1998 NISSAN PATROL belt

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

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, both warning lamps
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, immedi-
ately check the air bag or seat belt pre-tensioner system. Refer
to RS-30 for details.
+The ``AIR BAG'' warning lamp does not illuminate when the
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 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 or
deformities.
+Check connectors for damage, and terminals for deformities.
(2) Air bag module and steering wheel
+Remove air bag module from steering wheel or instrument
panel. Check harness cover and connectors for damage, ter-
minals for deformities, and harness for binding.
+Install driver air bag module to steering wheel to check ®t or
alignment with the wheel.
+Check steering wheel for excessive free play.
+For dual air bag system, install passenger air bag module to
instrument panel to check ®t or alignment with the instrument
panel.
(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) Harness related to SRS
+Check connectors for poor connections, damage, and terminals
for deformities.
+Check harnesses for binding, cha®ng or cut.
(5) 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
bulb or CONSULT. Refer to ``SRS Operation Check'' for details.
(RS-30)
CAUTION:
Replace previously used special bolts, ground bolt and anchor
bolt with new ones.
SRS451
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-11

Removal and Installation Ð Diagnosis Sensor
Unit and Seat Belt Pre-tensioner
CAUTION:
+Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait for 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 and seat belt pre-tensioner for proper installation.
+Check diagnosis sensor unit to ensure they are 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 and seat belt pre-tensioner if they have been dropped or sustained
an impact.
+After replacement of diagnosis sensor unit and seat belt pre-tensioner, check SRS function and
perform self-diagnosis for SRS. Refer to ``SRS Operation Check'' for details (RS-30).
+Do not attempt to disassemble diagnosis sensor unit and seat belt pre-tensioner.
+Do not expose seat belt pre-tensioner to temperatures exceeding 80ÉC (176ÉF).
REMOVAL OF DIAGNOSIS SENSOR UNIT
1. Disconnect driver and passenger air bag module connectors.
Also, disconnect seat belt pre-tensioner connector.
2. Remove console ®nisher, console box assembly and instru-
ment panel stay cover. Refer to ``INSTRUMENT PANEL'' in BT
section.
3. Remove rear heater duct and foot duct. (If equipped with rear
heater duct and foot duct.)
4. Remove bolt and also remove special bolts using the TAMPER
RESISTANT TORX (Size T50), from diagnosis sensor unit.
5. Disconnect diagnosis sensor unit connector. Then remove the
diagnosis sensor unit.
NOTE:
+To install, reverse the removal procedure sequence.
REMOVAL OF SEAT BELT PRE-TENSIONER
For removal of seat belt pre-tensioner, refer to ``Front Seat Belt'' for
details. (RS-3)
NOTE:
+To install, reverse the removal procedure sequence.
SRS453
SRS454
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
RS-12

4. Install glove box assembly. (Glove box lid is open.)
5. Close the glove box lid.
Disposal of Air Bag Module and Seat Belt Pre-
tensioner
+Before disposing of air bag module and seat belt pre-tensioner, or vehicles equipped with such systems,
deploy the systems. If such systems have already been deployed due to an accident, dispose of as indi-
cated in ``DISPOSING OF AIR BAG MODULE AND SEAT BELT PRE-TENSIONER'' (RS-21).
+When deploying the air bag module, always use the Special Service Tool; Deployment tool KV99106400,
KV99108200 and KV99108300.
+When deploying the air bag module and seat belt pre-tensioner, stand at least 5 m (16 ft) away from the
deployment component.
+When deploying air bag module and seat belt pre-tensioner, a fairly loud noise is made, followed by smoke
being released. The smoke is not poisonous, however, be careful not to inhale smoke since it irritates throat
and can cause choking.
+Always activate one air bag module at a time.
+Due to heat, leave air bag module unattended for more than 30 minutes after deployment. Also leave seat
belt pre-tensioner unattended for more than 10 minutes after deployment.
+Be sure to wear gloves when handling a deployed air bag module.
+Never apply water to a deployed air bag module.
+Wash your hands clean after ®nishing work.
+Do not dispose of the air bag module un-deployed.
+Place the vehicle outdoors with an open space of at least 6 m (20 ft) on all sides when deploying the air
bag module while mounted in vehicle.
+Use a voltmeter to make sure the vehicle battery is fully charged.
CHECKING DEPLOYMENT TOOL
Connecting to battery
CAUTION:
The battery must show voltage of 9.6V or more.
Remove the battery from the vehicle and place it on dry wood
blocks approximately 5 m (16 ft) away from the vehicle.
+Wait 3 minutes after the vehicle battery is disconnected before
proceeding.
+Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
Make sure the polarity is correct. The right side lamp in the
tool, marked ``deployment tool power'', should glow with a
green light. If the right side lamp glows red, reverse the con-
nections to the battery.
SRS456
SRS005-B
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Installation Ð Front Passenger Air Bag Module
(Cont'd)
RS-17

