ACURA RL KA9 1996 Service Repair Manual

ABS Functio n Tes t
NOTE : Th e AB S syste m ca n b e checke d wit h th e AL B
checke r o r wit h th e Hond a PG M Tester .
1 . Rais e th e vehicl e of f th e ground , an d suppor t i t wit h
safet y stands .
2 . Chec k tha t ther e is n o brak e drag .
3 . Tur n th e ignitio n switc h O N (II) , an d confir m tha t th e
AB S indicato r ligh t come s on .
I f th e AB S indicato r ligh t doe s no t com e on , follo w
th e troubleshootin g o n pag e 19-43 .
4.Hond a PG M Tester : Connec t th e PG M Teste r a s
describe d i n th e PG M Teste r Anti-Loc k Brak e
Syste m (ABS ) Vehicl e Syste m Supplement . Follo w
th e tester' s prompt s instea d o f step s 5 throug h 1 1
o f thi s procedure .
AL B Checker : Wit h th e ignitio n switc h OFF , discon -
nec t th e AB S inspectio n connecto r (6P ) fro m th e
connecto r cove r locate d unde r th e glov e box , an d
connec t i t t o th e AL B checker . Continu e wit h step s 5
throug h 1 1 o f thi s procedure .
ALB CHECKE R07HAJ-SG0010 B
ABS INSPECTIO N
CONNECTO R (6P )
5. Shif t th e transmissio n t o position .
6 . Star t th e engin e an d releas e th e parkin g brake . 7
. Tur n th e Mod e Selecto r switc h t o "1" .
Monito r Light s
Powe r O N Star t Tes t Mod e Selecto r
8. Pus h th e Star t Tes t switch . Th e AB S indicato r ligh t
shoul d no t com e o n whil e th e Tes t i n Progres s ligh t
is on .
If th e AB S indicato r ligh t come s on , confir m th e DT C
an d perfor m th e appropriat e troubleshootin g fo r th e
code .
NOTE : D o no t tur n th e Mod e Selecto r switc h whe n
th e Tes t i n Progres s ligh t i s on . Damag e t o th e AL B
checke r ca n result .
9 . Tur n th e Mod e Selecto r switc h t o "2" .
10 . Depres s th e brak e peda l firmly , an d pus h th e Star t
Tes t switch . Th e AB S indicato r ligh t shoul d no t com e
o n whil e th e Tes t i n Progres s ligh t i s on . Ther e
shoul d b e kickbac k o n th e brak e pedal .
Hav e th e assistan t chec k tha t th e whee l controlle d b y
th e AB S ca n b e rotate d b y han d whe n ther e is kick -
bac k o n th e brak e pedal .
• I f th e AB S indicato r ligh t come s on , confir m th e
DT C an d perfor m th e appropriat e troubleshoot -
in g fo r th e code .
• I f th e AB S indicato r ligh t doe s no t com e o n an d
th e whee l controlle d b y th e AB S canno t b e rotat -
ed , chec k th e connectio n o f th e modulato r wir e
harnes s connectors . I f th e connection s ar e OK ,
replac e th e modulator unit.
NOTE : Th e kickbac k shoul d occu r approximatel y 2 0
second s afte r th e Star t Tes t switc h is pushed .
11 . Tur n th e Mod e Selecto r switc h t o "3" , "4 " an d "5" .
Perfor m ste p 1 0 fo r eac h o f th e tes t mod e positions .
ProCarManuals.com

