1996 ACURA RL KA9 fuse box

(From pag e 19-80 )
I s th e fus e OK ?
Chec k th e under-hoo d AB S fuse /
rela y box :
Measur e th e voltag e betwee n th e
under-hoo d fuse/rela y bo x 7 P
connecto r termina l No . 4 an dbod y ground .
Is ther e batter y voltage ?
Chec k fo r a n ope n i n th e B 1 cir -
cuit :
1 . Remov e th e fron t fail-saf e relay .
2 . Measur e th e voltag e betwee n
termina l No . 2 an d bod y ground .
I s ther e batter y voltage ?
I s th e rela y OK ?
(T o pag e 19-82 ) UNDER-HOO
D FUSE/RELA Y BO X
Replac e th e fuse , an d recheck .
NOTE : Reinstal l th e fus e i f i t i s OK .
UNDER-HOO D FUSE/RELA Y BO X7P CONNECTO R
Repair ope n i n th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d fron t fail-saf e relay .
1
Termina l sid e o f
femal e terminal s
Replac e th e fron t fail-saf e relay .
Chec
k th e fron t fail-saf e rela y (se e
sectio n 23) . FRON
T FAIL-SAF E RELA Y CONNECTO R
Replac
e th e under-hoo d fuse /
rela y box . (Interna l open )
Wire sid e o f femal e terminal s
Chec
k th e AB S B 1 (2 0 A ) fus e in th e
under-hoo d fuse/rela y box .
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Component Locations

SERVICE CHECK CONNECTOR (2P)