Deployment tool check
Press the deployment tool switch to the ``ON'' position. The left side
lamp in the tool, marked ``air bag connector voltage'' should illumi-
nate. If it does not illuminate, replace the tool.
Air bag deployment tool lamp illumination chart
(Battery connected)
Switch operationLeft side lamp, green*
``AIR BAG CONNECTOR
VOLTAGE''Right side lamp, green*
``DEPLOYMENT TOOL
POWER''
OFF OFF ON
ON ON ON
*: If this lamp glows red, the tool is connected to the battery incorrectly.
Reverse the connections and make sure the lamp glows green.
DEPLOYMENT PROCEDURES FOR AIR BAG MODULE
(OUTSIDE OF VEHICLE)
Unless the vehicle is being scrapped, deploying the air bag in the
vehicle is not recommended. This may cause damage to the
vehicle interior.
Anchor air bag module in a vise secured to a ®rm foundation dur-
ing deployment.
Deployment of driver's air bag module (outside of
vehicle)
1. Using wire, secure air bag module to air bag module bracket
(SST: KV99105300).
CAUTION:
Use wire of at least 1 mm (0.04 in) diameter.
2. Firmly secure air bag module bracket (SST: KV99105300) with
air bag module attached, in a vise.
3. Connect deployment tool (SST: KV99106400) to air bag mod-
ule connector.
SBF266H
SRS232-B
SRS233-B
SRS234-B
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-
tensioner (Cont'd)
RS-18

4. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
5. The lamp on the right side of the tool, marked ``deployment tool
power'', should glow green, not red.
6. Press the button on the deployment tool. The left side lamp on
the tool, marked ``air bag connector voltage'', will illuminate and
the air bag module will deploy.
CAUTION:
When deploying the air bag module, stand at least 5 m (16 ft)
away from the air bag module.
Deployment of passenger air bag module (outside of
vehicle)
1. Make an 8.5 mm (0.335 in) diameter hole in air bag module
bracket (SST: KV99105300) at the position shown in ®gure at
left.
2. Firmly secure air bag module bracket (SST: KV99105300) in a
vise.
3. Match the two holes in air bag module bracket (held in vise) and
passenger air bag module and ®x them with two bolts [M8 x 25
- 30 mm (0.98 - 1.18 in)].
CAUTION:
If a gap exists between passenger air bag module and air bag
module bracket, use a piece of wood inserted in the gap to
stabilize the air bag module.
4. Connect deployment tool adapter (SST: KV99108300) to
deployment tool (SST: KV99106400) connector and connector
on either side of air bag module.
5. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
6. The lamp on the right side of the tool, marked ``deployment tool
power'', should glow green, not red.
7. Press the button on the deployment tool. The left side lamp on
the tool, marked ``air bag connector voltage'', will illuminate and
the air bag module will deploy.
SRS235-B
SRS236-B
SRS310
SRS311
SRS313-A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-
tensioner (Cont'd)
RS-19

CAUTION:
+When deploying the air bag module, do not stand on the
deploying side.
+Stand at least 5 m (16 ft) away from the air bag module.
Deployment of seat belt pre-tensioner (outside of
vehicle)
1. Firmly anchor seat belt pre-tensioner in a vise.
CAUTION:
Ensure bracket and webbing are placed in the vise.
2. Connect deployment tool adapter (SST: KV999R0020) to
deployment tool (SST: KV99106400) connector and seat belt
pre-tensioner connector.
3. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
4. The lamp on the right side of the tool, marked ``deployment tool
power'', should glow green, not red.
5. Press the button on the deployment tool. The left side lamp on
the tool, marked ``seat belt pre-tensioner connector voltage'',
will illuminate and the seat belt pre-tensioner will deploy.
CAUTION:
When deploying the seat belt pre-tensioner, stand at least 5 m
(16 ft) away from the seat belt pre-tensioner.
SRS020-A
SRS240
SRS241-D
SRS242-B
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-
tensioner (Cont'd)
RS-20