NISSAN PATROL 1998 Y61 / 5.G Restraint System Workshop Manual

RESTRAINT SYSTEM
SECTION
RS
CONTENTS
PRECAUTION..................................................................1
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''...............1
SEAT BELTS...................................................................2
Front Seat Belt.............................................................3
Rear Seat Belt .............................................................5
3rd Seat Belt ................................................................7
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)............8
Precautions for SRS ``AIR BAG'' and ``Seat Belt
Pre-tensioner'' Service.................................................8
Special Service Tools ..................................................8
Description .................................................................10
SRS Component Parts Location ...............................10
Maintenance Items .................................................... 11
Removal and Installation Ð Diagnosis Sensor
Unit and Seat Belt Pre-tensioner...............................12
Removal and Installation Ð Air Bag Module and
Spiral Cable ...............................................................13
Removal Ð Air Bag Module and Spiral Cable ..........13
Removal Ð Front Passenger Air Bag Module ..........14
Installation Ð Air Bag Module and Spiral Cable .......16Installation Ð Front Passenger Air Bag Module .......16
Disposal of Air Bag Module and Seat Belt Pre-
tensioner ....................................................................17
TROUBLE DIAGNOSES Ð Supplemental
Restraint System (SRS)...............................................22
Trouble Diagnoses Introduction.................................22
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................24
Schematic ..................................................................26
Wiring Diagram Ð SRS Ð ........................................27
SRS Operation Check ...............................................30
Trouble Diagnoses with CONSULT ...........................32
Trouble Diagnoses without CONSULT ......................39
Trouble Diagnoses: ``AIR BAG'' Warning Lamp
Does Not Turn Off .....................................................43
Trouble Diagnoses: ``AIR BAG'' Warning Lamp
Does Not Turn On .....................................................43
Trouble Diagnoses: SRS Does Not Enter
Diagnosis Mode Using Door Switch ..........................44
COLLISION DIAGNOSIS...............................................45
When you read wiring diagrams:
+Read GI section, ``HOW TO READ WIRING DIAGRAMS''.
+See EL section, ``POWER SUPPLY ROUTING'' for power distribution circuit.
When you perform trouble diagnoses, read GI section, ``HOW TO FOLLOW FLOW
CHART IN TROUBLE DIAGNOSES'' and ``HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT''.
RS

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 in a frontal collision.
The SRS composition which is available to NISSAN MODEL Y61 is as follows (The composition varies
according to the destination.):
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), seat belt pre-tensioner, a diagnosis sensor unit, warning lamp,
wiring harness and spiral cable.
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 in¯ation, all maintenance must be performed
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 either just before
the harness connectors or for the complete harness are related to the SRS.
PRECAUTION
RS-1

CAUTION:
+Before removing the seat belt pre-tensioner assembly (if equipped), turn the ignition switch off,
disconnect both battery cables and wait at least 3 minutes.
+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'' (RS-30) for details.
+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 any collision, inspect all seat belt assemblies, including retractors and other attached hard-
wares (i.e., guide rail set).
SEAT BELTS
RS-2

Front Seat Belt
REMOVAL (WAGON)
V1Remove front seat. Refer to ``SEAT'' in BT section for details.
V2Remove adjuster cover.
V3Slide ¯oor anchor cover.
V4Remove ¯oor anchor bolt.
V5Remove shoulder anchor bolt.
V6Remove center pillar upper and lower garnish. Refer to ``Side and Floor Trim'' in BT section for details.
V7Remove bolts securing second sash guide, then remove second sash guide.
V8Remove the bolt securing seat belt pre-tensioner retractor, then remove seat belt and seat belt pre-ten-
sioner retractor.
V9Remove bolts securing seat belt adjuster, then remove seat belt adjuster.
SRS446
SEAT BELTS
RS-3

REMOVAL (HARDTOP)
V1Remove front seat. Refer to ``SEAT'' in BT section for details.
V2Remove adjuster cover.
V3Remove lap outer cover. Refer to ``Side and Floor Trim'' in BT section for details.
V4Slide ¯oor anchor cover.
V5Remove ¯oor anchor bolt.
V6Remove shoulder anchor bolt.
V7Remove luggage side upper and lower ®nisher. Refer to ``Side and Floor Trim'' in BT section for details.
V8Remove the bolt securing seat belt pre-tensioner retractor, then remove seat belt and seat belt pre-ten-
sioner retractor.
V9Remove bolts securing seat belt adjuster, then remove seat belt adjuster.
SRS447
SEAT BELTS
Front Seat Belt (Cont'd)
RS-4

Rear Seat Belt
REMOVAL (WAGON)
V1Remove rear and 3rd seats. Refer to ``SEAT'' in BT section for details.
V2Slide anchor cover.
V3Remove anchor bolt.
V4Remove luggage upper and lower ®nishers. Refer to ``Side and Floor Trim'' in BT section for details.
V5Remove shoulder anchor bolt.
V6Remove the bolt and anchor bolt securing seat belt retractor, then remove seat belt and seat belt retrac-
tor.
SRS448
SEAT BELTS
RS-5

REMOVAL (HARDTOP)
V1Fold the rear seat forward.
V2Slide anchor cover.
V3Remove shoulder anchor cover.
V4Remove anchor bolt.
V5Remove shoulder anchor bolt.
V6Remove luggage upper and lower ®nishers. Refer to ``Side and Floor Trim'' in BT section for details.
V7Remove anchor bolt securing seat belt retractor, then remove seat belt and seat belt retractor.
SRS449
SEAT BELTS
Rear Seat Belt (Cont'd)
RS-6

3rd Seat Belt
REMOVAL (WAGON)
V1Remove rear and 3rd seats. Refer to ``SEAT'' in BT section for details.
V2Slide anchor cover.
V3Remove anchor bolt.
V4Remove luggage upper and lower ®nishers. Refer to ``Side and Floor Trim'' in BT section for details.
V5Remove shoulder anchor bolt.
V6Remove anchor bolt securing seat belt retractor, then remove seat belt and seat belt retractor.
SRS450
SEAT BELTS
RS-7

Precautions for SRS ``AIR BAG'' and ``Seat Belt
Pre-tensioner'' Service
+Do not use a circuit tester 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 for 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 ``
S'' 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 it with the pad side facing upward.
+Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
+Instrument panel assembly should be replaced after air bag in¯ates if damaged.
Special Service Tools
Tool number
Tool nameDescriptionApplication
Seat belt
pre-ten-
sionerAir Bag
System
KV99106400
Deployment tool
NT357
Disposing of air bag mod-
ule
XX
KV99105300
Air bag module
bracket
NT354
Anchoring air bag module
ÐX
Special torx bit
NT361
Use for special bolts
[TAMPER RESISTANT
TORX (Size T50)]
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)ÐX
KV999R0020
Deployment tool
adapters for seat
belt pre-tensioner
NT721
XÐ
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-8

Tool number
Tool nameDescriptionApplication
Seat belt
pre-ten-
sionerAir Bag
System
KV99108300
Deployment tool
adapters for pas-
senger air bag
NT722
ÐX
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Special Service Tools (Cont'd)
RS-9