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>> Download RS documenatation <<Text preview - extract from the document RESTRAINT SYSTEM
RS
GI
SECTION MA
EM
LC
CONTENTS
EC
PRECAUTION............................................................. 2 Installation -- Air Bag Module and Spiral
Supplemental Restraint System (SRS) "Air Cable..................................................................... 24
Bag" And "Seat Belt Pre-Tensioner" ................... 2 Installation -- Front Passenger Air Bag FE
SEAT BELTS .............................................................. 3 Module .................................................................. 25
Precaution for Seat Belt Service ............................ 3 Installation -- Side Air Bag Module...................... 26
After A Collision....................................................... 3 Disposal of Air Bag Module and Seat Belt Pre-
CL
Front Seat Belt........................................................ 4 tensioner ............................................................... 26
Rear Seat Belt ........................................................ 6 Deployment of Side Air Bag Module MT
Seat Belt Inspection................................................ 8 (Built-in type) (Outside of vehicle)................ 29
Tether Anchor Plate .............................................. 11 Deployment Procedures For Seat Belt Pre-
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)..... 12 Tensioner (Outside of Vehicle) ......................... 30 AT
Precautions for SRS "AIR BAG" and "SEAT TROUBLE DIAGNOSES -- Supplemental
BELT PRE-TENSIONER" Service ........................ 12 Restraint System (SRS) .......................................... 33
Special Service Tools............................................ 12 Trouble Diagnoses Introduction ............................ 33 FA
Description ............................................................ 14 How to Perform Trouble Diagnoses for Quick
Seat Belt Pre-tensioner with Load Limiter............ 14 and Accurate Repair ............................................. 35 RA
Built-in Type Side Air Bag..................................... 15 Schematic ............................................................. 37
SRS Component Parts Location........................... 15 Wiring Diagram -- SRS -- ................................... 38
Maintenance Items................................................ 16 Self-diagnosis........................................................ 42 BR
Removal and Installation -- Diagnosis Sensor Trouble Diagnoses for Air Bag Warning Lamp..... 63
Unit, Seat Belt Pre-tensioner and Satellite COLLISION DIAGNOSIS.......................................... 64
Sensor................................................................... 18 For Frontal Collision ......................................... 64 ST
Removal -- Air Bag Module and Spiral Cable ..... 20 SRS inspection............................................. 64
Removal -- Front Passenger Air Bag Module ..... 21 For Side Collision ............................................. 66
RS
Removal -- Side Air Bag Module......................... 23 SRS Inspection (For side collision).............. 66
BT
When you read wiring diagrams: HA
b Read GI section, ``HOW TO READ WIRING DIAGRAMS''.
b See EL section, ``POWER SUPPLY ROUTING'' for power distribution circuit.
When you perform trouble diagnoses, read GI section, ``HOW TO FOLLOW FLOW EL
CHART IN TROUBLE DIAGNOSES'' and ``HOW TO PERFORM EFFICIENT DIAGNO-
SIS FOR AN ELECTRICAL INCIDENT''.
IDX
PRECAUTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) "AIR BAG" AND "SEAT BELT
PRE-TENSIONER"
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 L30 is as follows (the
composition varies according to the destination and optional equipment):
b For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the
steering 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.
b 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 colli-
sion).
WARNING:
b 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 performed by an authorized NISSAN dealer.
b Improper maintenance, including incorrect removal and installation of the SRS, can lead to
personal injury caused by unintentional activation of the system.
b 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 (except "SEAT BELT PRE-TEN-
SIONER") covered with yellow insulation either just before the harness connectors or for the
complete harness are related to the SRS.
RS-2
SEAT BELTS
Precaution for Seat Belt Service
CAUTION:
b Before removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect GI
both battery cables and wait at least 3 minutes.
b Do not use electrical test equipment for seat belt pre-tensioner connector.
b After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre- MA
tensioner connector, check the system function. Refer to "Self-diagnosis" (RS-42) for details.
b Do not use disassemble buckle or seat belt assembly.
b Replace anchor bolts if they are deformed or worn out. EM
b Never oil tongue and buckle.
b If any component of seat belt assembly is questionable, do not repair. Replace the whole seat
belt assembly. LC
b If webbing is cut, frayed, or damaged, replace seat belt assembly.
b When replacing seat belt assembly, use a genuine NISSAN seat belt assembly.
