1995 NISSAN ALMERA N15 warning

TROUBLEDIAGNOSES -Supplemental RestraintSystem(SRS)-
Single AirBag System
Wiring Diagram -SRS -
SINGLE AIRBAG SYSTEM

RS-SRS-01

IGNITION SWITCH
ON orSTART
AIRBAG
DIAGNOSIS
SENSOR
UNIT
Refer
toEL-POWER.
SPIRAL
CABLE

@:

Withtachometer

@:
Without tachometer

i(f ...
@
30
@
40

*2"'@9'@31
,

*3 ... @16 @30

,

FUSE
BLOCK
(J/B)

~

3A

1211

10A

rn

CHID
m

~BR/W~F.BR/W~

I
GID@!)
I

O-JD- BR/W.3ID)- BR/W-:E-O

Y
B!wt I

Ii*llJ
":3
I
t

COMBINA nON BR/W~ R/W B
METER
m-~~ffl---m

(AIR BAG
WARNING
LAMP)

@)

~

U*.21
B/R

B/R
-!-

~ AIR
BAG
MODULE (SQUIB)
rT

B B
~ ~

~ @D

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I

1

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L
~

r-----------------,

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1 ~I

1~*4 3*5
1

: [g]lJTIJ
W4Y :

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L
~
~

lIL..m
BR
Refer
tolast page
(Foldout page).

HRS003
RS-42

TROUBLEDIAGNOSES -Supplemental RestraintSystem(SRS)-
Single AirBag System
Self-diagnosis
DIAGNOSTIC PROCEDURE 7
(@
without CONSULT)
Checking SRSoperation byusing "AIRBAG" warning lamp-
User mode

1. After turning ignition switchfrom"OFF" to"ON", "AIR
BAG" warning lampoperates.
2. Compare "AIRBAG" warning lampoperation tothe chart
below.

Note: CONSULT cannotbeused fortrouble diagnoses.

"AIR BAG" warning lampoperation -User mode

1. Normal
IGNON
ON
!--

OFF J Approx.I _

I}
sec...
I

2. Abnormal -Ifthe warning lampshows asfollows, checktheSRS immediately.
e Blinking
e Warning lampdoes notilluminate atall.
ON
OFF
ON
OFF o.5~sec.
IGN ON

,----,

I I

I I

I
I

•

ecootiooo::JOO_IG_N_O_N _
OFF MRS106
RS-43

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

COLLISIONDIAGNOSIS -Single AirBag System

To repair theSRS "AIR BAG", perform thefollowing steps:

When SRSisactivated inacollision:

CD
Remove theairbag module.

@
Remove thesteering wheelassembly.

@)
Check thespiral cableusingthetable shown below:
• Ifthe spiral cableshows anyvisible damage suchasdents, cracks, ordeformation, replaceit
with anew one.

@
Install newsteering wheelassembly.

CID
Install newairbag module.

@
Conduct self-diagnosis using"AIRBAG" warning lamptoensure thatentire SRSoperates properly.
Refer toRS-43 fordetails.

When SRSisnot activated inacollision:

CD
Check theSRS components usingthetable shown below:
• Ifthe SRS components showanyvisible damage suchasdents, cracks, ordeformation, replace
them withnewones.

@
Conduct self-diagnosis using"AIRBAG" warning lamptoensure thatentire SRSoperates properly.
Refer toRS-43 fordetails.

SRS inspection

Part SRSisactivated SRSisNOT activated
Air bag module REPLACE 1.Remove airbag module. Checkharness coverandconnectors fordamage,
Install withnew terminalsfordeformities, andharness forbinding.
bolts. 2.Install airbag module intothesteering wheeltocheck fitand alignment
with thewheel.
3. No damage found,reinstall withnewbolts.
4. Ifdamaged-REPLACE. Airbag must bedeployed beforediscarding.
Steering wheel REPLACE 1.Visually checksteering wheelfordeformities.
assembly (includ- 2.Check harness andconnectors fordamage, andterminals fordeformities.
ing diagnosis sen- 3.Check diagnosis sensorunitfordents, cracks ordeformities.
sor unit).
Donot remove diagnosis sensorunitfrom steering wheel.

4. Install airbag module tocheck fitor alignment withsteering wheel.
5. Ifno damage isfound, reinstall thesteering wheelassembly.
6.
If
damaged-REPLACE.
Spiral cable 1.Check spiralcablefordents, cracks ordeformities.
2. Check connectors andprotective tapefordamage.
3. Check
steering wheelfornoise, binding orheavy operation.
4.
If
no damage isfound, reinstall withnewbolts.
5. If
damaged-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-45
•

PRECAUTIONSANDPREPARATION
Precautions
SUPPLEMENTAL RESTRAINTSYSTEM(SRS)"AIRBAG"
(Dual AirBag 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.
Information necessarytoservice thesystem safelyisincluded inthe
RSsection
ofthis Service Manual.

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)"AIRBAG"
(Single AirBag System)

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

RS section
ofthis Service Manual.

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.
STEERINGSYSTEM
• Before disassembly, thoroughlycleantheoutside ofthe unit.
• Disassembly shouldbedone inaclean workarea. Itis important toprevent theinternal partsfrom
becoming contaminated bydirt orother foreign matter.
• Place disassembled partsinorder, onaparts rack,fore"asier andproper assembly.
• Use nylon cloths orpaper towels toclean theparts; common shopragscanleave lintthat might
interfere withtheir operation.
• Before inspection orreassembly, carefullycleanallparts withageneral purpose, non-flammable
solvent.
• Before assembly, applyacoat ofrecommended ATF*tohydraulic parts.Vaseline maybeapplied to
O-rings andseals. Donot use any grease.
• Replace allgaskets, sealsandO-rings. Avoiddamaging O-rings,sealsandgaskets duringinstalla-
tion. Perform functional testswhenever designated.

*:
Automatic transmission fluid
ST-2

ST27091000

.. :Direction ofoil flow Low-pressure
hose SST834-AON-VEHICLE
SERVICE
Checking Hydraulic System

Before starting, checkbelttension, drivingpulleyandtirepres-
sure. 1. Set Tool. Open shut-off valve.Thenbleed air.(See "Bleed-
ing Hydraulic System"ST-7.)
2. Run engine.

Make suretemperature offluid intank rises to60 to80°C (140
to 176°F).
WARNING:
Warm upengine withshut-off valvefullyopened. Ifengine is
started withshut-off valveclosed, fluidpressure inoil pump
increases tomaximum. Thiswillraise oiltemperature abnor-
mally.

3. Check pressure withsteering wheelfullyturned toleft and
right positions withengine idlingat1,000 rpm.

CAUTION:
Do not hold thesteering wheelinalocked position formore
than 15seconds.
Oil pump maximum standardpressure:
7,649 -8,238 kPa(76.5 .82.4 bar,
78 -84 kg/cm
2,
1,109-1,194 psi)

4.
If
oil pressure isbelow thestandard pressure, slowlyclose
shut-off valveandcheck pressure.
• When pressure reachesstandard pressure, gearisdam-
aged.
• When pressure remainsbelowstandard pressure, pumpis
damaged.

CAUTION: Do not close shut-off valveformore than15seconds.

5.
If
oil pressure ishigher thanstandard pressure, checkoil
pump flowcontrol valve.
6. After checking hydraulic system,removeToolandaddfluid
as necessary. Thencompletely bleedairout ofsystem.

S1-8