1996 ACURA RL KA9 Service Repair Manual

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Page 1129 of 1954

ACURA RL KA9 1996 Service Repair Manual (From pag e 19-82 )
Chec k fo r a shor t i n th e modula -
to r wir e harness :
Chec k fo r continuit y betwee n th e
modulato r uni t 14 P connecto r
terminal No . 1 4 an d th e followin gterminals

Page 1130 of 1954

ACURA RL KA9 1996 Service Repair Manual Troubleshooting
DTC 7-2 : Left-fron t Solenoi d (cont'd )
(From pag e 19-83 )
Chec k fo r a shor t i n th e FL-OU T
circuit:Check fo r continuit y betwee n th e
AB S contro l uni t 26 P connecto

Page 1131 of 1954

ACURA RL KA9 1996 Service Repair Manual (From pag e 19-84 )
FRON T FAIL-SAF E RELA Y CONNECTO R
Check fo r a n ope n in th e FS R cir -
cuit :
1 . Connec t th e fron t fail-saf e
rela y termina l No . 4 to bod y
groun d wit h a jumpe r w

Page 1132 of 1954

ACURA RL KA9 1996 Service Repair Manual Troubleshooting
DTC 7-4 : Rea r Solenoi d
During th e initia l diagnosis , afte r th e fail-saf e relay s ar e turne d on , an d durin g th e regula r diagnosis , th e AB S contro l uni t
monitor s th

Troubleshooting
DTC 7-4 : Rea r Solenoi d
During th e initia l diagnosis , afte r th e fail-saf e relay s ar e turne d on , an d durin g th e regula r diagnosis , th e AB S contro l uni t
monitor s th e voltag e fro m th e batter y fo r th e si x solenoid s (whe n th e AB S is no t functioning) . I f th e detectio n circui t fo r
the rea r solenoid s detect s 0 V , th e AB S contro l uni t keep s th e AB S indicato r ligh t o n afte r th e engin e is started . I t turn s th e
AB S indicato r ligh t o n agai n if i t detect s 0 V afte r th e ligh t goe s off .
Possibl e causes :
Rear fail-saf e rela y stuc k OF F
Ope n circui t i n th e rea r solenoi d driv e circuit s betwee n th e under-hoo d fuse/rela y bo x an d AB S contro l uni t
Shor t circui t t o bod y groun d in th e rea r solenoi d driv e circuit s betwee n th e solenoid s an d AB S contro l uni t
Fault y rea r solenoi d driv e transisto r (ON ) i n th e AB S contro l uni t
The AB S contro l uni t momentaril y output s th e O N signa l t o eac h solenoi d (to o momentar y to tur n th e solenoi d on ) durin g
the initia l diagnosis , an d eac h tim e th e vehicl e is driven , t o chec k th e voltag e fro m th e batter y wit h th e detectio n circuit . I f
th e detectio n circui t fo r th e rea r solenoid s detect s batter y voltag e a t thi s time , th e AB S contro l uni t keep s th e AB S indica -
to r ligh t on . I t turn s th e AB S indicato r ligh t o n agai n if i t detect s th e batter y voltag e whe n th e vehicl e i s driven .
Possibl e causes :
Short circui t t o powe r i n th e rea r solenoi d driv e circuit s betwee n th e solenoid s an d AB S contro l uni t
Fault y rea r solenoi d driv e transisto r (OFF ) i n th e AB S contro l uni t
Shor t circui t t o powe r i n th e rea r solenoi d driv e circuit s in th e modulato r wir e harnes s o r solenoid s
Shor t circui t t o th e rea r solenoi d outle t circui t i n th e inle t circui t betwee n th e solenoid s an d AB S contro l uni t
Shor t circui t t o th e right-fron t o r left-fron t solenoi d inle t o r outle t circui t i n th e rea r solenoi d inle t o r outle t circui t
betwee n th e solenoid s an d AB S contro l uni t
Doe s th e AB S indicato r ligh t g ooff ?
Th e syste m is O K a t thi s time .Check th e wir e harnes s an d con -nector s betwee n th e AB S contro lunit, fail-saf e rela y an d modulato runit (intermitten t ope n o r shor tcircuit) .
Is cod e 7- 4 indicated ?Perform th e appropriat e trouble -shooting fo r th e code .
(To pag e 19-87 )
Confir m th e DT C tha t appear s first .
Proble m verification :Start th e engine .
With engin e running , AB S indi -cato r ligh t i s ON .With th e SC S servic e connec -tor connecte d (se e pag e19-40 ), DT C 7- 4 is indicated .
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Page 1133 of 1954

ACURA RL KA9 1996 Service Repair Manual (From pag e 19-86 )
Chec k fo r a n ope n i n th e B 2 cir -
cuit :
1 . Remov e th e rea r fail-saf e relay .
2 . Measur e th e voltag e betwee n
termina l No . 2 an d bod yground .
REAR FAIL-SAF E R

Page 1134 of 1954

ACURA RL KA9 1996 Service Repair Manual Troubleshooting
DTC 7-4 : Rea r Solenoi d (cont'd )
(From pag e 19-87 )
Check th e solenoid :1. Measur e th e resistanc ebetween th e modulato r uni t14P connecto r terminal s t o
determin e th e

Page 1135 of 1954

ACURA RL KA9 1996 Service Repair Manual MODULATOR UNI T U P CONNECTO R
(Fro m pag e 19-88 )
Chec k fo r a shor t i n th e modula -
to r wir e harness :
Chec k fo r continuit y betwee n th e
modulato r uni t 14 P connecto rterminal No . 1

Page 1136 of 1954

ACURA RL KA9 1996 Service Repair Manual Troubleshooting
DTC 7-4 : Rea r Solenoi d (cont'd )
(From pag e 19-89 )
Chec k fo r a shor t i n th e R-I N cir -
cuit:Chec k fo r continuit y betwee n th e
AB S contro l uni t 26 P connecto r
t

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