ACURA NSX 1997 Service Repair Manual

Supplemental Restrain t Syste m (SRS )
Short Connector Installation
• I f yo u eve r remov e th e under-das h fus e bo x o r th e
SR S mai n harness , disconnec t th e SR S connecto r
at th e fus e box :
CAUTION : Avoi d breakin g th e connector ; it' s
double-locked .
First lif t th e connecto r li d wit h a thi n screwdriver , the n
pres s th e connecto r ta b dow n an d pul l th e connecto r
out.
TA B
LID
SR S FUS E
To reinstal l th e connector , pus h i t int o positio n unti l i t
clicks , the n clos e it s lid .
SRS MAI NHARNES S
UNDER
-
DAS H
FUS E BO X
ProCarManuals.com

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
ProCarManuals.com

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 .
ProCarManuals.com

Supplemental Restrain t Syste m (SRS )
Test Harnes s an d Attachmen t Point s
SRS UNI TSRS UNI T
SOCKE TPLUG
TES T HARNES S A07MA Z - SL00500
TES T HARNES S B07MA Z - SP0050 0
ROW (SR S UNI T END )
CABL E REE L6P CONNECTO R SEA
T BEL T
TENSIONE R3P CONNECTO R
ROW (WIR E HARNES S END )
SR S TES T
HARNES S C
07LA Z - SL4030 0
SEAT BEL TTENSIONE RASSEMBLY
FLOO R WIR E HARNES S
PASSENGER' SAIRBAG 3 P CONNECTO R
SRS MAI NHARNES S
DASH SENSO R
TES T HARNES S D
07LA 2 - SL4040 0
SRS MAI NHARNES S
DRIVER'S AIRBA G
3 P CONNECTO R
TES T HARNES S C
07LA Z - SL4030 0
DRIVER' SAIRBAGASSEMBL Y
ProCarManuals.com

Supplemental Restrain t Syste m (SRS )
Airbag Assembl y Remova l
Store a remove d airba g assembl y wit h th e
pa d surfac e up ; i f th e airba g i s 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 .
CAUTION :
• Do not install used SRS parts from another car.
Whe n repairing , us e onl y ne w SR S parts .
• Carefull y inspec t th e airba g assembl y befor e yo u in -
stal l it . D o no t instal l a n airba g assembl y tha t show s
sign s o f bein g droppe d o r improperl y handled , suc h
a s dents , crack s o r deformation .
•
Do not disassemble or tamper with the airbag
assembly .
1. Befor e disconnectin g an y part s o f th e SR S wir e
harness , instal l th e shor t connector s (RED ) (se e pag e
24-10 ).
Driver' s Airbag :
2 . Remov e th e tw o Tor x bolt s usin g a Tor x T3 0 bit ,
the n remov e th e driver' s airba g assembly .
ACCESSPANEL
TORX BOL T
Us e a Tor x T3 0 bi t
Passenger' s Airbag :
3 . Remov e th e glov e box , the n remov e th e fou r moun -
ting nut s fro m th e bracket .
4. Remov e th e bracke t an d mountin g nu t fro m th e
passenger' s airba g assembly .
5. Carefull y lif t th e passenger' s airba g assembl y ou t
of th e dashboard .
PASSENGER' S
AIRBA G ASSEMBL Y
BRACKETMOUNTIN GNUTS
AIRBA G ASSEMBL YMOUNTING NUT S
ProCarManuals.com

Airbag Assembly Installation

CAUTION:

• Be sure to install the SRS wiring so that it is not pin-

ched or interfering with other car parts.

• Be sure the battery cables are disconnected.

• After completing repair work, be sure to remove the

short connectors (RED) and reconnect all the con-

nectors.

Driver's Airbag:

1. Place the driver's airbag assembly in the steering

wheel, and secure it with new Torx bolts.

TORX BOLT

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft) Replace.

Use a Torx T30 bit

TORX BOLT

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Replace.

