1995 ACURA TL Service Repair Manual

24-71
24-30
24-2 0
24-1 5
24-20
24-2 2
24-47
24-3 9
Specia l Tool s
SRS INFLATO R
SIMULATO R
07SAZ-TB4011 A
SRS SIMULATO RLEAD C07TAZ-SZ5011 A
NOTE: Th e SR S Servic e Connector , T/ N 07SA Z - SW50200 , an d th e SR S Servic e Connecto r T/ N 07TA Z -
SZ50200 , ar e no t available . Instead , us e th e SR S Inflato r Simulator , T/ N 07SAZ-TB4011A , an d th e SR S Simulato r Lea d
C , T/ N 07TA Z-SZ5011A . Whe n th e SR S Servic e Connector , T/ N 07SA Z - SW50200 , i s calle d for , connec t th e lea d t o
th e Simulator' s "Jumper " jack . Whe n th e SR S Servic e Connecto r T/ N 07TA Z - SZ50200 , i s calle d for , connec t th e
lea d t o on e o f th e simulator' s jacks .
*1
: Include d i n SR S Too l Se t 07MA Z - SM5000 B
*2 : Include d i n SR S Too l Se t 07MA Z - SL0010 A
*3 : Us e wit h th e stackin g patc h cord s fro m T/ N 07SA Z-001000A , Backprob e Set .
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Component/Wiring Location s
Index
SRS INDICATO R LIGH T (I n th e gaug e assembly )
Troubleshooting , pag e 24-1 4 an d 24-3 9
Gaug e assembly , sectio n 2 3
To HOR N SWITC H
DASHBOAR D WIR E HARNES S
t o SR S INDICATO R LIGH T in
GAUG E ASSEMBL Y
5 P CONNECTO R
To DRIVER' S AIRBA G
FRONT PASSENGER' S AIRBA G
Replacement , pag e 24-6 7
Disposal , pag e 24-7 1
T
o CRUIS E CONTRO L
SET/RESUM E SWITC H
MAI N WIR E HARNES S
t o DASHBOAR D
WIR E HARNES S
16 P CONNECTO R
SR S MAI N HARNES S
to MAI NWIRE HARNES S
4 P ('95-9 6 Models) ,
3 P ('97-9 8 Models )
CONNECTO R SR
S MAI N HARNES S
t o FRON T PASSENGER' S
AIRBAG3P ('95-9 6 Models) ,
2 P ('97-9 8 Models )
CONNECTO R
SERVICE CHEC KCONNECTO R (2P )
[ORN , GRN/YEL ]
SR S MAI N HARNES S
SR S MAI N HARNES S
t o UNDER-DAS H
FUSE/RELAY BO X2P CONNECTO R
MEMOR Y ERAS E SIGNA L
(MES ) CONNECTO R (2P )
[GRY , GRY ] or [GRN , GRN ]SRS MAI N HARNES Sto SR S UNI T18P CONNECTO R SR
S UNI T GROUN D
SRS UNI T(Includin g safin g senso r
an d impac t sensor )
Replacement , pag e 24-7 7
CABL E REE LReplacement ,
pag e 24-7 3
DRIVER' S AIRBA G
Replacement ,
page 24-67Disposal , pag e 24-7 1
SR S MAI N HARNES S
to CABL E REE L2P CONNECTO R
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Description
The SR S is a safet y devic e which , whe n use d i n conjunctio n wit h th e sea t belt , i s designe d t o hel p protec t th e drive r an d
fron t passenge r i n a fronta l impac t exceedin g a certai n se t limit . Th e syste m consist s o f th e SR S uni t (includin g safin g sen -
so r an d impac t sensor) , th e cabl e reel , th e driver' s airbag , an d fron t passenger' s airbag .
Operatio n
Th e mai n circui t i n th e SR S uni t sense s an d judge s th e forc e o f impac t and , i f necessary , ignite s th e inflato r charges . I f bat -
ter y voltag e i s to o lo w o r powe r i s disconnecte d du e t o th e impact , th e voltag e regulato r an d th e back-u p powe r circui t
respectivel y wil l kee p voltag e a t a constan t level .
