steering wheel NISSAN ALMERA N15 1995 Workshop Manual

PRECAUTION
Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System)

The Supplemental RestraintSystem"AirBag", usedalong withaseat belt, helps toreduce therisk or
severity ofinjury tothe driver andfront passenger inafrontal collision. TheSupplemental Restraint
System consists ofair bag modules (locatedinthe center ofthe steering wheelandonthe instrument
panel onthe passenger side),adiagnosis sensorunit,warning lamp,wiring harness andspiral cable.

WARNING:
• Toavoid rendering theSRS inoperative, whichcouldincrease therisk ofpersonal injuryordeath
in the event ofacollision whichwould resultinair bag inflation, allmaintenance mustbeperformed
by an authorized NISSANdealer.
• Improper maintenance, includingincorrectremovalandinstallation ofthe SRS, canlead topersonal
injury caused byunintentional activationofthe system.
• Donot use electrical testequipment onany circuit related tothe SRS unless instructed tointhis
Service Manual. SRSwiring harnesses arecovered withyellow insulation eitherjustbefore the
harness connectors orfor the complete harness,foreasy identification.
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System)

The Supplemental RestraintSystem"AirBag", usedalong withaseat belt, helps toreduce therisk or
severity ofinjury tothe driver inafrontal collision. TheSupplemental RestraintSystemconsists ofan
air bag module (located inthe center ofthe steering wheel),adiagnosis sensorunit,warning lamp,
wiring harness andspiral cable.

WARNING:
• Toavoid rendering theSRS inoperative, whichcouldincrease therisk ofpersonal injuryordeath
in the event ofacollision whichwould resultinair bag inflation, allmaintenance mustbeperformed
by an authorized NISSANdealer.
• Improper maintenance, includingincorrectremovalandinstallation ofthe SRS, canlead topersonal
injury caused byunintentional activationofthe system.
• Donot use electrical testequipment onany circuit related tothe SRS unless instructed tointhis
Service Manual.
RS-2

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Precautions forSRS "AirBag" and"Seat Belt
Pre-tensioner" Service

• Donot use acircuit testertocheck SRScircuits.
• Before servicing theSRS. turnignition switch"OFF", disconnect bothbattery cablesandwait forat
least 10minutes.
For approximately 10minutes afterthecables areremoved, itis still possible forthe airbag to
deploy. Therefore, donot work onany SRS connectors orwires untilatleast 10minutes havepassed.
• For single airbag system, donot separate diagnosis sensorunitfrom steering wheel.
• For dual airbag system. diagnosis sensorunitmust always beinstalled withtheir arrow marks
"Q"

pointing towards thefront ofthe vehicle forproper operation. Alsocheck diagnosis sensorunitfor
cracks. deformities orrust before installation andreplace asrequired.
• The spiral cablemustbealigned withtheneutral position sinceitsrotations arelimited. Donot
attempt toturn steering wheelorcolumn afterremoval ofsteering gear.
• Handle airbag module carefully. Alwaysplaceitwith thepad side facing upward.
• Donot use oldbolts afterremoving anySRS parts; replace withnewones. Conduct self-diagnosis
to check entire SRSforproper function.
• For dual airbag system, instrument panelassembly shouldbereplaced afterairbag inflates.

X

X

Use
forspecial bolts
[TAMPER RESISTANT
TORX (SizeT50))

a:
3.5 (0.138)
dia.

b: 8.5 -8.6
(0.335 •0.339) dia.

c: approx.
10

(0.39) sq.

c

NT354
a

HT61961000
and
HT62152000 com-
bined *1 Special torxbit
Special
Service Tools

Application
Tool number
Description Seat
belt DualAir Single
Tool name
pre-ten-BagAirBag
sioner*2 Sstem Sstem
KV991072So Disposingofair bag
Air bag deployment kit module
KV991 06400
X
X

Deployment tool
KV991065So
Deployment tool
adapters
X

For passenger
air bag module
NT353

KV991 05300 Anchorthepassenger
Passenger airbag
airbag module
bracket
X

NT361
Unit:
mm(in)

*1: Special toolorcommercial equivalent
*2: Tools arenotapplicable becauseofits mechanical type.

RS-8

SUPPLEMENTALRESTRAINTSYSTEM(SRS)

Visually checkSRScomponents
Diagnosis sensorunit
Check diagnosis sensorunitand bracket fordents, cracks
or deformities.
Check connectors fordamage, andterminals fordeformi-
ties.
Air bag module andsteering wheel
Remove airbag module fromsteering wheelorinstrument
panel. Check harness coverandconnectors fordamage,
terminals fordeformities, andharness forbinding.
Install driversideairbag module tosteering wheeltocheck
fit or alignment withthewheel.
Check steering wheelforexcessive freeplay.
For dual airbag system, installpassenger sideairbag
module toinstrument paneltocheck fitor alignment withthe
instrument panel.

