
Supplemental Restrain t Syste m (SRS )
Descriptio n
SRS Airba g Syste m
Th e SR S is a safet y devic e which , whe n use d i n conjunctio n wit h th e sea t belts , i s designe d t o protec t th e drive r an d pas -
senge r i n a fronta l impac t exceedin g a certai n se t limit .
Th e syste m is compose d o f lef t an d righ t das h sensors , th e SR S uni t (include s safin g sensor) , th e cabl e reel , driver' s
airbag , an d th e passenger' s airbag .
Sea t Bel t Tensioner s
Th e sea t bel t tensioner s ar e linke d wit h th e SR S airbag s t o furthe r increas e th e effectivenes s o f th e sea t belts . I n a front -
en d collision , th e tensioner s instantl y retrac t th e belt s firml y t o secur e th e occupant s i n thei r seats .
PASSENGER' S
AIRBA G
RIGH T DAS H SENSO R
SRS UNI T
PASSENGER' S SEA T BEL T
TENSIONE R
LEF T DAS H SENSO R
CABL E REE L DRIVER'
S
AIRBA G DRIVER'
S SEA T BEL T
TENSIONE R
Operation
A s show n i n th e diagra m below , th e lef t an d righ t das h sensor s ar e connecte d i n parallel . Th e paralle l se t o f sensor s i s
connecte d i n serie s t o eac h airba g inflato r circui t an d th e vehicl e battery . I n addition , a back-u p powe r circui t i s connecte d
i n paralle l wit h th e vehicl e battery . Th e back-u p powe r circui t an d th e safin g senso r ar e locate d insid e th e SR S unit .
Fo r th e SR S t o operate :
(1 ) On e o r bot h safin g senso r an d on e o r bot h das h sensor s mus t activate .
(2 ) Electrica l energ y mus t b e supplie d t o th e airba g inflato r b y th e battery , o r th e back-u p powe r circui t i f th e batter y
voltag e i s to o low .
(3 ) Airba g an d sea t bel t tensione r charge s mus t b e released . The n th e airbag s wil l deplo y an d th e tensioner s wil l
activate .
Self-diagnosi s syste m
A self-diagnosi s circui t i s buil t int o th e SR S unit ; whe n th e ignitio n switc h is turne d O N (II) , th e SR S indicato r ligh t come s o n
an d goe s of f afte r abou t si x second s i f th e syste m is operatin g normally . I f th e ligh t doe s no t com e on , o r doe s no t g o of f
afte r si x seconds , o r i f i t come s o n whil e driving , i t indicate s a n abnormalit y i n th e system . Th e syste m mus t b e inspecte d
an d repaire d a s soo n a s possible .
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Supplemental Restrain t Syste m (SRS )
Genera l Precaution s
Carefully inspec t an y SR S par t befor e yo u instal l it .
D o no t instal l an y par t tha t show s sing s of bein g
droppe d o r improperl y handled , suc h a s dents ,
crack s o r deformation :
— Airba g assembl y (driver' s an d passenger's) .
— Das h sensors .
— Cabl e reel .
— SR S unit .
— Sea t bel t tensione r (driver' s an d passenger's) .
Us e onl y a digita l multimete r t o chec k th e system . I f
it' s no t a Hond a multimeter , mak e sur e it s outpu t i s
1 0 m A (0.0 1 A ) o r les s whe n switche d t o th e smalles t
valu e i n th e ohmmete r range . A teste r wit h a highe r
outpu t coul d damag e th e airba g circui t o r caus e ac -
cidenta l deploymen t an d possibl e injury .
D o no t instal l use d SR S part s fro m anothe r car .
Whe n makin g SR S repairs , us e onl y ne w parts .
Excep t whe n performin g electrica l inspections , alway s
disconnec t bot h th e negativ e cabl e an d positiv e ca -
bl e a t th e batter y befor e beginnin g work .
Replacemen t o f th e combinatio n ligh t an d
wiper/washe r switche s an d cruis e contro l switc h
ca n b e don e withou t removin g th e steerin g wheel :
(se e sectio n 23 ) D
o no t tr y t o disassembl e th e airba g assembly . I f ha s n o
serviceabl e parts . Onc e a n airba g ha s bee n operate d
(deployed) , i t canno t b e repaire d o r reused .
Fo r temporar y storag e of the airba g assembl y durin g
service , pleas e observ e th e followin g precautions :
• Stor e th e remove d airba g assembl y wit h th e pa d sur -
fac e up .
If th e airba g is improperl y store d fac e
down , accidenta l deploymen t coul d prope l th e uni t
wit h enoug h forc e t o caus e seriou s injury .