ABS Functio n Tes t (cont'd )
Operatio n Sequenc e Simulate d b y Mode s o f AL B Checke r
NOTE : Th e whee l sensor s an d senso r wir e harnesse s ar e no t checke d b y th e AL B checker .
Mode 1 : Send s th e simulate d drivin g signa l 0 mp h ( 0 km/h ) 11 3 mp h (18 0 km/h ) 0 mph ( 0 km/h ) o f eac h whee l t o th e
AB S contro l uni t t o chec k th e syste m unde r th e norma l driving . Ther e shoul d b e n o kickback .
SIMULATE D DRIVIN G SIGNA L
Mode 2 : Send s th e drivin g signa l o f eac h wheel , the n send s th e loc k signa l o f th e left-rea r whee l t o th e AB S contro l uni t t o
chec k th e syste m unde r left-rea r whee l lock . Ther e shoul d b e kickback .
SIMULATE D DRIVIN G SIGNA L
Mode 3 : Send s th e drivin g signa l o f eac h wheel , the n send s th e loc k signa l o f th e right-rea r whee l t o th e AB S contro l uni t
t o chec k th e syste m unde r right-rea r whee l lock . Ther e shoul d b e kickback .
SIMULATE D DRIVIN G SIGNA L
Inspectio n Point s
I f th e AB S indicato r ligh t come s o n an d th e syste m stop s durin g th e inspection , confir m th e DT C an d perfor m th e appro -
priat e troubleshootin g fo r th e code .
I f ther e is n o kickbac k i n mode s 2 throug h 5 , an d th e AB S indicato r ligh t doe s no t com e on , th e followin g item s ar e proba -
bl e causes :
Pressur e switc h stuc k O N
Clogge d o r stuc k solenoi d outle t valv e
Modulato r wir e harnes s connector s improperl y connecte d
Mod
e 5 : Send s th e drivin g signa l o f eac h wheel , the n send s th e loc k signa l o f th e right-fron t whee l t o th e AB S contro l uni t
t o chec k th e syste m unde r right-fron t whee l lock . Ther e shoul d b e kickback .
SIMULATE D DRIVIN G SIGNA L
Mode 4 : Send s th e drivin g signa l o f eac h wheel , the n send s th e loc k signa l o f th e left-fron t whee l t o th e AB S contro l uni t
t o chec k th e syste m unde r left-fron t whee l lock . Ther e shoul d b e kickback .
SIMULATE D DRIVIN G SIGNA L
ProCarManuals.com

Modulator Uni t
Relievin g Syste m Pressur e
CAUTION :
B e sur e to reliev e syste m pressur e completel y befor e
performin g th e modulato r functio n check , disposin g
th e modulato r unit , o r replacin g th e accumulato r an d
AB S pum p moto r replacement .
D o no t spil l brak e flui d o n th e vehicle ; i t ma y damag e
th e paint ; i f brak e flui d doe s contac t th e paint , was h
i t of f immediatel y wit h water .
D o no t reus e th e draine d brak e fluid .
D o no t loose n th e relie f plu g o n th e accumulator .
1 . Remov e th e bleede r ca p fro m th e maintenanc e
bleeder o n th e modulato r unit .
MAINTENANC E BLEEDE R11 N- m (1. 1 kgf-m , 8 Ibf-ft )
CAPTUB E
2. Attac h a wrenc h t o th e maintenanc e bleeder .
3 . Connec t a tub e o f th e appropriat e diamete r t o th e
maintenanc e bleeder , an d se t th e othe r en d o f th e
rubbe r tub e i n a suitabl e container .
4 . Whil e holdin g th e tub e wit h you r hand , slowl y loose n
the maintenanc e bleede r 1/ 8 to 1/ 4 tur n to collec t th e
brak e flui d in th e container .
CAUTION : D o no t loose n th e maintenanc e bleede r
to o much . Th e high-pressur e brak e flui d ca n burs t out .
5 . Tighte n th e maintenanc e bleede r t o th e specifie d
torque .
ProCarManuals.com

