airbag off ACURA NSX 1997 Service Repair Manual

Side Marker/Turn Signal/Hazard Flasher System

Description

To cope with dimensional requirements for the airbag components and to offer better operational feel, the turn signal

lever and the cancel mechanism are separated mechanically, and connected electrically instead.

The system cancels the turn signals electrically, by means of a solenoid, after a turn is made. A sensor mechanism which

consists of cancel cams on the steering shaft and a pair of switches, is used to monitor the steering shaft's position.

STEERING SHAFT

CANCEL CAM

CANCEL SWITCH

TURN SIGNAL LEVER

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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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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 .
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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 .
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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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Supplemental Restraint System (SRS)

SRS Unit Assembly Installation

CAUTION: Be sure to install the SRS wiring so that it is

not pinched or interfering with other car parts.

1. Install the SRS unit.

TORX BOLTS 6 mm

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

Replace.

Use a Torx T30 bit

TORX BOLTS 6 mm

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

Replace.

Use a Torx T30 bit

2. Clip the SRS main harness into the harness holder,

then connect the SRS main harness 18P connec-

tor to the SRS unit; push it into position until it

clicks.

3. Install the carpet.
4. Remove the short connectors (RED) from the pas-

senger's airbag, and remove the SRS Service

Connector from the SRS main harness.

5. Reconnect the passenger's airbag 3P connector to

the SRS main harness 3P connector, then reinstall

the glove box.

6. Remove the short connector (RED) from the driver's

airbag, and remove the SRS Service Connector

from the cable reel.

7. Reconnect the driver's airbag 3P connector to the

cable reel 3P connector. Attach the short connec-

tor (RED) to the access panel, then reinstall the

panel on the steering wheel.

8. Remove the short connectors (RED) from both seat

belt tensioners, then attach the short connectors

(RED) to their holders.

9. Reconnect the floor wire harness 3P connectors to

the driver's and passenger's belt tensioners.

10. Reconnect the battery positive cable, then the

negative cable.

11. After installing the SRS unit, confirm proper system

operation:

Turn the ignition switch ON (II); the SRS indicator

light should come on for about six seconds and

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Supplemental Restrain t Syste m (SRS )
Seat Bel t Tensione r Installatio n
CAUTION:
B e sur e t o instal l th e harnes s wire s s o tha t the y ar e
no t pinche d o r interferin g wit h othe r parts .
Be sur e th e batter y cable s ar e disconnected .
1. Instal l th e sea t bel t tensioner .
SEAT BEL TTENSIONE R
SHOULDERHARNESSANCHOR BOL T
3 1 N- m (3. 2 kgf-m ,
23 Ibf-ft )
MOUNTIN G BOL T9.8 N- m (1. 0 kgf-m ,7.2 Ibf-ft )
MOUNTIN G BOL T31 N- m (3. 2 kgf-m , 2 3 Ibf-ft )
2. Reinstal l th e shoulde r harnes s ancho r bolt .
3 . Remov e th e shor t connecto r (RED ) fro m th e tension -
er , the n connec t th e floo r wir e harnes s connecto r
t o th e tensioner .
SEAT BEL TTENSIONE R
FLOOR WIR E HARNES S3P CONNECTO R
4. Reinstal l th e rea r pilla r tri m panel , rea r sid e tri m
panel , uppe r tri m panel , an d rea r tri m panel .
REAR PILLA RTRIM PANE L
UPPERTRIM PANE L
REAR SID E TRI MPANE LREAR TRI MPANE L
5. Remov e th e shor t connecto r (RED ) fro m th e passen -
ger' s airbag , an d remov e th e SR S Servic e
Connecto r fro m th e SR S mai n harness .
6 . 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 .
7 . 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 A
fro m th e cabl e ree l connector .
8 . 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 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 .
9 . Reconnec t th e batter y positiv e cable , the n th e nega -
tiv e cable .
10 . Afte r installin g th e sea t bel t tensioner , confir m
prope r syste m operation .
Tur n th e ignitio n switc h O N (II) ; th e SR S indica -
to 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 th e sea t bel t retractor .
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