RIGHT-REAR WHEEL SENSOR

ABS CONTROL UNIT

MODULATOR UNIT

LEFT-REAR

WHEEL SENSOR

RIGHT-FRONT

WHEEL SENSOR

UNDER-HOOD RELAY BOX C
UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR

GAUGE ASSEMBLY
UNDER-HOOD FUSE/RELAY BOX

ABS INDICATOR

UNDER-DASH FUSE/RELAY BOX

R/C MIRROR

(7.5 A) FUSE

METER

(7.5 A) FUSE
STOP/HORN

(15 A) FUSE

ABS
UNIT

(7.5 A) FUSE

ABS

(20 A) FUSE
ABS PUMP

MOTOR RELAY

METER

(15 A) FUSE
BATTERY

(120 A) FUSE

ABS MOTOR

(40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C

GAUGE RELAY

FAIL-SAFE RELAY
UNDER-HOOD FUSE/RELAY BOXProCarManuals.com

Troubleshooting
ABS Indicato r Doe s No t Com e O n
AB S indicato r doe s no t com e o nwhe n th e ignitio n switc h i sturne d O N (II) .
Chec k th e indicato r powe r
sourc e circuit :
Turn th e ignitio n switc h O N (II) .
Doe s th e brak e syste m indi -cato r com e on ?
Chec k th e AB S contro l unit :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e AB S contro lunit 12 P connector .3. Tur n th e ignitio n switc h O N (II) .
Doe s th e AB S indicato r
com e on ?
Is th e bul b OK ?
Chec k fo r a shor t t o bod y groun d
i n th e WAL P circuit :
1 . Disconnec t th e gaug e assem -
bl y 30 P connector .
2 . Chec k fo r continuit y betwee n
termina l No . 2 2 an d bod yground .
I s ther e continuity ?
(T o pag e 19-123 ) Gaug
e rela y stuc k OFF .
Blow n METE R (1 5 A ) fus e in th e
under-hoo d fuse/rela y box .
Blow n METE R (7. 5 A ) fus e i n
th e under-das h fuse/rela y box .
Repai r ope n in th e wir e betwee n
th e METE R (1 5 A ) fus e an d th e
gaug e assembly .
Repai r ope n i n th e wir e
betwee n th e METE R (7. 5 A )
fus e an d bod y ground .
Replac e th e under-hoo d fuse /
rela y bo x o r under-das h fuse /
rela y box . (Ope n circui t insid e
the box. )
Chec k fo r loos e AB S contro l uni t
connectors . I f necessary , substi -
tut e a known-goo d AB S contro l
uni t an d recheck .
Replac e th e AB S indicato r bulb .
GAUGE ASSEMBL Y 30 P CONNECTO R
Repai r shor t t o bod y groun d in th e
wir e betwee n th e gaug e assembl y
and th e AB S contro l unit .Wire sid e o f femal e terminal s
Chec
k th e AB S indicato r bul b i n
th e gaug e assembly .
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Troubleshooting
ABS Indicato r Doe s No t G o Of f (N o DTC )
Is th e fus e OK ?
Chec k fo r a n ope n i n th e GN D
circuit :
1. Connec t th e AB S contro l uni t22P connecto r termina l No . 1to bod y groun d wit h a jumpe rwire.2. Tur n th e ignitio n switc h O N (II) .
Doe s th e AB S indicato r g o off ?
Chec k fo r a n ope n in th e IG 2 cir -
cuit :Measur e th e voltag e betwee n th eAB S contro l uni t 22 P connecto rterminal No . 1 1 an d bod y ground .
Is ther e batter y voltage ?
Chec k th e AB S contro l unit :
Connec t th e AB S contro l uni t 12 Pconnecto r termina l No . 1 to bod ygroun d wit h a jumpe r wire .
Does th e AB S indicato r g o off ?
(T o pag e 19-125 ) Replac
e th e fus e an d recheck .
ABS CONTRO L UNI T 22 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e AB S contro l uni t an d bod y
ground .
Repai r poo r groun d (G404) .
Repai r ope n in th e wir e betwee n
th e R/ C MIRRO R (7. 5 A ) fus e an d
th e AB S contro l unit .
Chec k fo r loos e AB S contro l uni t
connectors . I f necessary , substi -
tut e a known-goo d AB S contro l
unit an d recheck .
Wire sid e o f femal e terminal s
AB
S CONTRO L UNI T 12 P CONNECTO R
JUMPE R
WIRE
JUMPE R
WIR E
With engin e running , th e AB Sindicato r i s ON .
Wit h th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), n o DT C is indicated .
Chec k th e R/ C MIRRO R (7. 5 A ) fus e
i n th e under-das h fuse/rela y box ,
an d reinstal l th e fus e if i t i s OK .
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Troubleshooting
DTC 52 : Moto r Stuc k OF F
Whe n th e vehicl e starts , th eAB S indicato r conie s on .Wit h th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 52 is indicated .
Check th e AB S MOTO R (4 0 A ) fus ein th e under-hoo d fuse/rela y box ,and reinstal l th e fus e if i t i s OK .
Is th e fus e OK ?
Chec k th e AB S UNI T (7. 5 A ) fus e
in th e under-hoo d fuse/rela y box ,and reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Chec k th e pum p moto r rela y (se e
sectio n 23 ).
I s th e rela y OK ?
Chec k th e moto r circuit :
Connec t th e pum p moto r rela y
connecto r termina l No . 3 to No . 4
wit h a jumpe r wir e fo r a moment .
Does th e pum p moto r operate ?
Chec k fo r a n ope n in th e MOTO R
circuit :
1 . Disconnec t th e pum p moto r
connector .2. Connec t th e pum p moto rrelay connecto r termina l No .3 to No . 4 wit h a jumpe r wire .3. Measur e th e voltag e betwee n
th e pum p moto r connecto r
terminal No . 1 an d bod yground .
Is ther e batter y voltage ?
(T o pag e 19-135 ) Replac
e th e fus e an d recheck .
NOTE : Connec t th e pum p moto r rela y
connecto r termina l No . 3 to No . 4 fo r a
moment , an d rechec k th e fuse . I f th e fus e
i s blown , chec k fo r a shor t t o bod y
groun d i n th e moto r powe r sourc e circuit .
Replac e th e fus e an d recheck .
NOTE: Connec t th e pum p moto r rela y
connecto r termina l No . 3 to No . 4 fo r a
moment , an d rechec k th e fuse . I f th efus e i s blown , chec k fo r a shor t t o bod y
groun d i n th e MC K circuit .
Replac e th e pum p moto r relay .
PUMP MOTO R RELA Y CONNECTO R
Chec k th e PM R circuit .
(T o pag e 19-136 )
Repai r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d th e pum p motor .