Fo r th e SR S to operate :
(1 ) Th e impac t senso r mus t activate , an d sen d electri c signal s t o th e microprocessor .
(2 ) Th e microprocesso r mus t comput e th e signals , an d mus t sen d signal s t o th e airba g inflators .
(3 ) Th e inflator s mus t ignit e an d deplo y th e airbags .
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 i s 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 if 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 abnormal -
it 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 .
Fo r bette r serviceability , th e memor y wil l stor e th e caus e o f th e malfunction , an d th e dat a lin k circui t passe s o n th e infor -
matio n fro m th e memor y t o th e dat a lin k connecto r (DLC) . Thi s informatio n ca n b e rea d wit h th e Hond a PG M Teste r con -
necte d to th e DL C (16P) .
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Precautions/Procedures
General Precaution s
• Carefull y inspec t an y SR S par t befor e yo u instal l it . D o
not instal l an y par t tha t show s sign s o f bein g droppe d
or improperl y handled , suc h a s dents , crack s o r defor -
mation :
Airbag assemblie s
Cabl e ree l
SRS uni t
• 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 acci -
denta l deploymen t an d possibl e injury .
• D o no t instal l use d SR S part s fro m anothe r vehicle .
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 posi -
tiv e cabl e fro m th e battery , an d wai t a t leas t thre e
minute s befor e beginnin g work .
• Replacemen t of the combinatio n ligh t an d wiper /
washer 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 :
Fo r combinatio n ligh t an d wiper/washe r switc h
replacement , se e sectio n 23 .
Fo r cruis e contro l set/resume/cance l switc h
replacement , se e sectio n 23 .
• Wheneve r th e ignitio n switc h i s O N (II) , o r ha s bee n
turne d OF F fo r les s tha n thre e minutes , b e carefu l no t
t o bum p th e SR S unit ; th e airbag s coul d accidentall y
deplo y an d caus e damag e o r injury .
• Wheneve r th e airba g ha s bee n activated , replac e th e
SR S unit .
• Th e origina l radi o ha s a code d thef t protectio n circuit .
B e sur e to ge t th e customer' s cod e numbe r befor e dis -
connectin g th e batter y cables .
Airbag Handlin g an d Storag e
Do no t tr y t o disassembl e th e airba g assembly . I t 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 o f th e airba g assembl y durin g ser -
vice , 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 . O n '95-9 6 models , mak e sur e yo u connec t th e
shor t connecto r (RED ) t o th e passenger' s airba g con -
nector . Th e driver' s airba g connecto r o n '95-9 6 model s
an d bot h airba g connector s o n a '97-9 8 model s hav e
built-i n shor t contact s (se e pag e 24-11 ).
I f 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 to caus e seriou s injury .
• Stor e 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 o f an y oil , grease , detergen t
o r water .
CAUTION : Imprope r handlin g o r storag e ca n internall y
damag e th e airba g assembly , makin g it inoperative .
I f yo u suspec t th e airba g assembl y ha s bee n damaged ,
instal l a ne w unit , an d refe r t o th e Deployment/Disposa l
Procedure s fo r disposin g o f th e damage d airbag .
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Precautions/Procedures
SRS Uni t Precaution s
• Tak e extr a car e whe n paintin g o r doin g bod y wor k i n
th e are a belo w th e dashboard . Avoi d direc t exposur e
of th e SR S uni t o r wirin g t o hea t guns , welding , o r
sprayin g equipment .
• Disconnec t th e airba g connector(s ) befor e discon -
nectin g SR S harnes s connector s (se e pag e 24-12 ). O n
'95-9 6 models , connec t th e shor t connecto r t o th e
fron t passenger' s airba g connector .
• Afte r an y degre e o f fronta l bod y damage , o r afte r a
collisio n withou t airba g deployment , inspec t th e SR S
uni t fo r physica l damage . I f i t i s dented , cracked , o r
deformed , replac e it .
