Test ACURA TL 1995 Service Repair Manual

Security Alar m Syste m
Securit y Indicato r Test/Replacemen t Hoo d Switc h Test/Replacemen t
1. Remov e th e driver' s doo r pane l (se e sectio n 20 ).
2 . Disconnec t th e 2 P connecto r fro m th e securit y indi -
cator .
3 . Carefull y pr y ou t th e securit y indicato r fro m th e
driver' s doo r panel .
INDICATO R
DRIVER' S
DOO R PANE L
WIR E SID E O F
FEMAL E TERMINAL S 2
P CONNECTO R
Fro m No.3 0 (20A ) FUS E
(Unde r - hoo d fuse/rela y box )
T o SECURIT Y
CONTRO L UNI T
4. Tes t th e securit y indicato r b y connectin g batter y
powe r t o th e No . 2 terminal , an d groun d t o th e No . 1
terminal .
5. I f th e securit y indicato r doe s no t com e on , replac e it . 1
. Ope n th e hood .
2 . Disconnec t th e 2 P connecto r fro m th e hoo d switch .
3 . Chec k fo r continuit y betwee n th e terminal s i n eac h
switc h positio n accordin g t o th e table .
LEVE R
HOOD SWITC H
2 P CONNECTO R
TERMINA L SID E O F MAL E TERMINAL S
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Security Trunk Latch Switch Test

1. Open the trunk lid.

2. Disconnect the 2P connector from the security trunk

latch switch.

3. Check for continuity between the terminals in each

switch position according to the table.

TRUNK LATCH

SWITCH

2P

CONNECTOR

LOCK

TERMINAL SIDE OF MALE TERMINALS

4. Be sure to unlock the trunk latch after testing the

switch.
Security Trunk Key Cylinder

Switch Test

1. Open the trunk lid.

2. Disconnect the 2P connector from the security trunk

key cylinder switch.

3. Check for continuity between the terminals in each

switch position according to the table.