Terminal sid e o f femal e terminal s
PUM
P MOTO R CONNECTO R
JUMPE
R WIR E
Termina l sid e o f femal e terminal s
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DTC 53 : Moto r Stuc k O N
Wit h th e ignitio n switc h O N
(II) , th e AB S indicato r doe s
not g o off .Wit h th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 53 is indicated .
Chec k tha t th e pum p moto r oper -
ate s wit h th e ignitio n switc h OFF .
Doe s th e pum p moto r operate ?
Remov e th e AB S UNI T (7. 5 A ) fus e
i n th e under-hoo d fuse/rela y box .
I s th e fus e OK ?
Chec k fo r a n ope n i n th e MC K
circuit :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e under-hoo d fuse/rela y bo x
7P connecto r termina l No . 3an d bod y ground .
I s ther e abou t 1 1 V ?
Chec k fo r a n ope n in th e MOTO R
circuit:1. Reinstal l th e AB S UNI T (7. 5 A )
fus e i n th e under-hoo d fuse /
rela y box .
2 . Disconnec t th e pum p moto r
connector .3. Measur e th e voltag e betwee n
termina l No . 1 an d bod y
ground .
I s ther e abou t 1 1 V ?
Chec k fo r a n ope n in th e MOTO R
GN D circuit :
Measur e th e voltag e betwee n th e
pum p moto r connecto r termina l
No. 1 an d No . 2 .
Is ther e abou t 1 1 V ?
(To pag e 19-138 )
Replac e th e pum p moto r relay .
(Pum p moto r rela y stuc k ON. )
Replac e th e fus e an d recheck .
UNDER-HOO D FUSE/RELA Y BO X7P CONNECTO R
Wire sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d th e AB S contro l unit .
PUMP MOTO R CONNECTO R
Termina l sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d th e pum p motor .
Repai r ope n in th e wir e betwee n
th e pum p moto r an d bod y
ground .Repair poo r groun d (G251) .
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DTC 54 : Fail-saf e Rela y
With th e ignitio n switc h O N
(II) , th e AB S indicato r doe s
not g o off .With th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 5 4 is indicated .
Check th e AB S (2 0 A ) fus e i n th eunder-hoo d fuse/rela y box , an d
reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Replace th e fus e an d recheck .
NOTE : I f th e fus e i s blow n afte r th e fail -
saf e rela y i s on , chec k fo r a shor t t o
bod y groun d i n th e wir e betwee n th e
fail-saf e relay , pum p moto r rela y an d
modulato r unit .
Wire color s o f fail-saf e rela y connector :BRN/BLK, WHT/GRN , BLK , YEL/GR N
Is th e rela y OK ?
Replace th e fail-saf e relay .
Chec k fo r a n ope n in th e + B cir -
cuit :
Measur e th e voltag e betwee n th efail-saf e rela y connecto r termina lNo. 2 an d bod y ground .
FAIL-SAF E RELA Y CONNECTO R
Is ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d th e fail-saf e relay . Termina
l sid e o f femal e terminal s
Chec k fo r a n ope n in th e solenoi d
powe r sourc e circuit :
1 . Connec t th e fail-saf e rela y
connecto r termina l No . 1 to
No . 2 wit h a jumpe r wire .2. Disconnec t th e modulato r uni t
connector .
3 . Measur e th e voltag e betwee n
th e modulato r uni t connecto r
terminal No . 1 0 an d bod yground . MODULATO
R UNI T CONNECTO R
I s ther e batter y voltage ?
(T o pag e 19-140 ) Repai
r ope n in th e wir e betwee n
th e fail-saf e rela y an d th e modu -
lato r unit . Termina
l sid e o f femal e terminal s
JUMPE
R WIR E
Chec
k th e fail-saf e rela y (se e
sectio n 23).
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Troubleshooting
DTC 54 : Fail-saf e Rela y (cont'd )
(From pag e 19-139 )
Chec k fo r a shor t t o powe r i n th e
solenoi d powe r sourc e circuit :
1 . Remov e th e jumpe r wir e fro m
th e fail-safe relay connector .
2 . Measur e th e voltag e betwee n
th e modulato r uni t connecto r
terminal No . 1 0 an d bod yground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o powe r i n th e
FS R circuit :1. Disconnec t th e AB S contro lunit 22 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 termina l No . 2 1 an d bod y
ground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o bod y groun d
i n th e FS R circuit :
Chec k fo r continuit y betwee n th e
AB S contro l uni t 22 P connecto rterminal No . 2 1 an d bod y ground .
I s ther e continuity ?
Chec k fo r a n ope n i n the FSR
GN D circuit :
Chec k fo r continuit y betwee n th e
fail-saf e rela y connecto r termina l
No . 3 an d bod y ground .
I s ther e continuity ?
Check fo r a n ope n in th e FS R cir -cuit :1. Connec t th e fail-saf e rela yconnecto r terminal s No . 3 an dNo. 4 wit h a jumpe r wire .
2 . Chec k fo r continuit y betwee n
th e AB S contro l uni t 22 P con -
necto r termina l No . 2 1 an d
bod y ground .
I s ther e continuity ?
I f th e proble m occur s again ,
replac e th e AB S contro l unit . Repai
r shor t t o powe r i n th e wir e
betwee n th e fail-saf e relay , mod -
ulator uni t an d th e under-hoo dfuse/relay box .
Termina l sid e o f femal e terminal s
ABS CONTRO L UNI T 22 P CONNECTO R
Repai r shor t t o powe r i n th e wir e
betwee n th e AB S contro l uni tand th e fail-saf e relay .Wire sid e o f femal e terminal s
Repair shor t t o bod y groun d in
th e wir e betwee n th e AB S con -
tro l uni t an d th e fail-saf e relay .
FAIL-SAF E RELA Y CONNECTO R
Repair ope n in th e wir e betwee n
th e fail-saf e rela y an d bod y
ground .
Termina l sid e o f femal e terminal s
AB S CONTRO L UNI T 22 P CONNECTO R
Repai r ope n i n th e wir e betwee n
th e AB S contro l uni t an d th e fail -
saf e relay .
Wire sid e o f femal e terminal s
MODULATO
R UNI T CONNECTO R
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