EC
After A Collision
WARNING: FE
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 CL
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 colli- MT
sion in which the air bags are deployed.
Replace any seat belt assembly if:
b The seat belt was in use at the time of a collision (except for minor collisions and the belts, AT
retractors and buckles show no damage and continue to operate properly).
b The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)
FA
b 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.
b Anchor bolts are deformed or worn out. RA
b 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.
BR
ST
RS
BT
HA
EL
IDX
RS-3
SEAT BELTS
Front Seat Belt
REMOVAL AND INSTALLATION
Slide the seat all the way forward and tilt the seat back toward the front.
1 Remove buckle.
Remove front and rear inner kick plates.
2 Remove belt anchor bolts.
Remove center pillar lower garnish. Refer to BT Section, ``Side and Floor Trim''.
3 Remove adjuster cover and upper guide loop anchor bolt.
4 Remove center pillar upper garnish. Refer to BT Section, ``Side and Floor Trim''.
5 Remove two adjuster bolts and adjuster assembly.
6 Disconnect seat belt pre-tensioner connector.
7 Remove seat belt pre-tensioner retractor bolt and screw.
8 Remove seat belt pre-tensioner retractor.
RS-4
SEAT BELTS
Front Seat Belt (Cont'd)
GI
MA
EM
LC
EC
FE
CL
MT
AT
FA
RA
BR
ST
RS
BT
HA
EL
IDX
LRS119
RS-5
SEAT BELTS
Rear Seat Belt
REMOVAL AND INSTALLATION
1 Remove rear seat. Refer to BT section, "SEAT" for details.
2 Remove outer and floor anchor bolt.
3 Remove rear side garnish. Refer to BT section, "Side and Floor Trim" for details.
4 Remove rear parcel shelf finisher. Refer to BT section, "Side and Floor Trim" for details.
5 Remove bolts securing rear seat belt retractor, then remove seat belt and seat belt retractor.
SRS558
RS-6
SEAT BELTS
Rear Seat Belt (Cont'd)
GI
MA
EM
LC
EC
FE
CL
MT
AT
FA
RA
BR
ST
RS
BT
HA
EL
IDX
WRS011
RS-7
SEAT BELTS
Seat Belt Inspection
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 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 colli-
sion in which the air bags are deployed.
Replace any seat belt assembly if:
b The seat belt was in use at the time of a collision (except for minor collisions and the belts, retrac-
tors and buckles show no damage and continue to operate properly).
b The seat belt was damaged in an accident (i.e. torn webbing, bent retractor or guide, etc.).
b 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.
b Anchor bolts are deformed or worn out.
b The seat belt pre-tensioner should be replaced even if the seat belts are not in use during the colli-
sion 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. With driver seat belt unfastened, the seat belt warning lamp should illuminate.
Also, the seat belt warning chime should sound for about seven seconds.
b. Fasten driver seat belt. The seat belt warning lamp should go out and the chime (if sounding)
should stop.
c. If the ``AIR BAG'' warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag
warning lamp. Refer to "Self-diagnosis", "TROUBLE DIAGNOSES -- Supplemental Restraint Sys-
tem (SRS)", RS-42.
2. Check that the seat belt retractor, seat belt anchor and buckle bolts are securely attached.
3. 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.
4. 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 returns smoothly, wipe the inside of the
loops with a clean paper cloth etc. because dirt built up
in the loops of the upper anchors can cause the seat
belts to retractor slowly.
c. Fasten the seat belt. Pull firmly on belt and buckle to
SRS353 ensure belt remains latched. Unfasten seat belt. Ensure
belt releases freely and buckle button returns to original
position.
5. Repeat steps above as necessary to check the other seat
belts.
RS-8
SEAT BELTS
Seat Belt Inspection (Cont'd)
ON-VEHICLE CHECK SEAT BELT RETRACTOR
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE: GI
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 MA
type seat belt retractors except the driver 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 EM
partially, the ALR mode automatically locks the seat belt in a 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. LC
Check the seat belt retractors using the following test(s) to determine if a retractor assembly is operat-
ing properly. EC
ELR function stationary check
Grasp the shoulder belt and pull forward quickly. The retractor should lock and prevent the belt from FE
extending further.