UNLOCK
TRUNK KEY

CYLINDER

REED SWITCH

2P CONNECTOR

TERMINAL SIDE OF MALE TERMINALSProCarManuals.com

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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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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Troubleshooting - '95-9 6 Model s
Self-diagnosti c Procedure s
The self-diagnosti c functio n o f th e SR S syste m allow s i t t o locat e th e cause s o f syste m problem s an d t o stor e thi s informa -
tio n in memory . Fo r easie r troubleshooting, this dat a ca n b e retrieve d vi a a dat a lin k circuit .
Whe n yo u tur n th e ignitio n switc h O N (II) , th e SR S indicator will com e on . I f i t goe s of f afte r si x seconds , th e syste m is
normal .
I f ther e i s a n abnormality , th e syste m locate s an d define s th e problem , store s thi s informatio n i n memory , an d turn s
th e SR S indicato r ligh t on .
NOTE : Th e dat a wil l remai n i n th e memor y eve n whe n th e ignitio n switc h is turne d of f o r i f th e batter y i s disconnected .
Whe n yo u connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P) , an d tur n th e ignitio n switc h O N (II) ,
th e SR S indicato r ligh t wil l indicat e th e diagnosti c troubl e cod e (DTC ) b y th e numbe r o f blinks .
Afte r readin g an d recordin g th e DTC , procee d wit h th e troubleshootin g fo r thi s code .
Precaution s
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 accidenta l airba g deploymen t an d possibl e injury .
Wheneve r th e ignitio n switc h is 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 injuries .
Befor e yo u remov e th e SR S mai n harness , disconnec t th e driver' s airba g connector , an d connec t th e shor t connecto r
(RED ) t o th e fron t passenger' s airba g connector .
D o no t touc h a teste r prob e t o th e terminal s i n th e SR S uni t o r harnes s connectors , an d d o no t connec t th e terminal s
wit h a jumpe r wire . Us e onl y th e tes t harnes s an d th e SC S servic e connectors .
Fo r backprobin g spring-loade d loc k typ e connectors , refe r t o pag e 24-12 .
Mak e sur e th e batter y i s sufficientl y charge d (se e sectio n 23 ). I f th e batter y i s dea d o r low , o r th e back-u p powe r circui t
i n th e SR S uni t i s faulty , measurin g value s won' t b e correct . Therefore , i n cas e o f multipl e DTC s includin g DT C 5- 1 (SR S
unit) , replac e th e SR S uni t first , the n troubleshoo t th e othe r code(s) .
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Reading th e DT C
Whe n th e SR S indicato r ligh t i s on , rea d th e DT C usin g on e o f thes e methods :
A . Connec t th e Hond a PG M Teste r t o th e 16 P Dat a Lin k Connecto r (DLC) , an d follo w th e tester' s prompts . I f th e teste r
indicate s n o DTC , double-chec k b y jumpin g th e servic e chec k connecto r an d watchin g th e SR S indicato r ligh t (se e
page 24-15).
DAT A LIN K CONNECTO R (DLC ) (16P )
HOND A PG M TESTE R
24-14
Troubleshooting - '95-96 Models
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SCS SERVIC E CONNECTO R07PAZ-001010 0
Troubleshootin g - '95-9 6 Model s
Troubleshootin g Intermitten t Failure s
If ther e wa s a malfunction , bu t i t doesn' t recur , i t wil l b e store d i n th e memor y a s a n intermitten t failure, and th e SR S indi -
cato r ligh t come s on .
Afte r checkin g th e DTC , troubleshoo t a s follows :
1 . Rea d th e DT C (se e "Readin g th e DTC") .
2 . Eras e th e DT C memor y (se e "Erasin g th e DT C Memory") .
3 . Wit h th e shif t leve r i n neutral , tur n th e ignitio n switc h O N (II) , an d le t th e engin e idle .
4 . Connec t th e SC S servic e connecto r t o th e servic e chec k connector . Th e SR S indicato r ligh t wil l blin k continuou s shor t
blinks .
5. Shak e th e wir e harnes s an d th e connector , and/o r tak e a test-driv e (quic k acceleration , quic k braking , cornering ) t o
fin d th e caus e o f th e intermitten t failure . I f th e proble m recurs , th e SR S indicato r ligh t wil l sto p blinkin g an d sta y on .
6 . I f yo u can' t duplicat e th e intermitten t failure , th e syste m is O K a t thi s time . Disconnec t th e SC S servic e connector .
Erasing th e DT C Memor y
To eras e th e DTC(s ) fro m th e SR S unit , us e a Hond a
PG M Teste r (se e th e Hond a PG M Teste r SR S Vehicl e
Syste m Supplement) , o r th e followin g procedure . 1
. Mak e sur e th e ignitio n switc h is OFF .
2 . Connec t th e SC S servic e connecto r t o th e ME S con -
necto r (2P) . D o no t us e a jumpe r wire .
3. Tur n th e ignitio n switc h O N (II) .
4. Th e SR S indicato r ligh t come s o n fo r abou t si x sec -
ond s an d goe s off . Remov e th e SC S servic e connec -
tor fro m th e ME S connecto r withi n fou r second s
after th e SR S indicato r ligh t wen t off .
5 . Th e SR S indicato r ligh t come s o n again . Reconnec t
th e SC S servic e connecto r t o th e ME S connecto r
(2P ) withi n th e fou r second s afte r th e SR S indicato r
ligh t come s on .
6 . Th e SR S indicato r ligh t goe s off . Remov e th e SC S
servic e connecto r fro m th e ME S connecto r (2P )
withi n fou r seconds .
7 . Th e SR S indicato r ligh t indicate s tha t th e memor y i s
erase d b y blinkin g tw o times .
8 . Tur n th e ignitio n switc h OFF , an d wai t fo r te n sec -
onds .
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Troubleshooting - '97-9 8 Model s
Self-diagnosti c Procedure s
The self-diagnosti c functio n o f th e SR S syste m allow s it t o locat e th e cause s o f syste m problem s an d t o stor e thi s informa -
tio n in memory . Fo r easie r troubleshooting , thi s dat a ca n b e retrieve d vi a a dat a lin k circuit .
Whe n yo u tur n th e ignitio n switc h O N (II) , th e SR S indicato r wil l com e on . I f i t goe s of f afte r si x seconds , th e syste m is
normal .
I f ther e i s a n abnormality , th e syste m locate s an d define s th e problem , store s thi s informatio n i n memory , an d turn s
th e SR S indicato r ligh t on .
NOTE : Th e dat a wil l remai n in th e memor y eve n whe n th e ignitio n switc h i s turne d of f o r i f th e batter y is disconnected .
Whe n yo u connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P) , an d tur n th e ignitio n switc h O N (II) ,
th e SR S indicato r ligh t wil l indicat e th e diagnosti c troubl e cod e (DTC ) b y th e numbe r o f blinks .
Afte r readin g an d recordin g th e DTC , procee d wit h th e troubleshootin g fo r thi s code .
Precaution s
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 accidenta l airba g deploymen t an d possibl e injury .
Whenever the ignitio n switc h is 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 injuries .
Befor e yo u remov e th e SR S mai n harness , disconnec t th e driver' s airba g connector, and th e fron t passenger' s airba g
connector .
Mak e sur e th e batter y i s sufficientl y charge d (se e sectio n 23 ). I f th e batter y i s dea d o r low , measurin g value s won' t b e
correct .
D o no t touc h a teste r prob e t o th e terminal s i n th e SR S uni t o r harnes s connectors , an d d o no t connec t th e terminal s
wit h a jumpe r wire . Us e onl y th e tes t harnes s an d th e SC S servic e connectors .
Fo r backprobin g spring-loade d loc k typ e connectors , refe r t o pag e 24-11 .
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Reading th e DT C
Whe n th e SR S indicato r ligh t i s on , rea d th e DT C usin g on e o f thes e methods :
A . Connec t th e Hond a PG M Teste r t o th e 16 P Dat a Lin k Connecto r (DLC) , an d follo w th e tester' s prompts . I f th e teste r
indicate s n o DTC , double-chec k b y jumpin g th e servic e chec k connecto r an d watchin g th e SR S indicato r ligh t (se e
page 24-39 ).
DAT A LIN K CONNECTO R (DLC ) (16P )
(cont'd )
24-39
HOND A PG M TESTE R
Troubleshooting - '97-98 Models
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