SHORT CONNECTO R(RED)
Store th e remove d airba g assembl y o n a secur e fla t
surfac e awa y fro m an y hig h hea t sourc e (exceedin g
212°F/100°C ) an d fre e of an y oil , grease , detergen t
o r water .
CAUTION : Imprope r handlin g o r storag e ca n inter -
nall y damag e th e airba g assembly , makin g i t
inoperative .
If yo u suspec t th e airba g assembl y ha s bee n
damaged , instal l a ne w uni t an d refe r t o th e Deploy -
ment/Disposa l Procedure s fo r scrappin g o f th e
damage d airbag .
Airbag Handlin g an d Storag e
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Sensor Inspection
CAUTION: Take extra care when painting or doing
body work on any part of the dashboard lower panel.
Avoid direct exposure of the sensors or wiring to heat
guns, welding, or spraying equipment.
• Disconnect both the negative and positive battery
cables.
• Install the short connectors before working around
the dashboard lower panel or the SRS sensors.
• After any degree of frontal body damage, inspect
both dash sensors. Replace a sensor if it is dented,
cracked, or deformed.
• Be sure the sensors are installed securely.
BRACKET
DASHBOARD
LOWER PANEL
MOUNTING
BOLTS
Wiring Precautions
Never attempt to modify, splice or repair SRS wiring.
NOTE: SRS wiring can be identified by special
yellow outer protective covering.
• Be sure to install the harness wires so that they are
not pinched or interfering with other car parts.
• Make sure all SRS ground locations are clean and
grounds are securely fastened for optimum metal-
to-metal contact. Poor grounding can cause inter-
mittent problems that are difficult to diagnose.
DASH
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Supplemental Restrain t Syste m (SRS )
After a collisio n i n whic h th e airbag s wer e deployed , in -
spec t th e following :
1 . Inspec t th e das h sensor s fo r physica l damage . I f
th e sensor s ar e damaged , replac e them .
2 . Inspec t al l th e SR S wir e harnesses . Replace , don' t
repair , an y damage d harnesses .
3 . Inspec t th e cabl e ree l fo r hea t damage . I f ther e i s
an y damage , replac e th e cabl e reel .
4 . Remov e th e passenger' s lowe r dashboar d panel ,
th e glov e bo x lid , an d th e glov e box . Remov e th e
passenger' s airba g assembly , th e mountin g
bracket , an d fram e fro m th e dashboard . Remov e
th e suppor t bracke t fro m th e steerin g colum n
beam .
5 . Chec k fo r crack s aroun d th e passenger' s airba g
and glov e bo x openings . Us e a brigh t ligh t t o chec k
from below , an d a mirro r t o chec k fro m above . I f
an y crack s ar e found , replac e th e dashboard .
6 . Afte r th e ca r i s completel y repaired , tur n th e igni -
tion switc h on . I f th e SR S indicato r ligh t come s o n
fo r abou t si x second s an d the n goe s off , th e SR S
syste m is OK . I f th e indicato r ligh t doe s no t func -
tion properly , g o to SR S Troubleshooting .
Check fo r crack s
Inspectio n Afte r Deploymen t
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Troubleshooting
Self-diagnosis Functio n
The SR S uni t include s a self-diagnosi s function . I f ther e
i s a failur e in th e sensors , SR S unit , inflator , o r thei r cir -
cuits , th e SR S indicato r ligh t i n th e gaug e assembl y
goe s ON .
SRS INDICATO R LIGH T
As a syste m check , th e SR S indicato r ligh t als o come s
o n whe n th e ignitio n i s firs t turne d t o th e I I position . I f
th e ligh t goe s of f afte r approximatel y si x seconds , th e
syste m is OK .
I f th e SR S indicato r ligh t remain s o n (o r fail s t o com e o n
th e syste m chec k mode ) on e o f th e SR S component s
(o r th e wiring/connector s in-between ) i s faulty .
Troubleshootin g Precaution s
Always us e th e tes t harness . D o no t us e tes t
probe s directl y o n componen t connecto r ter -
minal s o r wires ; yo u ma y damag e the m o r th e
contro l unit .
Whe n connectin g an y o f th e tes t harnesse s t o
th e system , pus h th e connector s straight-in ; d o
no t ben d th e connecto r terminals .
Befor e disconnectin g th e airba g connector(s) ,
tur n of f th e ignitio n switc h an d wai t fo r a t leas t
thre e minute s t o le t th e capacito r i n th e back-u p
circui t discharge . Thi s wil l preven t a malfunctio n
o f th e sea t bel t tensioners .