Inspectio n Afte r Deploymen t
After a collisio n i n whic h th e airbag s wer e deployed ,
replac e th e SR S unit , an d inspec t th e following :
1 . Inspec t al l th e SR S wir e harnesses . Replace , don' t
repair , an y damage d harnesses .
2 . Inspec t th e cabl e ree l fo r hea t damage . I f ther e is an y
damage , replac e th e cabl e reel .
3 . Afte r th e vehicl e i s completel y repaired , tur n th e
ignitio n 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 functio n
properly , g o t o SR S Troubleshooting .
• B e sur e th e SR S uni t i s installe d securely .
• D o no t disassembl e th e SR S unit .
• Stor e th e SR S uni t i n a coo l (les s tha n abou t 104°F /
40°C ) an d dr y (les s tha n 80 % humidity , n o moisture )
place . D o no t spil l wate r o r oi l o n th e SR S unit , an d
kee p it awa y fro m dust .
• Durin g installatio n o r replacement , b e carefu l no t t o
bum p (impac t wrench , hammer , etc. ) th e are a aroun d
th e SR S unit . Th e airbag s coul d accidentall y deplo y
an d caus e damag e o r injury .
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Wiring Precaution s
• Neve r attemp t t o modify , splic e o r repai r SR S wiring .
NOTE : SR S wirin g ca n b e identifie d b y specia l yello w
oute r covering .
• B e sur e to 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 .
• Mak e sur e al l SR S groun d location s ar e clea n an d
ground s ar e securel y fastene d fo r optimu m metal-to -
meta l contact . Poo r groundin g ca n caus e intermitten t
problem s tha t ar e difficul t t o diagnose . Disconnectin
g th e SR S Connecto r a t th e Under-das h
Fuse/Relay Box :
CAUTION : Avoi d breakin g th e connector ; it' s double -
locked.
1. Firs t lif t th e connecto r li d wit h a thi n screwdriver , the n
pres s th e connecto r ta b down , an d pul l th e connecto r
out.
2. T o reinstal l th e connector , pus h it int o positio n unti l i t
clicks , the n clos e it s lid .
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Precautions/Procedures
Spring-loaded Loc k Connecto r
Some SR S syste m connector s hav e a spring-loade d
lock .
Disconnectin g
T o releas e th e lock , pul l th e spring-loade d sleev e towar d
th e sto p whil e holdin g th e opposit e hal f o f th e connector .
The n pul l th e connecto r halve s apart .
NOTE : B e sur e t o pul l o n th e sleev e an d no t o n th e con -
necto r hal f itself . Connectin
g
Hol d th e pawl-sid e connecto r half , an d pres s o n th e
bac k o f th e sleeve-sid e connecto r hal f i n th e directio n
shown . A s th e tw o connecto r halve s ar e presse d
together , th e sleev e is pushe d bac k b y th e pawl .
NOTE : D o no t touc h th e sleeve .
2 . Whe n th e connecto r halve s ar e completel y connected ,
th e paw l i s released , an d th e spring-loade d sleev e
lock s th e connector .
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Spring-loaded Loc k Connecto r wit h
Built-i n Shor t Contac t
The driver' s airba g ('95-9 8 models ) an d fron t passen -
ger' s airba g ('97-9 8 models ) hav e a spring-loade d loc k
connecto r wit h a built-i n shor t contact . Whe n thi s con -
necto r i s disconnected , th e powe r termina l an d th e
groun d termina l i n th e airba g connecto r ar e automati -
call y shorted .
Backprobin g Spring-loade d Loc k
Connector s
• Whe n checkin g voltag e o r resistanc e o n thi s typ e o f
connecto r th e firs t time , i t i s necessar y t o remov e th e
retaine r t o inser t teste r probe s fro m th e wir e side . I t
i s no t necessar y t o reinstal l th e remove d retainer ; th e
terminal s wil l sta y locke d in th e connecto r housing .
• T o remov e th e retainer , inser t a fla t ti p screwdrive r
betwee n connecto r bod y an d retainer , an d carefull y
pr y ou t th e retainer . Tak e car e no t t o brea k th e con -
nector .
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