fuse box ACURA RL KA9 1996 Service Manual Online

Troubleshooting
Recirculation Contro l Moto r
Recirculatio n contro l door s d o
no t chang e betwee n FRES H an d
RECIRCULATE .
Check th e No . 3 (7. 5 A ) fus e in th eunder-das h fuse/rela y box .
I s th e fus e OK ?
Replac e th e fuse , an d recheck .
RECIRCULATIO N CONTRO L MOTO R4P CONNECTO R
Check fo r a n ope n in th e wire :
1 . Disconnec t th e recirculatio n
contro l moto r 4 P connector .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 1 termina l an d bod y
ground .
I s ther e batter y voltage ?
Chec k th e recirculatio n contro l
motor:1. Tur n th e ignitio n switc h OFF .
2 . Tes t th e recirculatio n contro l
moto r (se e pag e 22-59 ).
I s th e recirculatio n contro l
moto r
OK?
To pag e 22-3 5
Repai r ope n in th e wir e betwee nthe No . 3 fus e an d th e recircula -tion contro l motor . Wir
e sid e o f femal e terminal s
Chec k th e recirculatio n contro l
linkag e an d doors :
1 . Remov e th e recirculatio n con -
tro l moto r (se e pag e 22-59 ).
2 . Chec k th e recirculatio n contro l
linkag e an d door s fo r smoot h
movement .
D o th e recirculatio n contro l link -
ag e an d door s mov e smoothly ? Repai
r th e recirculatio n contro l
linkag e o r doors .
Replac e th e recirculatio n contro l
motor.
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Climate Contro l Uni t
No heate r an d A/ C in eithe r man -
ua l o r AUT O modes .
Chec k th e No . 3 (7. 5 A ) fus e in th e
under-das h fuse/rela y box , an d
th e No . 5 6 (7. 5 A ) fus e i n th e
under-hoo d fuse/rela y box .
Ar e th e fuse s OK ?
Chec k fo r a n ope n in th e wire :
1 . Remov e th e climat e contro l
uni t (se e pag e 22-55 ), an d dis -
connec t th e 8 P an d 20 P con -
nectors .2. Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 1 termina l o f th e 8 P
connecto r an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a shor t i n th e wire :
1 . Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e No . 3 termina l o f th e cli -
mat e contro l uni t 8 P connec -
to r an d bod y ground .
I s ther e continuity ?
Chec k fo r a n ope n in th e wire :
Chec k fo r continuit y betwee n th e
No . 7 termina l o f th e climat e con -
tro l uni t 8 P connecto r an d bod y
ground .
Is ther e continuity ?
Chec k fo r loos e wire s o r poo r
connection s a t th e climat e con -
tro l uni t 8 P connector . I f th e con -
nection s ar e good , substitut e a
known-goo d climat e contro l unit ,
an d recheck . I f th e symptom/indi -
catio n goe s away , replac e th e
origina l climat e contro l unit .
Replac e th e fuse(s) , an d recheck .
CLIMATE CONTRO L UNI T 8 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e No . 3 fus e an d th e climat e
contro l unit . Wir
e sid e o f femal e terminal s
Repai r shor t i n th e wir e betwee n
th e climat e contro l unit , th e ai r
mi x contro l moto r an d th e mod e
contro l motor .
Chec k fo r a n ope n i n th e wir e
betwee n th e climat e contro l uni t
an d bod y ground . I f th e wir e i s
OK , chec k fo r poo r groun d a t
G40 1 an d G402 .
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Radiator Fa n
Radiato r fa n doe s no t ru n a t hig h
spee d (bu t condense r fa n run s a t
hig h speed , an d bot h fan s ru n a t
lo w speed) .
Check th e No . 3 (7. 5 A ) i n th e
underdas h fuse/rela y box , an d th e
No . 4 7 (2 0 A ) fus e i n th e under -
hoo d fuse/rela y box .
Ar e th e fuse s OK ?
Remov e th e radiato r fa n rela y
fro m th e under-hoo d rela y bo x C ,
an d tes t i t (se e pag e 22-64 ).
I s th e rela y OK ?
Chec k fo r a n ope n in th e wire :
Measur e th e voltag e betwee n th e
No . 3 termina l o f th e radiato r fa n
rela y 4 P socke t an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e wire :
Connec t th e No . 1 an d No . 3 ter -
minal s o f th e radiato r fa n rela y4P socke t wit h a jumpe r wire .