Befor e disconnectin g an y par t o f th e SR S wir e
harness , instal l th e shor t connecto r (RED ) o n th e
airbag s an d bot h sea t bel t tensioners . Afte r in -
stallin g th e shor t connector s o n th e airbags ,
immediatel y instal l on e SR S Servic e Connecto r
(Too l Numbe r 07MAZ-SP0020A ) o n th e cabl e
ree l connecto r (fo r th e driver' s airbag) , an d
anothe r o n th e SR S mai n harnes s connecto r (fo r
th e passenger' s airbag) . Thi s wil l preven t an y
stati c electricit y fro m triggerin g th e sea t bel t
tensioner s befor e yo u disconnec t the m (se e pag e
24-10 ).
SR S Indicato r Ligh t Troubleshootin g
Possible conditions :
1. SR S indicato r ligh t doe s no t com e o n a t al l — se e
pag e 24-15 .
2 . SR S indicato r ligh t stay s o n constantl y — se e pag e
24-18 .
3 . SR S indicato r ligh t come s o n in combinatio n wit h a
failur e o f anothe r electrica l syste m (brak e syste m
light , malfunctio n indicato r lam p etc.) . Chec k fo r
damage/corrosio n a t th e under-das h fus e box .
NOTE :
Before startin g th e applicabl e troubleshooting ,
chec k th e conditio n o f al l SR S connector s an d
groun d points .
I f th e faul t i s no t foun d afte r completin g th e ap -
plicabl e troubleshooting , substitut e a known -
goo d SR S uni t an d chec k whethe r th e SR S in -
dicato r ligh t goe s off . I f i t does , th e origina l SR S
uni t mus t b e faulty ; replac e it .
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Dash Senso r Remova l
CAUTION :
D o no t damag e th e senso r wiring .
D o no t instal l use d SR S part s fro m anothe r car ,
Whe n repairin g a n SRS , us e onl y ne w parts .
Carefull y inspec t th e das h sensor s fo r sign s o f bein g
droppe d o r improperl y handled , suc h a s dents ,
crack s o r deformation .
1 . Disconnec t th e batter y negativ e cable , the n th e
positiv e cable .
2 . Befor e disconnectin g an y par t o f th e SR S wir e
harness , instal l th e shor t connector s (RED ) (se e pag e
24-10 ).
3 . Remov e th e dashboar d lowe r cover .
4. Pul l bac k th e carpeting , an d disconnec t th e 2 P con -
necto r betwee n th e das h senso r an d SR S mai n
harness .
DASH SENSO R (L )
SR S MAI N HARNES S2P CONNECTO R
5. Remov e th e tw o das h senso r mountin g bolt s fro m
th e senso r bracket , the n remov e th e das h sensor .
SENSOR BRACKE T
DASH SENSO RMOUNTIN G BOLT S
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Supplemental Restrain t Syste m (SRS )
Dash Senso r Installatio n
CAUTION:
B e sur e t o instal l the harnes s wire s s o tha t the y ar e
no t pinche d o r interferin g wit h othe r ca r parts .
Replac e a senso r i f i t i s dented , cracke d o r deformed .
Fo r th e SR S t o functio n properly , th e righ t an d lef t
sensor s mus t b e installe d o n th e prope r sides .
1 . B e sur e th e batter y cable s ar e disconnected .
2 . Instal l th e senso r securely .
SENSOR BRACKE T
DAS H SENSO R
MOUNTIN G BOLT S8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )Replace .
3. Remov e th e shor t connector s (RED ) fro m th e pas -
senger' s airbag , an d remov e th e SR S Servic e
Connecto r fro m th e SR S mai n harness .
4 . Reconnec t th e passenger' s airba g 3 P connecto r t o
th e SR S mai n harnes s 3 P connector , the n reinstal l
th e glov e box .
5 . Remov e th e shor t connecto r (RED ) fro m th e driver' s
airbag , an d remov e th e SR S Servic e Connecto r
fro m th e cabl e reel . 6
. Reconnec t th e driver' s airba g 3 P connecto r t o th e
cabl e ree l connector . Attac h th e shor t connecto r
(RED ) t o th e acces s panel , the n reinstal l th e pane l
o n th e steerin g wheel .
7 . Remov e th e shor t connector s (RED ) fro m bot h sea t
bel t tensioners , the n attac h th e shor t connector s
(RED ) t o their holders .
8 . Reconnec t th e floo r wir e harnes s connector s t o th e
driver' s an d passenger' s sea t bel t tensioners .
9 . Reconnec t th e batter y positiv e cable , the n th e
negativ e cable .
10 . Afte r installin g th e das h sensor , confir m prope r sys -
te m operation :
Tur n th e ignitio n switc h O N (II) ; th e SR S indicato r
ligh t shoul d com e o n fo r abou t si x second s an d
the n g o off .
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