CL
ALR function stationary check
1. Pull out entire length of seat belt from retractor until a click is heard.
2. Retract the belt partially. A clicking noise should be heard as the belt retracts indicating retractor is in MT
the Automatic Locking Retractors (ALR) mode.
3. Grasp the seat belt and try to pull out of retractor. Belt must lock and not extend further. If NG, replace
the retractor assembly. AT
4. Allow the entire length of belt to retract to cancel the ALR mode.
ELR function moving check FA
WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for
RA
example, a 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 them- BR
selves in the event the retractor does not lock.
1. Fasten driver's seat belt. Buckle a passenger into the seat for the belt. ST
2. Proceed to the designated safe area.
3. Drive the vehicle at approximately 16 km/h (10 MPH). Notify any passengers of the pending sudden
stop and the driver and passenger must be prepared to brace themselves in the event the retractor RS
does not lock. Apply brakes firmly and make a very hard stop.
During the stop, seat belts should lock and not extend. If the seat belt retractor assembly does not lock,
perform the retractor off-vehicle check. BT
HA
EL
IDX
RS-9
SEAT BELTS
Seat Belt Inspection (Cont'd)
OFF-VEHICLE CHECK SEAT BELT RETRACTOR
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.
WRS016
If NG, replace the retractor assembly.
RS-10
SEAT BELTS
Tether Anchor Plate
REMOVAL AND INSTALLATION
GI
CAUTION:
Replace anchor bolts if they are deformed or worn out.
MA
EM
LC
EC
FE
CL
MT
AT
FA
RA
SRS719
1. Remove tether anchor plate cover. Refer to BT section ``SIDE AND FLOOR TRIM'' for details. BR
2. Remove tether anchor plate.
NOTE: ST
b To install, reverse the removal procedure sequence.
RS
BT
HA
EL
IDX
RS-11
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Precautions for SRS "AIR BAG" and "SEAT
BELT PRE-TENSIONER" Service
b Do not use a circuit tester to check SRS circuits unless instructed to in this Service Manual.
b 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.
b 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.
b 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.
b Handle air bag module carefully. Always place driver and passenger air bag modules with the pad
side facing upward, and side air bag module with the stud bolt side facing down.
b Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
b After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.) Description
Tool name
KV99106400 Disposing of air bag module
(J38381)
Deployment tool
NT357
KV991065S0 * Deployment tool adapters for seat belt
(J38381-30) pre-tensioner and for passenger air bag
Deployment tool module with black connector are not nec-
adapters essary for servicing NISSAN L30
NT743
(J-42057) Removing and installing air bag locks
Air bag lock master
key set
LRS210
RS-12
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Special Service Tools (Cont'd)
Tool number
(Kent-Moore No.) Description
Tool name GI
KV99105300 Anchoring air bag module
(J41246)
Air bag module bracket MA
NT354
EM
KV99108300
(J38381-35) LC
Deployment tool adapter for
passenger air bag
EC
NT775
KV99108200
(J38381-50) FE
Deployment tool adapter for
seat belt pre-tensioner
CL
NT721
KV99109000 MT
(J44230)
Deployment tool adapters for
built-in type side air bag AT
NT767
FA
*: Special tool or commercial equivalent
RA
BR
ST
RS
BT
HA
EL
IDX
RS-13
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Description
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in "ON" or "START"
position.
SRS585-B
The collision modes for which supplemental restraint systems are activated are different among the SRS
systems. For example, the driver air bag module and passenger air bag module are activated in a fron-
tal 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 -- --
Passenger air bag module -- --
Seat belt pre-tensioner LH -- --
Seat belt pre-tensioner RH -- --
Side air bag module LH -- --
Side air bag module RH -- --
Seat Belt Pre-tensioner with Load Limiter
The seat belt pre-tensioner system with load limiter is installed
to both the driver seat and the front passenger seat. It operates
simultaneously with the SRS air bag system in the event of a
frontal 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 fac-
tors is immediately taken up by the pre-tensioner. Vehicle pas-
sengers are securely restrained.