Doe s th e radiato r fa n run ?
Chec k fo r a n ope n in th e wire :
1 . Disconnec t th e jumpe r wire .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 2 termina l o f th e radi-
ato r fa n rela y 4 P socke t an d
bod y ground .
I s ther e batter y voltage ?
Repai r ope n i n th e L T GRN/BL K
wir e betwee n th e radiato r fa n
rela y an d th e fa n contro l unit .
Replac e th e fuse(s) , an d recheck .
Replace th e radiato r fa n relay . RADIATO
R FA N RELA Y 4P SOCKE T
Repai r ope n in th e wir e betwee n
th e No . 4 7 fus e an d th e radiato r
fa n relay .
Repai r ope n in th e wir e betwee n
th e radiato r fa n rela y an d th e
radiato r fan .
JUMPE RWIRE
Repai r ope n in th e wir e betwee n
th e No . 3 fus e an d th e radiato r
fa n relay .
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Troubleshooting
Condenser Fa n
Condense r fa n doe s no t ru n a t
hig h spee d (bu t radiato r fa n run s
a t hig h speed , an d bot h fan s ru n
a t lo w speed) .
Chec k th e No . 3 (7. 5 A ) fus e i n
th e under-das h fuse/rela y box .
I s th e fus e OK ?
Remov e th e radiato r fa n mai n
rela y fro m th e under-hoo d rela y
bo x A , an d tes t i t (se e pag e
22-64 ).
Is th e rela y OK ?
Chec k fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e No . 3 termina l o f th e radi -
ato r fa n mai n rela y 5 P socke t
an d bod y ground .
I s ther e batter y voltage ?
Is ther e continuity ?
Repair ope n i n th e L T GRN/BL K
wir e betwee n th e radiato r fa n
mai n rela y an d th e fa n contro l
unit . Replac
e th e fuse , an d recheck .
Replac e th e radiato r fa n mai n
relay.RADIATO R FA N MAI N RELA Y 5 P SOCKE T
BLK/YE L
Repair ope n i n th e wir e betwee n
th e No . 3 fus e an d th e radiato r
fa n mai n relay .
Chec k fo r a n ope n i n th e wir e
betwee n th e radiato r fa n mai n
rela y an d bod y ground . I f the
wir e is OK , chec k fo r poo r groun d
atG301 .
Chec
k fo r a n ope n in th e wire :
1. Tur n th e ignitio n switc h OFF .2. Chec k fo r continuit y betwee n
th e No . 4 termina l o f th e radi -
ator fa n mai n rela y 5 P socke tand bod y ground .
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Troubleshooting
Both Fan s Lo w Spee d an d Condense r Fa n Hig h Spee d
Both fan s d o no t ru n a t lo w
speed , an d condense r fa n doe s
no t ru n a t hig h spee d (bu t radia -
to r fa n run s a t hig h speed) .
Chec k th e No . 3 (7. 5 A ) fus e i n th e
under-das h fuse/rela y box , an d th e
No . 5 0 (2 0 A ) fus e i n th e under -
hoo d fuse/rela y box .
Ar e th e fuse s OK ?
Remov e th e condense r fa n rela y
fro m th e under-hoo d rela y bo x A ,
an d tes t i t (se e pag e 22-64 ).
I s th e rela y OK ?
Chec k fo r a n ope n in th e wire :
Measur e th e voltag e betwee n th e
No . 1 termina l o f th e condense r
fa n rela y 4 P socke t an d bod y
ground .
I s ther e batter y voltage ?
Chec k th e condense r fan :
Connec t th e No . 1 an d No . 3 ter -
minal s o f th e condense r fa n rela y
4P socke t wit h a jumpe r wire .
Replac e th e fuse(s) , an d recheck .
Replac e th e condense r fa n relay .
CONDENSER FA N RELA Y 4 P SOCKE T
Repai r ope n i n th e wir e betwee n
th e No . 5 0 fus e an d th e conden -
se r fa n relay .
JUMPE RWIRE
Does th e condense r fa n run ? T
o pag e 22-4 5
T o pag e 22-4 6
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Compressor
Compresso r clutc h doe s no t
engage .
Chec k th e No . 3 (7. 5 A ) an d No . 5
(2 0 A ) fuse s in th e under-das h fuse /
rela y box .
