                               Seat Belt Pre-tensioner with Load Limiter

               Seat Belt Pre-tensioner with Load Limiter                         =NLRS0034
               The seat belt pre-tensioner system with load limiter is installed to
               both the driver's seat and the front passenger's seat. It operates
               simultaneously with the SRS air bag system in the event of a fron-
               tal collision with an impact exceeding a specified level.
               When the frontal collision with an impact exceeding a specified
               level occurs, seat belt slack resulting from clothing or other factors
               is immediately taken up by the pre-tensioner. Vehicle passengers
               are securely restrained.
               When passengers in a vehicle are thrown forward in a collision and
      SRS444
               the restraining force of the seat belt exceeds a specified level, the
               load limiter permits the specified extension of the seat belt by the
               twisting of the ELR shaft, and a relaxation of the chest-area seat
               belt web tension while maintaining force.




               Built-in Type Side Air Bag                                        NLRS0035
               Front side air bag is built-in type.
               The front seat backs with built-in type front side air bag have the
               labels shown in figure at left.




      NRS101




                       RS-19
                       SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS Component Parts Location

                                          SRS Component Parts Location                                  NLRS0011




                                                                                                       NRS102




                                          Maintenance Items                                             NLRS0012
                                          CAUTION:
                                          Do not use electrical test equipment to check SRS circuit.
                                          1. Check operation of "AIR BAG" warning lamp.
                                             After turning ignition key to "ON" position, "AIR BAG" warning
                                             lamp illuminates. The "AIR BAG" warning lamp will go off after
                                             about 7 seconds if no malfunction is detected. If any of the fol-
                                             lowing "AIR BAG" warning lamp conditions occur, immediately
                                             check the air bag system. Refer to RS-45 for details.
                                          + The "AIR BAG" warning lamp does not illuminate when the
                               SRS797-A      ignition switch is turned "ON".
                                          + The "AIR BAG" warning lamp does not go off about 7 seconds
                                             after the ignition switch is turned "ON".
                                          + The "AIR BAG" warning lamp blinks after about 7 seconds after
                                             the ignition switch is turned "ON".
                                          2. Visually check SRS components.
                                          1) Diagnosis sensor unit
                                          + Check diagnosis sensor unit and bracket for dents, cracks and
                                             deformities.
                                          + Check connectors for damage, and terminals for deformities.
                                          2) Air bag module and steering wheel
                                          + Remove air bag module from steering wheel, instrument panel

                                                 RS-20
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
                                                    Maintenance Items (Cont'd)
             or seatback. Check harness cover and connectors for damage,
             terminals for deformities, and harness for binding.
          + Install driver air bag module to steering wheel to check fit or
             alignment with the wheel.
          + Check steering wheel for excessive free play.
          + Install front passenger air bag module to instrument panel to
             check fit or alignment with the instrument panel.
          + Install front side air bag module to seatback to check fit and
             alignment with the seat.
          3) Spiral cable
          + Check spiral cable for dents, cracks, or deformities.
          + Check connectors and protective tape for damage.
          + Check steering wheel for noise, binding or heavy operation.
          4) Main harness, body harness, side air bag module sub-harness
          + Check connectors for poor connections, damage, and termi-
             nals for deformities.
          + Check harnesses for binding, chafing or cut.
          5) Front seat belt pre-tensioner
          + Check harness cover and connectors for damage, terminals
             for deformities, and harness for binding.
          + Check belts for damage and anchors for loose mounting.
          + Check retractor for smooth operation.
          + Perform self-diagnosis for seat belt pre-tensioner using "AIR
             BAG" warning lamp or CONSULT-II.
             Refer to "SRS Operation Check" for details. (RS-45)
          6) Side air bag (satellite) sensor
          + Check side air bag (satellite) sensor (including bracket portion)
             for dents, cracks or deformities.
          + Check connectors for damage, and terminals for deformities.
          CAUTION:
          Replace previously used special bolts and ground bolt with
          new ones.

          Diagnosis Sensor Unit
          REMOVAL AND INSTALLATION                                      NLRS0013
          CAUTION:
          + Before servicing SRS, turn the ignition switch off, discon-
             nect both battery cables and wait at least 3 minutes.
          + The special bolts are coated with bonding agent while the
             other bolt is for ground. Do not use old bolts after
             removal; replace with new ones.
          + Check diagnosis sensor unit for proper installation.
          + Check diagnosis sensor unit to ensure it is free of
             deformities, dents, cracks or rust. If they show any visible
             signs of damage, replace them with new ones.
          + Check diagnosis sensor unit brackets to ensure they are
             free of deformities or rust.
          + Replace diagnosis sensor unit if it has been dropped or
             sustained an impact.
          + After replacement of diagnosis sensor unit, perform self-
             diagnosis for SRS. Refer to "SRS Operation Check" for
             details. (RS-45)




                 RS-21
                         SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Diagnosis Sensor Unit (Cont'd)
                                          1. Disconnect driver, front passenger and front side air bag mod-
                                             ule connectors. Also, disconnect front seat belt pre-tensioner
                                             connector.
                                          2. Remove console box. Refer to BT-22, " INSTRUMENT PANEL
                                             ASSEMBLY".
                                          3. Disconnect diagnosis sensor unit connector.
                                          4. Remove ground bolt and also remove special bolts using the
                                             TAMPER RESISTANT TORX (Size T50), from diagnosis sen-
                                             sor unit.
                                             Then remove the diagnosis sensor unit.
                                 SRS818   NOTE:
                                          + To install, reverse the removal procedure sequence.




                                          Front Seat Belt Pre-tensioner
                                          REMOVAL AND INSTALLATION                                    NLRS0036
                                          CAUTION:
                                          + Before servicing SRS, turn the ignition switch off, discon-
                                               nect both battery cables and wait at least 3 minutes.
                                          + Check front seat front belt pre-tensioner with load limiter
                                               for proper installation.
                                          + After replacement of front seat belt pre-tensioner, check
                                               SRS function and perform self-diagnosis for SRS.
                                               Refer to "SRS Operation Check" for details. (RS-45)
                                 NRS103
                                          + Do not attempt to disassemble front seat belt pre-ten-
                                               sioner with load limiter.
                                          + Replace front seat belt pre-tensioner if it has been
                                               dropped or sustained an impact.
                                          + Do not expose front seat belt pre-tensioner to tempera-
                                               tures exceeding 80



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