Modulator Uni t
High-Pressur e Brak e Flui d Replacement/Bleedin g
Replacement
1. Reliev e syste m pressur e (se e pag e 19-97 ). Leav e th e
tub e an d wrenc h o n th e maintenanc e bleeder , an d
leav e th e tub e in th e container .
2 . Star t th e engin e t o operat e th e pum p motor .
NOTE:
If th e pum p moto r operate s fo r 4 0 second s o r
more , th e AB S indicato r ligh t come s on , an d th e
pum p moto r stops . Sto p an d restar t th e engin e t o
operat e th e pum p moto r again .
I f th e AB S indicator light come s on , remov e th e
AB S B 2 (1 5 A ) fus e fo r 3 second s o r mor e t o
eras e th e DT C afte r servicing .
3 . Repea t step s 1 an d 2 to drai n th e res t o f th e brak e
fluid fro m th e modulato r unit .
NOTE : Th e modulato r ha s a capacit y o f approxi -
mately 15 0 (5. 0 fl-oz , 5. 3 Imp-oz) . Approximatel y
35 - 4 5 (1. 2 - 1. 5 fl-oz , 1. 2 - 1. 6 Imp-oz ) o f th e flui d
i s draine d eac h tim e yo u reliev e syste m pressure .
4 . Remov e th e cap , an d refil l th e reservoi r t o th e MA X
(upper ) leve l wit h fres h brak e fluid .
NOTE : Pou r th e brak e flui d slowl y s o tha t i t doe s
not foam , an d wai t fo r a fe w minutes .
5. Repea t step s 1 an d 2 twice , an d refil l th e reservoi r
t o th e MA X (upper ) leve l wit h fres h brak e fluid .
6 . Tighte n th e maintenanc e bleede r t o th e specifie d
torque .
7 . Star t th e engine , an d mak e sur e tha t th e AB S indica -
tor ligh t goe s off .
Bleedin g
Whe n th e brak e flui d i s completel y draine d fro m th e
reservoi r (ai r enter s th e modulato r unit) , blee d th e ai r
from th e modulato r a s follows :
1 . Fil l th e reservoi r t o th e MA X (upper ) leve l wit h fres h
brake fluid .
2. Connec t a tub e t o th e maintenanc e bleede r o n th e
modulato r unit , an d se t th e othe r en d o f th e tub e in a
suitabl e containe r (se e pag e 19-97 ).
3 . Loose n th e bleeder , an d star t th e engin e t o operat e
th e pum p motor .
4 . Tighte n th e bleede r whe n th e flui d start s t o flo w ou t
o f th e bleeder .
NOTE : Tak e car e no t t o spil l th e brak e flui d fro m
th e container .
5 . Sto p th e engin e afte r th e pum p moto r stops .
NOTE : I f th e AB S indicato r ligh t come s o n an d th e
pum p moto r stops , restar t th e engin e an d repea t step s
3 throug h 5 above .
19-98ProCarManuals.com

Modulator Functio n Chec kRemova l
NOTE: Thi s inspectio n determine s whethe r th e basi c
brak e syste m continue s t o operat e normall y whe n th e
modulato r uni t high-pressur e sid e i s low .
1 . Reliev e syste m pressur e (se e pag e 19-97 ).
NOTE : Afte r relieving , tighte n th e bleede r t o 1 1 N- m
(1. 1 kgf-m , 8 Ibf-ft) .
BLEEDE R
2. Rais e th e vehicl e of f th e ground .
3. Hav e a n assistan t depres s th e brak e peda l firmly , an d
chec k tha t th e wheel s d o no t rotate . I f th e wheel s
rotate , replac e th e modulato r unit .
4 . Star t th e engin e t o operat e th e pum p motor , the n
ad d brak e flui d a s needed .
NOTE :
I f th e reservoi r empties , blee d th e high-pressur e
brak e fluid .
I f th e pum p moto r operate s fo r 4 0 second s o r
more , th e indicato r ligh t come s on , an d th e
pum p moto r stops . Sto p an d restar t th e engin e
t o operat e th e pum p moto r again .
I f th e AB S indicato r ligh t come s on , remov e th e
AB S B 2 (1 5 A ) fus e fo r 3 second s o r mor e t o
eras e th e DT C afte r servicing .
5 . Afte r th e pum p moto r stops , refil l th e reservoi r t o
th e MA X line .
6. Afte r servicing , mak e sur e th e AB S indicato r ligh t
goe s off . 1
. Disconnec t th e 14 P an d 2 P connectors .
2 . Disconnec t th e si x brak e lines , the n remov e th e
modulato r unit .
From
left-fron tFro
m
right-rea r
2 P CONNECTO R Fro
m
left-rea r
Fromright-fron t
RUBBERMOUNT
14P CONNECTO R
Frommaste r cylinde r
rea r sid e
BRACKE T
8 m m NU T21 N- m (2. 1 kgf- m
1 5 Ibf-ft )
Fro m
maste r cylinde r
fron t sid e
8 m m BOL T
2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
ProCarManuals.com