SRS444
RS-14
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Seat Belt Pre-tensioner with Load Limiter
(Cont'd)
When passengers in a vehicle are thrown forward in a collision
and the restraining force of the seat belt exceeds a specified GI
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. MA
EM
LC
Built-in Type Side Air Bag
Front side air bag is built-in type.
The front seat backs with built-in type side air bag have the EC
labels shown in the figure at left.
FE
CL
WRS017
MT
SRS Component Parts Location
AT
FA
RA
BR
ST
RS
BT
HA
EL
LRS120
IDX
RS-15
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Maintenance Items
CAUTION:
Do not use a circuit tester to check SRS circuit.
1. Check operation of "AIR BAG" warning lamp.
After turning ignition key to "ON" position, the air bag warn-
ing lamp will illuminate. The "AIR BAG" warning lamp will go
off after about 7 seconds if no malfunction is detected.
If any of the following warning lamp conditions occur, imme-
diately check the air bag system. Refer to RS-42 for details.
LRS122
b The "AIR BAG" warning lamp does not illuminate when the
ignition switch is turned "ON".
b The "AIR BAG" warning lamp does not go off about 7 sec-
onds after the ignition switch is turned "ON".
b The "AIR BAG" warning lamp blinks after about 7 seconds
after the ignition switch is turned "ON".
2. Visually check SRS components.
(a) Diagnosis sensor unit
b Check diagnosis sensor unit and bracket for dents, cracks
and deformities.
b Check connectors for damage and terminals for deformities.
(b) Air bag module and steering wheel
b Remove air bag module from steering wheel, instrument
panel and remove the front seat back assemblies. Check
harness cover and connectors for damage, terminals for
deformities, and harness for binding.
b Install driver air bag module to steering wheel to check fit
or alignment with the wheel.
b Check steering wheel for excessive free play.
b Install passenger air bag module to instrument panel to
check fit or alignment with the instrument panel.
b Install front seat back assemblies.
(c) Spiral cable
b Check spiral cable for dents, cracks and deformities.
b Check connectors and protective tape for damage.
b Check steering wheel for noise, binding and heavy opera-
tion.
(d) Main harness, air bag harness, body harness, side air bag
module sub-harness
b Check connectors for poor connections, damage, and ter-
minals for deformities.
b Check harnesses for binding, chafing and cuts.
(e) Seat belt pre-tensioner
b Check harness cover and connectors for damage, terminals
for deformities, and harness for binding.
b Check belts for damage and anchors for loose mounting.
b Check retractor for smooth operation.
b Perform self-diagnosis for SRS operation by using air bag
warning lamp or CONSULT-II. Refer to "Self-diagnosis" for
details. (RS-42)
(f) Satellite sensor
b Check satellite sensor (including bracket portion) for dents,
cracks or deformities.
RS-16
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Maintenance Items (Cont'd)
b Check connectors for damage, and terminals for deformi-
ties.
GI
CAUTION:
Replace previously used special bolts with new ones.
MA
EM
LC
EC
FE
CL
MT
AT
FA
RA
BR
ST
RS
BT
HA
EL
IDX
RS-17
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Removal and Installation -- Diagnosis Sensor
Unit, Seat Belt Pre-tensioner and Satellite
Sensor
CAUTION:
b Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
b 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.
b Check diagnosis sensor unit, seat belt pre-tensioner and satellite sensor for proper installa-
tion.
b Check diagnosis sensor unit and satellite sensor to ensure they are free of deformities, dents,
cracks or rust. If they show any visible signs of damage, replace them with new ones.
b Check diagnosis sensor unit brackets to ensure they are free of deformities and rust.
b After replacement of diagnosis sensor unit, seat belt pre-tensioner and satellite sensor, check
SRS function and perform self-diagnosis for SRS. Refer to "Self-diagnosis" for details. (RS-42)
b Do not attempt to disassemble diagnosis sensor unit, seat belt pre-tensioner and satellite
sensor.
b Replace diagnosis sensor unit, seat belt pre-tensioner and satellite sensor if it has been
dropped or sustained an impact.
b Do not expose seat belt pre-tensioner to temperatures exceeding 80
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