Maintenance
Items

1. Check "AIRBAG" warning lampoperation
After turning ignition keyto"ON" position, "AIRBAG"
warning lampilluminates. The"AIR BAG" warning lamp
will turn offafter about 7seconds ifno malfunction is
detected. If any ofthe following airbag warning lampconditions
occur, immediately checktheairbag system. RefertoRS-32
and 43for details.
The warning lampdoesnotilluminate whentheignition
switch isturned "ON".
The warning lampdoesnotturn offabout 7seconds after
the ignition switchisturned "ON".
The warning lampturns offabout 7seconds aftertheigni-
tion switch isturned "ON",butitturns onorflashes again.

•
MRS115A
•
•
2. (1)
•
•
(2)
•
•
•
•

(3) Spiral cable
• Check spiralcablefordents, cracks, ordeformities.
• Check connectors andprotective tapefordamage.
• Check steering wheelfornoise, binding orheavy operation. •
(4) Main harness andairbag harness (Fordual airbag system
only)
• Check connectors forpoor connections, damage,andtermi-
nals fordeformities.
• Check harnesses forbinding, chafingorcut.

CAUTION: Replace previously usedscrews withnewones.
RS-11

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Removal andInstallation -Diagnosis Sensor
Unit
CAUTION:
• Before servicing SRS,turntheignition switchoff,disconnect bothbattery cablesandwait foratleast
10 minutes.
• The special boltsarecoated withbonding agentwhiletheother boltisfor ground. Donot use old
bolts afterremoval; replacewithnewones.
• For single airbag system, donot separate diagnosis sensorunitfrom steering wheel.
• For dual airbag system, checkdiagnosis sensorunitforproper installation.
• Check diagnosis sensorunittoensure theyarefree ofdeformities, dents,cracks orrust. Ifthey show
any visible signsofdamage, replacethemwithnewones.
• Check diagnosis sensorunitbrackets toensure theyarefree ofdeformities orrust.
• Always workfromtheside ofair bag module.
• Replace diagnosis sensorunitifithas been dropped orsustained animpact.
SEC. 253~

IT
r
Grou~? bolt~

G ~~ ~
Forward mark
Fr?nt
_--I
d--!
Dia~no:iS senSlrunit

!

Special bOIt~ -

t"'J
15-25 N.m
(1.5 •2.5 kg-m,
11-
18 ft-Ib)
MRS116A REMOVAL
OFDIAGNOSIS SENSORUNIT

1. Disconnect driverandpassenger airbag module connec-
tors. Also, disconnect seatbeltpre-tensioner connector.
2. Remove consolebox.Refer to"INSTRUMENT PANEL"in8T
section.
3. Disconnect diagnosissensorunitconnector.
4. Remove boltandalso remove specialboltsusing the
TAMPER RESISTANT TORX(SizeT50),fromdiagnosis sen-
sor unit.
Then remove thediagnosis sensorunit.

NOTE:
• Toinstall, reverse theremoval procedure sequence.
• After replacement, performself-diagnosis forSRS. Refer to
"Self-diagnosis" fordetails (RS-32andRS-43).
RS-12

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Removal andInstallation -Air Bag Module and
Spiral Cable(DualAirBag System)
SEC. 253-484
Horn relayswitch connector
Special bolt~

to:J
15-25 (1.5 -2.5,
11-
18)

to:J :
N.m (kg-m. ft-Ib) Special
bolt~

to:J
15.25 (1.5•2.5,
11•
18)

Side lidRH
Air bag module

to:J
29-39 (3.0 -4.0, 22-29)

Lower lid
MRS118A
Removal andInstallation -Air Bag Module and
Spiral Cable(Single AirBag System)
SEC. 253-484
Airbag module connector
Spiral cable

A'

Special bolt~ ~

t"J
15•25 (1.5 •2.5, 11•18)- ~

Side lidLH/
"-J

to:J :
N. m (kg-m. ft-Ib) ~DiagnOSiS
sensorunit

(Do notseparate thediagnosis
sensor unitfrom steering wheel.)

Special boll~

to:J
15-25 (1.5 -2.5,
11-
18)

~~ r
S;d, lidRH

~ (]A;,b'9
mod",
MRS119A
RS-14

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Removal -Air Bag Module andSpiral Cable
CAUTION:
• Before servicing SRS,turntheignition switchoff,discon-
nect both battery cablesandwait foratleast 10minutes.
• Always workfromtheside ofair bag module.