Ar e th e fuse s OK ?
Remov e th e compresso r clutc h
rela y fro m th e under-hoo d rela y
bo x A , an d tes t i t (se e pag e
22-64 ).
Is th e rela y OK ?
Chec k fo r a n ope n in th e wire :
Measur e th e voltag e betwee n th e
No. 1 termina l o f th e compresso rclutch rela y 4 P socke t an d bod yground .
Is ther e batter y voltage ?
Chec k th e compresso r clutch :
Connec t th e No . 1 an d No . 3 termi -
nal s o f th e compresso r clutc h rela y
4P socke t wit h a jumpe r wire .
Does th e compresso r clutc h click ?
Chec k fo r a n ope n in th e wire :
1 . Disconnec t th e jumpe r wire .
2. Tur n th e ignitio n switc h O N (II) .3. Measur e th e voltag e betwee nthe No . 2 termina l o f th e com -presso r clutc h rela y 4 P socke tand bod y ground .
Is ther e batter y voltage ?
T o pag e 22-5 1 Replac
e th e fuse(s) , an d recheck .
Replac e th e compresso r clutc h
relay .
COMPRESSOR CLUTC H RELA Y
4 P SOCKE T
Repai r ope n i n th e wir e betwee n
th e No . 5 fus e an d th e compres -
so r clutc h relay .
T o pag e 22-5 0
Repai r ope n i n th e wir e betwee n
th e No . 3 fus e an d th e compres -
so r clutc h relay . JUMPE
R
WIRE
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A/C Syste m
Both fan s an d compresso r d o no t
wor k a t all .
Chec k th e No . 3 (7. 5 A ) fus e i n
th e under-das h fuse/rela y box .
I s th e fus e OK ?
Chec k fo r a n ope n in th e wire :
1 . Disconnec t th e fa n contro l
uni t 12 P connector .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e No . 7 termina l an d bod y
ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e wire :
1 . Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e No . 3 termina l o f th e fa n
contro l uni t an d bod y ground .
I s ther e continuity ?
YES
Chec k fo r a n ope n in th e wire :
1 . Reconnec t th e fa n contro l uni t
12P connector .2. Disconnec t th e A/ C pressur e
switc h 4 P connector .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Measur e th e voltag e betwee n
th e No . 4 termina l an d bod y
ground .
I s ther e batter y voltage ?
Chec k th e fa n contro l unit :
Measur e th e voltag e betwee n th e
No . 4 termina l o f th e fa n contro l
uni t 12 P connecto r an d bod y
groun d wit h th e fa n contro l uni t
12 P connecto r connected .
I s ther e batter y voltage ?
Chec k fo r loos e wire s o r poo r
connection s a t th e fa n contro l
uni t 12 P connector . I f th e con -
nection s ar e good , substitut e a
known-goo d fa n contro l unit ,
an d recheck . I f th e symptom /
indicatio n goe s away , replac e
th e origina l fa n contro l unit . Replac
e th e fuse , an d recheck .
FAN CONTRO L UNI T 12 P CONNECTO R
Repai r ope n i n th e wir e betwee n
th e No . 3 fus e an d th e fa n con -
tro l uni t Wir
e sid e o f femal e terminal s
Chec k fo r a n ope n i n th e wir e
betwee n th e fa n contro l uni t an d
bod y ground . I f th e wir e i s OK ,
chec k fo r poo r groun d a t G40 1
an d G402 .
A/C PRESSUR E SWITC H 4P CONNECTO R
T o pag e 22-5 4
Wire sid e o f femal e terminal s
Repai r ope n i n th e wir e betwee n
th e A/ C pressur e switc h an d th e
fa n contro l unit .
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Troubleshooting
Tips an d Precaution s
Before Troubleshootin g
• Chec k applicabl e fuse s i n th e appropriat e fuse/rela y
box.
• Chec k th e batter y fo r damage , stat e o f charge , an d
clea n an d tigh t connections .
• Chec k th e alternato r bel t tension .
CAUTION :
• D o no t quick-charg e a batter y unles s th e batter y
groun d cabl e ha s bee n disconnected , otherwis e yo u
wil l damag e th e alternato r diodes .
• D o no t attemp t t o cran k th e engin e wit h th e batter y
groun d cabl e loosel y connecte d o r yo u wil l severel y
damag e th e wiring .