Modulator Uni t
Installatio n
NOTE: Thi s procedur e is fo r modulato r uni t replacement .
1. Fil l th e modulato r reservoi r t o th e MA X line .
2. Blee d ai r fro m th e suctio n por t i n th e modulato r
unit b y leanin g th e modulato r uni t t o on e sid e slow -
ly (abou t 4 5 degrees ) a s shown .
CAUTION : Afte r bleedin g air , d o no t tur n th e mod -
ulato r uni t upside-dow n o r lea n it excessively .
SUCTION POR T
Abou t 4 5 degree s
3. Instal l th e modulato r uni t i n th e revers e orde r o f
removal .
NOTE : Chec k th e letter s stampe d o n th e modulato r
body , an d connec t th e brak e line s properly . Tighte n
th e flar e nut s t o 1 9 N- m (1. 9 kgf-m , 1 4 Ibf-ft) .
4 . Star t th e engin e to operat e th e pum p motor , the n ad d
brak e flui d a s needed .
NOTE:
If th e pum p moto r operate s fo r 4 0 second s o r
more , th e indicato r ligh t come s on , an d th e pum p
moto r stops . Blee d th e high-pressur e brak e fluid ,
the n remov e th e AB S B 2 (1 5 A ) fus e fo r 3 second s
o r mor e to eras e th e DTC .
If modulato r removal/installatio n i s fo r som e
other reaso n tha n repairin g o r replacin g th e
modulator , th e pum p moto r ma y no t operate . I n
thi s case , ste p 4 an d 5 ar e no t necessary .
5 . Afte r th e pum p moto r stops , refil l th e reservoi r t o
th e MA X line .
6. Mak e sur e th e AB S indicato r ligh t goe s off .
7. Blee d th e conventiona l brak e syste m (se e pag e 19-8 ).
8 . Perfor m AB S functio n tes t (se e pag e 19-95 ).
Wir e Harnes s Replacemen t
1. Remov e th e modulato r uni t (se e pag e 19-99 ).
2 . Remov e th e cover , the n remov e th e wir e harness .
MODULATO R UNI T
SOLENOI D CONNECTO R
SET PLAT E
COVER
WIRE HARNES S
3. Chec k th e number s stampe d o n th e se t plate , an d
connec t eac h connecto r o f th e ne w wir e harnes s t o
th e se t plat e wit h th e correspondin g number .
CAUTION : Thi s ste p is important . Afte r connecting ,
rechec k th e wir e harnes s installation .
CONNECTO R NUMBER
S(Stamped)
SET PLAT E
4. Instal l th e cover .
5 . Perfor m modulato r uni t installation .
ProCarManuals.com

Pump Moto r Replacemen t
The modulato r uni t contain s high-pressur e
brak e fluid . B e sur e t o reliev e syste m pressur e uni t
befor e removin g th e pum p motor .
1 . Reliev e syste m pressur e (se e pag e 19-97 ).
2 . Remov e th e modulato r uni t (se e pag e 19-99 ).
3 . Replac e th e pum p motor .
MODULATO R UNI T
O-RIN G
Replace .
PUMP MOTO R
8 m m FLANG E BOL T
Replace .
NOTE: Us e 8 m m bolt sin th e pum p moto r set .15 N- m (1. 5 kgf-m , 1 1 Ibf-ft )
4. Perfor m modulato r uni t installatio n (se e pag e 19-100 ).
Reservoi r Replacemen t
1. Remov e th e modulato r uni t (se e pag e 19-99 ).
2 . Replac e th e reservoir .
O-RINGReplace .RESERVOI RReplace.
O-RIN G
Replac e
O-RING
Replace .
JOINTReplace .
3. Perfor m modulato r uni t installatio n (se e pag e 19-100 ).
ProCarManuals.com