1. Remove lowerlidfrom steering wheel,anddisconnect air
bag module connector.

SBF811E
2.Remove sidelids.Using theTAMPER RESISTANT TORX
(Size T50), remove leftand right special bolts.Airbag mod-
ule can then beremoved.

SBF812E CAUTION:
• Always placeairbag module withpadside facing upward.
• Donot attempt todisassemble airbag module.
• The special boltsarecoated withbonding agent.Donot use
old bolts afterremoval; replacewithnew ones.
MRS120A

Air bag
module

SBF814E•
•
• Replace
airbag module ifithas been dropped orsustained
an impact.
Do not expose theairbag module totemperatures exceed-•
•
ing 90°C (194°F).
Do not allow oil,grease orwater tocome incontact withthe
air bag module.
SBF239F
3.
Set steering wheelinthe neutral position.
4. Disconnect hornconnector andremove nuts.
5. Using steering wheelpuller, remove steering wheel.Be
careful nottoover-tighten pullerboltonsteering wheel.

CAUTION:
• Donot tap orbump thesteering wheel.

6. Remove steering columncover.
7. Disconnect connectorsandremove thefour screws. The
spiral cablecanthen beremoved.

CAUTION:
• Donot attempt todisassemble spiralcable.
• Donot apply lubricant tothe spiral cable.
RS-15

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Dual airbag system Installation
-Air Bag Module andSpiral Cable

1. Set thefront wheels inthe straight-ahead position.
2. Make surethatthespiral cableisin the neutral position.
The neutral position isdetected byturning leftabout 2.5
revolutions fromtheright endposition. Alignthetwo marks

(~ ).
CAUTION:
• The spiral cablemaysnap duetosteering operation ifthe
cable isinstalled inan improper position.
Also, withthesteering linkagedisconnected, thecable may
snap byturning thesteering wheelbeyond thelimited num-
ber ofturns. (Thespiral cablecanbeturned upto2.5 turns
from theneutral position toboth theright andleft.)
• Always workfromtheside ofair bag module.

3.
Connect spiralcablecOnnector andtighten withscrews.
Install steering columncover.

Single airbag system
Dual airbag system MRS074AA
SRS037-A
4.Install steering wheelsetting spiralcablepinguides, and
pull spiral cablethrough.
5. Connect hornconnector andengage spiralcablewithpawls
in steering wheel.
6. Tighten nut.

~: 29-39 N'm (3.0-4.0 kg-m, 22-29 ft-Ib)
MRS075AA RS-17
•

7.Position airbag module andtighten withnewspecial bolts.
8. Connect airbag module connector.
9. Install alllids.
10. Conduct self-diagnosis toensure entireSRSoperates prop-
erly. (Use CONSULT orwarning lampcheck.)
Before performing self-diagnosis, connectbothbattery
cables.
11. Turn steering wheeltothe leftend andthen tothe right end
fully tomake surethatspiral cableisset inthe neutral
position.
If air bag warning lampblinks orstays ON(atthe user
mode), itshows thespiral cablemaybesnapped duetoits
improper position.Performself-diagnosis again(useCON-
SUL Tor warning lamp).Ifa malfunction isdetected, replace
the spiral cablewithanew one.

SBF812EA
MRS046AA
SUPPLEMENTAL
RESTRAINTSYSTEM(SRS)
Installation -Air Bag Module andSpiral Cable
(Cont'd)

G\\
--------~
~\)

..~l~~
\\\?\\

Special bolt~~ "'(\\

cc:J
15-25 N.m ~

(1.5 -2.5 kg-m,

11 -18 ft-Ibl

Installation-Front Passenger AirBag Module
(Dual AirBag System)
• Always workfromtheside ofair bag module.

1. Install frontpassenger airbag module onsteering member.
• Ensure harness isnot caught between rearofair bag mod-
ule and steering member.
2. Install glovebox'assembly. (Gloveboxlidisopen.)
3. Connect airbag module connector tobody harness connec-
tor.
4. Close theglove boxlid.

RS-18

COLLISIONDIAGNOSIS -Dual AirBag System

To repair theSRS, perform thefollowing steps.

When SRSisactivated inacollision:

CD
Replace thediagnosis sensorunit.

@ Remove
theairbag modules.

@
Check theSRS components usingthetable shown below:
• Replace anySRS components showing
visible
signsofdamage (dents,cracks, deformation).

@
Conduct self-diagnosis. Referto"Self-diagnosis" fordetails (RS-32). Ensuretheremainder ofthe
SRS isoperating properly.

Install newairbag modules.

@
Conduct self-diagnosis again.

When SRSisnot activated inacollision:

CD
Check theSRS components usingthetable shown below:
• Replace anySRS components showingvisiblesignsofdamage (dents,cracks, deformation).