Handlin g Connector s
• Mak e sur e th e connector s ar e clea n an d hav e n o loos e
wire terminals .
• Mak e sur e multipl e cavit y connector s ar e packe d wit h
greas e (excep t watertigh t connectors) .
• Al l connector s hav e push-dow n releas e typ e locks .
LOCKIN G TA B
LOCKIN G TA B
• Som e connector s hav e a cli p o n thei r sid e use d t o
attac h the m t o a moun t bracke t o n th e bod y o r o n
anothe r component . Thi s cli p ha s a pul l typ e lock .
• Som e mounte d connector s canno t b e disconnecte d
unles s yo u firs t releas e th e loc k an d remov e th e
connecto r fro m it s moun t bracket .
LOCKINGPAWL O N
OTHE R
HAL F O F
CONNECTO R
Pull t odisengag eBRACKET
• Th e back s o f som e connector s ar e packe d wit h
grease . Ad d greas e i f necessary . I f th e greas e i s
contaminated , replac e it .
•
Chec k fo r loos e retaine r an d rubbe r seals .
RETAINE RRUBBER SEA LRETAINE R
• Neve r tr y t o disconnec t connector s b y pullin g o n
thei r wires ; pul l o n th e connecto r halve s instead .
• Alway s reinstal l plasti c covers .
• Befor e connectin g connectors , mak e sur e th e
terminal s ar e i n plac e an d no t bent .
BENT TERMINA L
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IGNITION CONTRO LMODULE (ICM )
UNDER-HOO D RELA YBOX B
DRIVER' S POWE R WINDO W MOTO R RELA Y B('98-0 1 models )• HOR N RELA Y('96-97 models )• POWE R WINDO W MASTE R SWITC H
RELA Y ('98-0 1 models )
CIGARETT E LIGHTE R RELA Y
• FRON T SEA T HEATE R RELA Y
('96-97 models )• DRIVER' S POWE R WINDO W MOTO R RELA Y A
('9 8-0 1 models )
SPAR K PLU G VOLTAG E
DETECTIO N MODUL E
DIMME R RELA Y •
AB S PUM P MOTO R RELA Y
('96-99 models )• VS A FAIL-SAF E RELA Y
('0 0-0 1 models )
• HEADLIGH T RELA Y
('96-98 models )• HEADLIGH T
LO W BEA M RELA Y
('99-01 models )
TAILLIGH T RELA Y
('9 6 - 9 8 models )
• HEADLIGH T HIG H BEA M RELA Y
('9 9-0 1 models )
UNDER-HOO
D
FUSE/RELAYBOX
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5. Remov e th e dashboar d lowe r cove r (se e sectio n 20 ).
6 . Remov e th e mountin g nu t an d bolt , an d pul l th e
under-das h fuse/rela y bo x ou t fro m unde r th e dash .
BOLT
Under-das h Fuse/Rela y Bo x
Removal/Installatio n
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 .
NOTE : Th e PC M memor y mus t b e rese t afte r reconnectin g
th e batter y (se e sectio n 11 ).
Removal :
1. Mak e sur e yo u hav e th e anti-thef t cod e fo r th e radi o
an d th e navigatio n system , the n writ e dow n th e fre -
quencie s fo r th e radio' s prese t buttons .
2 . Disconnec t th e batter y negativ e cable , the n
disconnec t th e positiv e cable , an d wai t a t leas t
3 minutes .
3 . Disconnec t th e airba g connector s (se e sectio n 24 ).
4 . Disconnec t th e connector s fro m th e under-das h fuse /
relay box, including the SRS main harness (see
sectio n 24 ).
UNDER-DAS H FUSE/RELA Y BO X
SRS MAI N HARNES S
NUT
Installation :
1 . Connec t th e connector s t o th e under-das h fuse/rela y
box, the n instal l th e under-das h fuse/rela y bo x in th e
revers e orde r o f remova l (se e sectio n 24 ).
2 . Instal l th e dashboar d lowe r cove r (se e sectio n 20 ).
3 . Connec t th e airba g connector s (se e sectio n 24 ).
4 . Connec t th e batter y positiv e cable , the n connec t th e
negativ e cable .
5 . Confir m tha t al l system s wor k properly .
6 . Ente r th e anti-thef t cod e fo r th e radi o an d th e navi -
gatio n system , the n ente r th e customer' s radi o sta -
tio n presets .
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