Modulator Uni tABS Contro l Uni t
Accumulato r Replacemen t an d
Disposa l
• Th e modulato r uni t contain s high-pressur e brak e fluid .
B e sur e t o reliev e syste m pressur e befor e removin g
th e accumulator .
• Th e accumulato r contain s high-pressur e nitroge n
gas . D o no t puncture , expos e to flame , weld , dro p o r
appl y impac t t o th e accumulator . Th e modulato r uni t
ma y explod e an d sever e persona l injur y ma y result .
1 . Reliev e syste m pressur e (se e pag e 19-97 ).
2 . Remov e th e modulato r uni t (se e pag e 19-99 ).
3 . Remov e th e relie f plu g slowly .
NOTE: Whe n yo u loosenin g th e relie f plu g abou t
one turn , yo u wil l hea r th e ga s escaping .
4 . Replac e th e accumulator .
MODULATOR UNI TRELIE F PLU G
Removal/Installatio n
1. Remov e th e glov e box .
2 . Remov e th e glov e bo x bac k cover .
3. Remov e th e righ t fron t doo r trim .
4. Remov e th e righ t kic k panel .
5. Tur n u p th e floo r mat .
6. Remov e th e PC M cover .
7 . Remov e th e connector s insid e o f th e righ t kic k panel .
8 . Remov e th e harnes s cli p A fro m th e AB S contro l
unit , the n remov e th e bol t a t lowe r sid e o f th e AB S
contro l unit .
9 . Remov e th e multiple x contro l uni t (passenger's) .
10 . Remov e th e harnes s cli p B an d C .
11 . Remov e th e bol t a t th e rea r o f th e AB S contro l unit ,
then pul l ou t th e AB S contro l unit .
NOTE : Chec k th e AB S contro l uni t afte r connectin g
th e connector s a t insid e o f th e righ t kic k panel .
CONNECTOR S
(Insid e th e
righ t kic k panel. )
HARNES S
CLI P A
MULTIPLE X CONTRO L HARNES S CLI P C
UNI T (PASSENGER'S )
12. Instal l th e AB S contro l uni t i n th e revers e orde r o f
removal .
13. Afte r installation , perfor m AB S functio n tes t (se e
pag e 19-95 ).
5
. Perfor m modulato r uni t installatio n (se e pag e 19-100 ).
9. 8 N- m (1. 0 kgf-m , 7 Ibf-ft ) ACCUMULATO
R
Replace.
ABS CONTRO L UNI T
HARNES S CLI P B
ProCarManuals.com

Pulsers/Wheel Senso r
Inspectio n
Inspection points :
Resistanc e
Front: 700-1,10 0
Rear: 1,400-2,00 0
Ope n in th e wire s
Shor t t o bod y groun d i n th e wire s
Shor t th e wir e t o othe r on e
Installatio n
Chippe d pulse r
Air gap : 0.4 - 1. 0 m m (0.0 2 - 0.04 in)
Fron t
Rear
Remov e th e rea r brak e dis c t o inspec t th e rea r whee l
sensor ai r grip .
Whee l Senso r Replacemen t
NOTE:
B e carefu l whe n installin g th e sensor s t o avoi d twist -
in g th e wires .
Th e torqu e valu e o f th e bolt s i s a t 9. 8 N- m (1. 0 kgf-m ,
7 Ibf-ft) .
Front
FRON T WHEE L SENSO R
Rear
REA R WHEE L SENSO R
ProCarManuals.com

Special Tool s
Ref. No .Too l Numbe r DescriptionQtyPag e Referenc e
07PAZ-001010 0 SC S Servic e Connecto r 19-11 9
ProCarManuals.com