@
Conduct self-diagnosis usingCONSULT and"'AIR BAG" warning lamp.Referto"Self-diagnosis" for
details (RS-32). EnsureentireSRSoperates properly.

SRS inspection

Part SRSisactivated
SRSisNOT activated
Air bag module REPLACE
1.Remove airbag module. Checkharness coverandconnectors fordamage,
(driver andpassen-
Installwithnew terminalsfordeformities, andharness forbinding.
ger side) bolts.
2-1.Install driverairbag module intothesteering wheeltocheck fitand align-
ment withthewheel.
2-2. Install passenger airbag module intotheinstrument paneltocheck fit
with theinstrument panel.
3. No damage found,reinstall withnewbolts.
4. Ifdamaged-REPLACE. Airbag must bedeployed beforediscarding.
Instrument panel
REPLACE 1.Check instrument panelforbending, deformities, orcracks.
Install withnew
2.Ifno damage isfound, reinstall withnewbolts.
bolts. 3.Ifdamaged-REPLACE.
Diagnosis sensor REPLACE
1.Check caseandbracket fordents, cracks ordeformities.
unit Installwithnew
2.Check connectors fordamage, andterminals fordeformities.
bolts. 3.Ifno damage isfound, reinstall withnewbolts.
4. Ifdamaged-REPLACE.
Steering wheel
1.Visually checksteering wheelfordeformities.
2. Check harness (builtintosteering wheel)andconnectors fordamage, andterminals fordeformi-
ties.
3. Install airbag module tocheck fitor alignment withsteering wheel.
4. Check steering wheelforexcessive freeplay.
5. Ifno damage isfound, reinstall withnewbolts.
6. Ifdamaged-REPLACE.
Spiral cable
1.Visually checklock(engagement) pinsandcombination switchfordamage.
2. Check connectors, flatcable andprotective tapefordamage.
3. Check steering wheelfornoise, binding orheavy operation.
4. Ifno damage isfound, reinstall withnew bolts.
5. Ifdamaged-REPLACE.
Harness andCon-
1.Check connectors forpoor connection, damage,andterminals fordeformities.
nectors 2.Check harness forbinding, chafing,cuts,ordeformities.
3. Ifno damage isfound, reinstall theharness andconnectors.
4. Damaged-REPLACE damagedsectionofharness. Donot attempt torepair, spliceormodify any
SRS harness.

RS-40

TROUBLEDIAGNOSES -Supplemental RestraintSystem(SRS)
Single AirBag System
Self-diagnosis (Cont'd)
REPAIR PROCEDURES
CAUTION:
Before servicing airbag, turntheignition switchoffand disconnect bothbattery cablesandwail forat
least 10minutes.

Warning lampoperation Explanation
Repairorder
Open orshort inthe air
1.Visually checkthewiring harness andconnectors.
Air bag
bagmodule circuit.
2.Replace airbag module.
Warning lampblinks. hasnot
3.Replace steering wheelassembly (including diag-
deployed. Malfunctioning
diagnosis
sensor unit nos
issensor unit).
Warning lampfuseisblown. 1.
Check warning lampfuse.
2. Visually checkthewiring harnesses andconnec-
Open inthe warning lampcircuit
tors.
Warning lampdoes not
Malfunctioning LED 3.
Check warning lampLED.
illuminate atall. 4.Replace steering wheelassembly (including diag-
Malfunctioning combinationmeter nos
issensor unit).
5. Replace airbag harness assembly.
Malfunctioning diagnosissensorunit
6.Replace combination meter.
Air bag hasdeployed: Go
toCOLLISION DIAGNOSIS -Single AirBag
System, pageRS-45.
1. Check airbag fuse.
SRS airbag fuse isblown.

2.
Visually checkthewiring harnesses andconnectors
Warning lampiscontinu-
forcombination meter,diagnosis sensorunitand
ously ON.
Openinair bag harness orspiral
spiralcable.
cable circuit 3.
Replace spiralcable.
4. Replace steeringwheelassembly (including diag-
Malfunctioning diagnosissensorunit nosis
sensor unit).
5. Replace airbag harness assembly.

*;
After airbag isdeployed, warninglampilluminates untiltheignition switchisturned OFF.When theIgnition switchisturned
ON again, Ihewarning lampilluminates forapproximately 7seconds. Itthen blinks ifmalfunction isfound, orgoes outwhen
there isno malfunction.
Follow theprocedures innumerical orderwhenrepairing malfunctioning parts.Confirm whether malfunction iseliminated using
the airbag warning lampeachtimerepair isfinished. Ifmalfunction isstill observed, proceedtothe next step. When malfunc-
tion iseliminated, furtherrepairworkisnot required.
RS-44