Use a Torx T30 bit
DRIVER'S

AIRBAG ASSEMBLY
Passenger's Airbag:

2. Place the passenger's airbag assembly in the

dashboard.

3. Press the airbag assembly downwards, and turn the

adjusting nut until it touches the lower part of the

airbag assembly. Then, turn it back half a turn so

that there is a small gap between adjusting nut and

the airbag assembly.

4. Install the bracket and mounting nuts.

5. Tighten the three airbag mounting nuts, then

tighten the two mounting nuts on the bracket.

PASSENGER'S

AIRBAG

ASSEMBLY

ADJUSTING

NUT

BRACKET
ADJUSTING

NUT

PASSENGER'S

AIRBAG

ASSEMBLY

AIRBAG ASSEMBLY

MOUNTING NUTS

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Replace.
BRACKET

MOUNTING

NUTS

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

Replace.ProCarManuals.com

Supplemental Restrain t Syste m (SRS )
Airbag Assembl y Installatio n
6. Remov e th e shor t connector s fro m th e passenger' s
airba g connecto r an d fro m th e SR S mai n harnes s
connector .
7 . Reconnec t th e passenger' s airba g 3 P connecto r t o
th e SR S mai n harnes s connector .
8 . Reinstal l th e glov e box .
PASSENGER' SAIRBAGASSEMBL Y
SHORTCONNECTO R(RED)
SRS MAI N HARNES SPASSENGER' SAIRBAG 3 PCONNECTO R
9. Remov e th e shor t connector s fro m th e driver' s air -
ba g connecto r an d fro m th e cabl e ree l 3 P connector .
10 . Reconnec t th e driver' s airba g 3 P connecto r t o th e
cabl e ree l 3 P connector . Attac h th e shor t connec -
to r t o th e acces s panel , the n reinstal l th e pane l o n
th e steerin g wheel .
DRIVER' SAIRBAGASSEMBL Y
CABLE REE L 3 PCONNECTO R
11. Remov e th e shor t connector s fro m th e sea t bel t
tensioners , the n attac h the m to thei r holders .
12 . Reconnec t th e floo r wir e harnes s 3 P connecto r t o
th e sea t bel t tensioner .
SEAT BEL TTENSIONE R3P CONNECTO R
SHORTCONNECTO R(RED)
DRIVER' SAIRBAG 3 PCONNECTO R
SHORT CONNECTO R(RED)ACCES S PANE L
CONNECTO RHOLDER
SEAT BEL TTENSIONE RASSEMBLY
FLOOR WIR E HARNES S3P CONNECTO R
13. Reinstal l th e rea r sid e tri m pane l (se e sectio n 20 ).
14. Reconnec t th e batter y positiv e cable , the n th e
negativ e cable .
15 . Afte r installin g th e airba g assembly , confir m prope r
syste m operation :
Tur n th e ignitio n switc h O N (II) ; th e instrumen t
pane l 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 .
Confir m operatio n o f hor n buttons .
Confir m operatio n of cruis e contro l set/resum e
switch .
ProCarManuals.com

