ACURA TL 1995 Service Repair Manual

Control Uni t Inpu t Tes t
SRS component s ar e locate d in 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 .
— If an y tes t indicate s a problem , fin d an d correc t th e cause , the n rechec k th e system .
— If 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 .
SECURIT YCONTROL UNI T
18 P CONNECTO R
WIR E SID E O F FEMAL E TERMINAL S
12PCONNECTO R
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Security Alarm System

Control Unit Input Test (cont'd)

Trml
Wire
Test condition
Test: Desired result
Possible cause if result is not obtainedProCarManuals.com

Trml Wire
Test condition

Test: Desired result
Possible cause if result is not obtainedProCarManuals.com

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

Security Alar m Syste m
Passenger' s Doo r Loc k Kno b Switc h Tes t
1. Remov e th e passenger' s doo r pane l (se e sectio n 20 ).
2 . Disconnec t th e 4 P connecto r fro m th e doo r loc k actu -
ator .
4PCONNECTO R
WIRE SID E O F FEMAL E TERMINAL S
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 .
DOOR LOC K KNO B
UNLOC K
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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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