1996 ACURA RL KA9 Service Repair Manual

(From pag e 19-50 )
Remov e th e AB S pum p moto rrelay an d chec k it (se e sectio n 23 ).
I s th e rela y OK ?
Chec k th e AB S pum p moto r oper -
ation :
1 . Reliev e syste m pressur e (se e
pag e 19-97) .
2 . Connec t th e AB S pum p rela y
connecto r + B an d MOTO R ter -
minal s wit h a jumpe r wire for1 second .
Doe s th e pum p moto r run ?
Chec k th e MC K (moto r check ) cir -
cuit :
1 . Remov e th e jumpe r wire .
2. Disconnec t th e under-hoo dfuse/relay bo x 3 P connector .3. Tur n th e ignitio n switc h O N (II) .4. Measur e th e voltag e betwee nthe AB S pum p moto r rela yconnecto r moto r termina l an dbody ground .
Is ther e abou t 10V ?
(T o pag e 19-52 ) Replac
e th e AB S pum p moto r
relay .
NOTE : I f th e rela y i s stuc k ON , th e moto r ma y
b e damaged . Chec k th e pum p moto r opera -
tion.
UNDER-HOO D FUSE/RELA Y BO X
JUMPE R WIR E
NOTE : Us e a jumpe r wir e wit h a diamete r
large r tha n 2 m m (0.0 8 in) .
(T o pag e 19-53 )
T o chec k fo r a n ope n i n th e pum p
motor driv e circui t
ABS PUM P MOTO R RELA Y CONNECTO R
(T o pag e 19-54 )
T o chec k fo r a n ope n in th e MC K
circui t MOTO
R TERMINA L
AB S PUM P MOTO R RELA Y CONNECTO R
+
B TERMINA L
MOTO
R TERMINA L
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Troubleshooting
DTC 1-2 : Pum p Moto r (cont'd )
(From pag e 19-51 )
Chec k fo r a n ope n in th e IG 2 cir -
cuit :
Measur e th e voltag e betwee n th e
under-hoo d fuse/rela y bo x 5 P
connecto r termina l No . 2 an dbody ground .
Is ther e batter y voltage ?
Chec k th e AB S pum p moto r rela y
operation :
1 . Connec t th e under-hoo d fuse /
rela y bo x 3 P connector.
2 . Instal l th e AB S pum p moto r
relay .
Doe s th e AB S pum p moto r
rela y operate ?
Chec k fo r a n ope n i n th e under -
hoo d fuse/rela y box :
Measur e th e voltag e betwee n th e
under-hoo d fuse/rela y bo x 5 P
connecto r termina l No . 1 an d
bod y ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e PM R cir -
cuit :
Measur e th e voltag e betwee n th e
AB S contro l uni t 22 P connecto r
termina l No . 2 1 an d bod y ground .
I s ther e batter y voltage ?
Reconnec t th e connector s prop -
erly , reliev e syste m pressur e an d
star t th e engine . I f DT C 1- 2 i s
store d again , replac e th e AB S
contro l unit . NOTE
: Th e AB S pum p moto r rela y coi l circui t
i s checke d beginnin g wit h thi s step .
UNDER-HOO D FUSE/RELA Y BO X5P CONNECTO R
Repair ope n in th e wir e betwee n
th e R/ C MIRRO R (7. 5 A ) fus e in th e
under-das h fuse/rela y bo x an d th e
under-hoo d fuse/rela y box . Wir
e sid e o f femal e terminal s
(T o pag e 19-55 )
T o chec k fo r a shor t t o bod y groun d
i n th e AB S pum p moto r rela y coi l cir -
cuit
NOTE : Th e AB S pum p moto r rela y coi l circui t
i s checke d fo r a n ope n beginnin g wit h thi s
step .
UNDER-HOO D FUSE/RELA Y BO X
5 P CONNECTO R
Replace th e under-hoo d fuse /
rela y box .
(Ope n circui t insid e th e box ) Wir
e sid e o f femal e terminal s
AB S CONTRO L UNI T 22 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d AB S contro l unit .
NOTE : Ad d brak e flui d i f th e flui d leve l i s
lowe r tha n th e MI N line . Wir
e sid e o f femal e terminal s
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(From pag e 19-51 )
Chec k fo r a n ope n i n th e under -
hoo d fuse/rela y box :
1 . Connec t th e AB S pum p moto r
rela y connecto r + B an d MOTO R
terminal s wit h a jumpe r wire .2. Measur e th e voltag e betwee n
th e under-hoo d fuse/rela y bo x
3 P connecto r termina l No . 1
an d bod y ground . NOTE
: Th e AB S pum p moto r driv e circui t i s
checke d beginnin g wit h thi s step . UNDER-HOO
D FUSE/RELA Y BO X
3 P CONNECTO R
I s ther e batter y voltage ? Replac
e th e unde r hoo d fuse /
rela y box .
Wire sid e o f femal e terminal s
AB S PUM P MOTO R 2 P CONNECTO R
I s ther e batter y voltage ?
Repair ope n in th e wir e betwee nthe under-hoo d fuse/rela y bo x
an d AB S pum p motor .
Wire sid e o f femal e terminal s
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
AB S pum p moto r 2 P connecto r
terminal s No . 1 an d No . 2 .
I s ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e AB S pum p moto r an d bod y
ground .Repair poo r groun d (G251 )
Replac e th e AB S pum p motor .
Chec
k fo r a n ope n in th e MOTO R
+ B circuit :
1. Disconnec t th e AB S pum pmotor 2 P connector .
2 . Measur e th e voltag e betwee n
th e termina l No . 1 an d bod y
ground .
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