Airbag/Seat Bel t Tensione r Disposa l
Before scrappin g an y airbag s o r sea t bel t tensioner s
(includin g thos e i n a whol e ca r t o b e scrapped) , th e
airbag s mus t b e deploye d an d th e sea t bel t tensioner s
mus t b e triggered . I f th e ca r i s stil l withi n th e warrant y
period , befor e deployin g th e airbag(s ) o r triggerin g th e
sea t bel t tensioners , th e Acur a Distric t Technica l
Manage r mus t giv e approva l and/o r specia l instruction .
Onl y afte r th e airbag s ar e alread y deploye d o r th e sea t
bel t tensioner s ar e triggere d (a s th e resul t o f vehicl e col -
lision , fo r example) , ca n th e norma l scrappin g proce -
dur e b e done .
I f th e airbag s o r th e sea t bel t tensioner s appea r intac t
(no t deploye d o r triggered) , trea t the m wit h extrem e
caution.
Follow th e procedure , describe d below .
Deployin g th e Airbag(s) : In-vehicl e
NOTE: I f a n SR S vehicl e i s t o b e entirel y scrapped ,
it s airbag s shoul d b e deploye d whil e stil l i n th e
vehicle . Th e airbag s shoul d no t b e considere d a s
salvageabl e part s an d shoul d neve r b e installe d i n
anothe r vehicle .
Confir m tha t eac h airba g assembl y i s
securel y mounted ; otherwise , sever e persona l in -
jur y coul d resul t fro m deployment .
1 . Disconnec t bot h th e negativ e cabl e an d positiv e
cable fro m th e battery .
2. Confir m tha t th e specia l too l i s functionin g properl y
by followin g th e chec k procedur e o n th e labe l o f
the too l o r o n pag e 24-41 .
Driver' s Airbag :
3 . Remov e th e acces s panel , the n disconnec t th e 3 P
connecto r betwee n th e airba g an d th e cabl e reel .
DRIVER' S AIRBA GASSEMBL Y
CABLE REE L 3 P
CONNECTO R
DRIVER'SAIRBAG 3 P
CONNECTO R
ACCES S PANE L SHOR
T CONNECTO R
(RED)
Passenger' s Airbag :
4 . Remov e th e glov e box , the n disconnec t th e con -
necto r betwee n th e passenger' s airba g an d SR S
mai n harness .
PASSENGER' S AIRBA GASSEMBL Y
PASSENGER' SAIRBAG3P CONNECTO R
5. Cu t of f th e driver' s airba g connector , the n stri p th e
wir e end s an d connec t th e specia l too l alligato r
clips t o them . Plac e th e specia l too l approximatel y
thirty fee t awa y fro m th e airbag .
DRIVER' S AIRBA GASSEMBL YPASSENGER' S AIRBA GASSEMBL Y
ALLIGATO RCLIPS(YELLOW )
ALLIGATO RCLIPS(YELLOW )
OPERATIO NSWITCH
DEPLOYMEN T
TOO L 1 2 VOL T BATTER Y
07HAZ - SG0040 0
SRS MAI NHARNES S
ProCarManuals.com

Supplemental Restrain t Syste m (SRS )
Airbag/Sea t Bel t Tensione r Disposa l
6. Connec t a 1 2 vol t batter y t o th e tool :
• I f th e gree n ligh t o n th e too l come s on , th e airba g
ignite r circui t i s defectiv e an d canno t b e
deployed . G o t o Damage d Airba g Specia l
Procedure .
• I f th e re d ligh t o n th e too l come s on , th e airba g i s
read y t o b e deployed .
7 . Pus h th e tool' s deploymen t switch . Th e airba g
shoul d deplo y (deploymen t i s bot h highl y audibl e
an d visibl e — a lou d nois e an d rapi d inflatio n o f th e
bag , followe d b y slo w deflation) .
• I f deploymen t happen s an d th e gree n ligh t o n
the too l come s on , continu e wit h thi s procedure .
• I f th e airba g doesn' t deploy , ye t th e gree n ligh t
come s on , it s ignite r i s defective . G o t o Damage d
Airba g Specia l Procedure .
Durin g deployment , th e airba g
assembl y ca n becom e ho t enoug h t o bur n you .
Wai t thirt y minute s afte r deploymen t befor e
touchin g th e assembly .
8 . Dispos e o f th e complet e airba g assembly . N o par t
of it ca n b e reused . Plac e i t i n a sturd y plasti c ba g
an d sea l i t securely .
CAUTION :
• Wea r a fac e shiel d an d glove s whe n handin g a
deploye d airbag .
• Was h you r hand s an d rins e the m wel l wit h
wate r afte r handlin g a deploye d airbag .
AIRBAGASSEMBL Y
STURDYPLASTI CBAG
9. Repea t step s 5 thru 8 fo r a passenge r sid e airbag .
Triggerin g th e Sea t Bel t Tensioners :
NOTE: I f a n SR S ca r containin g on e o r bot h intac t
seat bel t tensioner(s ) i s t o b e entirel y scrapped , th e
sea t bel t tensioner(s ) shoul d b e triggere d whil e stil l
in th e vehicle .
A tensione r i s no t a salvageabl e par t an d shoul d
never b e installe d i n anothe r vehicle .
1. Disconnec t bot h th e negativ e cabl e an d positiv e
cable fro m th e battery .
2. Confir m tha t th e specia l too l i s functionin g properl y
by followin g th e chec k procedur e o n th e labe l o f
the tool , o r o n pag e 24-41 .
3. Remov e th e rea r sid e tri m pane l (se e sectio n 20 ).
4 . Cu t of f th e sea t bel t tensione r connector , the n stri p
th e wir e end s an d connec t th e specia l too l alligato r
clip s t o the m a s shown . Plac e th e specia l too l
approximatel y thirt y fee t awa y fro m th e vehicle .
5. Buckl e th e sea t belt , the n pul l ou t abou t tw o inche s
of slack , mak e a loo p wit h it , an d hol d th e loo p in
plac e wit h a cli p a s shown .
TWO INCHE S
O F SLAC K
SEAT BEL TTENSIONE R
3 P CONNECTO R
SEAT BEL TTENSIONE R
ALLIGATOR CLIP S
CLIP
ProCarManuals.com

