1995 ACURA TL Service Repair Manual

Security Alar m Syste m
Troubleshootin g
NOTE: Th e number s in th e tabl e sho w th e troubleshootin g sequence .
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Control Uni t Inpu t Tes t
SRS component s ar e locate d i n thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s i n th e SR S
( sectio n 24 ) befor e performin g repair s o r service .
1 . Remov e th e glov e bo x (se e sectio n 20 ).
2 . Disconnec t th e 12 P an d 18 P connector s fro m th e securit y contro l unit .
3 . Inspec t th e connecto r an d socke t terminal s t o b e sur e the y ar e al l makin g goo d contact .
I f th e terminal s ar e bent , loose , o r corroded , repai r the m a s necessary , an d rechec k th e system .
I f th e terminal s loo k OK , mak e th e followin g inpu t test s a t th e connecto r terminals .
I f an y tes t indicate s a problem , fin d an d correc t th e cause , the n rechec k th e system .
I f al l th e inpu t test s prov e OK , th e contro l uni t mus t b e faulty ; replac e it .
NOTE : Fo r th e othe r inpu t test s no t include d i n th e
tabl e below , refe r t o th e '9 5 - 9 8 Acur a 2.5T L Servic e
Manual , P/ N 61SW504 .
Trm l Wir e Tes t conditio n Test : desire d resul t Possibl e caus e i f resul t i s no t obtaine d
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Special Tool s
Tool Numbe r
07HAZ - SG0040 0
07MAZ-SP0020 A
07PAZ-001010 0
07SA Z - SW5020 0
07TA Z - SZ5020 0
07TAZ-001020 A
Description
Deploymen t Too l
SR S Servic e Connecto r
SC S Servic e Connecto r
SR S Servic e Connecto r
SRS Servic e Connecto r ( 2 )
Backprob e Adapter , 1 7 m m
Qty
1
1
1
1
1
2
Pag e Referenc e
24-50
24-2 9
24-1 4
24-2 2
24-2 1
24-39
*1 : Include d i n SR S Too l Se t 07MA Z - SM5000 B
*2: Us e wit h th e stackin g patc h cord s fro m T/ N 07SAZ-001000A , Backprob e Set .
Ref . No.
NOTE : Th e SR S Servic e Connector , T/ N 07SA Z - SW50200 , an d th e SR S Servic e Connecto r ( 2 ) , 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 ( 2 ) , 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 " 2 " jacks .
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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 3 T
o 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 T
o CRUIS E CONTRO L
SET/RESUM E SWITC H
T o DRIVER' S AIRBA G
FRON T PASSENGER' S AIRBA G
ASSEMBL Y
Replacement , pag e 24-4 6
Disposal , pag e 24-5 0
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
3 P CONNECTO R
SRS MAI N HARNES Sto FRON T PASSENGER' SAIRBAG3P ('9 6 Model) ,2P ('9 7 - 9 8 Models )
CONNECTO R
SERVIC E CHEC K
CONNECTO R (2P )
[ORN , GRN/YEL ]
SR S MAI N HARNES S
SRS UNI T GROUN D
SRS MAI N HARNES S
t o UNDER-DAS H
FUSE/RELA Y BO X
2 P CONNECTO R
MEMOR Y ERAS E SIGNA L
(MES ) CONNECTO R (2P )
[GRY , GRY ] or [GRN , GRN ]
SRS UNI T(Includin g safin g senso rand impac t sensor)
Replacement , pag e 24-5 6
SR S MAI N HARNES S
to SR S UNI T18P CONNECTO R
SR
S MAI N HARNES S
to CABL E REE L2P CONNECTO R
DRIVER'
S AIRBA G
ASSEMBL Y
Replacement ,
pag e 24-4 6
Disposal , pag e 24-50
CABL E REE LReplacement ,
pag e 24-5 2
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Precautions/Procedures
General 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 sign s o f bein g droppe d
o r improperl y handled , suc h a s dents , crack s o r defor -
mation :
— Airba g assemblie s
— Cabl e ree l
— SR S uni t
Use 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 .
Do no t instal l use d SR S part s fro m anothe r vehicle .
When 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 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 :
— 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/resum e 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
to bum p th e SR S unit ; th e airbag s coul d accidentall y
deploy 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 .
The origina l radi o ha s a code d thef t protectio n circuit .
B e sur e t o 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 a '9 6 model , 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 a '9 6 mode l
an d bot h airba g connector s o n a '9 7 - 9 8 model s hav e
built-i n shor t contact s (se e pag e 24-10 ).
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 .
AIRBA G CONNECTOR S(with built-i n shor t contact )
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 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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SRS Uni t Precaution s
Take 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 disconnect -
in g SR S harnes s connector s (se e pag e 24-11 ). O n a
'9 6 model , 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 .
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
the SR S unit . Th e airbag s coul d accidentall y deplo y
and caus e damag e o r injury .
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 .
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Precautions/Procedures
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
problems 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.
UNDER-DAS H FUSE/RELA Y BO X
SRSMAI NHARNES S
TAB
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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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 .
SPRING-LOADE DSLEEVE
STOP
Do no t pul l o n thi shalf o f th e connector .
Connecting
Hold 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 .
PAWL
SPRING-LOADE D
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 .
SPRING-LOADE DSLEEVE
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