6. Connec t a 1 2 vol t batter y t o th e tool :
• I f th e gree n ligh t o n th e too l come s on , th e ten -
sione r ignite r circui t i s defective . G o t o Damage d
Airba g o r Tensione r Specia l Procedure .
• I f th e re d ligh t o n th e too l come s on , th e tension -
e r i s read y t o trigger .
7 . Pus h th e tool' s deploymen t switc h t o trigge r th e
tensione r igniter . Th e tensione r shoul d tak e u p th e
slac k i n th e bel t (po p th e cli p off) , an d loc k th e bel t
i n it s retracte d position .
• I f th e tensione r work s an d th e gree n ligh t o n th e
too l come s on , continu e wit h thi s procedure .
• I f th e tensione r doesn' t work , ye t th e gree n ligh t
come s on , it s ignite r i s defective . G o t o Damage d
Airba g o r Tensione r Specia l Procedure .
Durin g activation , th e tensione r ca n
becom e ho t enoug h to bur n you . Wai t thirt y minute s
afte r activatio n befor e touchin g it .
8 . Dispos e o f th e complet e tensione r assembly . N o
par t o f i t ca n b e reused .
9 . Repea t step s 3 thr u 8 on th e othe r sid e i f tha t
tensione r ha s no t bee n triggered .Simultaneousl y Deployin g Airbag(s ) an d Trig -
gerin g Sea t Bel t Tensioners :
1. Disconnec t bot h th e negativ e cabl e an d positiv e
cabl e fro m th e battery .
2 . Confir m tha t th e specia l too l i s functionin g properl y
b y followin g th e chec k procedur e o n th e labe l o f
th e tool , o r o n pag e 24-41 .
3 . Disconnec t th e SR S mai n harnes s 18 P connecto r
from th e SR S unit .
Cut an d twis ttogethe r fou r wire sCut an d twis ttogethe r fou r wire s
SRS UNI T
4. Cu t th e eigh t wire s a t th e SR S mai n harnes s 18 P
connecto r fou r o n eac h sid e a s shown . Stri p th e
en d o f th e wires , the n twis t the m togethe r t o mak e
eac h se t o f fou r wire s int o one .
5 . Connec t th e alligato r clip s o f th e deploymen t too l
t o th e end s o f th e twiste d wires .
ProCarManuals.com