fuse box ACURA RL KA9 1996 Service Service Manual

Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
The sca n too l indicate s Diagnosti c Troubl e Cod e (DTC ) P0453 : A hig h voltag e proble m in th e Fue l Tan k Pressur e
sensor.
The MI L ha s bee n reporte d on .
DT C P045 3 is stored .
Chec k th e vacuu m lines :
Chec k th e vacuu m line s o f th e
fuel tan k pressur e senso r fo r mis -routing , leakage , breakag e an dclogging .
Are th e vacuu m line s OK ?
YES
Proble m verification :1. D o th e PC M Rese t Procedure .2. Remov e th e fue l fil l cap .3. Tur n th e ignitio n switc h O N (II) .
4 . Monito r th e FT P sensor volt-
age wit h th e Hond a PG MTester , o r measur e voltag e
betwee n bod y groun d an d
PC M connecto r termina l D15 .
I s ther e abou t 2. 5 V ?
NO
Chec k fo r a n ope n i n th e wir e
(SG 2 line) :
1. Tur n th e ignitio n switc h OFF .2. Reinstal l th e fue l fil l cap .3. Disconnec t th e fue l tan k pres -
sur e senso r 3 P connector .
4 . Tur n th e ignitio n switc h O N (II) .
5 . Measur e voltag e betwee n th e
fue l tan k pressur e senso r 3 P
connecto r terminal s No . 1 an d
No. 2 .
Is ther e abou t 5 V ?
YE S
Chec k fo r a shor t i n th e wir e
(PTAN K line) :
Measur e voltag e betwee n th e
fue l tan k pressur e senso r 3 P con -
necto r terminal s No . 2 an d No . 3 .
(T o pag e 11-181 ) Repai
r o r replac e vacuu m line s
as necessary .
PCM CONNECTO R D (22P )
YES
Intermitten t failure , syste m is O K
a t thi s time . Chec k fo r poo r con -
nection s o r loos e wire s a t C41 7
(locate d nea r th e under-das h
fuse/rela y box) , C31 9 (C674) *
(fue l tan k pressur e sensor ) an d
PCM .
Wire sid e o f femal e terminal s
FUE L TAN K
PRESSUR E SENSO R
3 P CONNECTO R (C31 9 (C674)* )
Repai r ope n in th e wir e betwee n
th e fue l tan k pressur e senso r an d
PC M (D22) .
* : '0 0 - 0 1 model s
NO
Wir e sid e o f femal e terminal s
NO
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From pag e 14-5 8
Chec k Torqu e Converte r Clutc h
Solenoi d Valv e A fo r a Shor t
Circuit :
1 . Disconnec t th e 2 P connecto r
fro m th e torqu e converte r
clutc h solenoi d valve s A an d B .
2 . Chec k fo r continuit y betwee n
the E1 3 an d A2 6 terminals .
Is ther e continuity ?
Measur e Torqu e Converte r Clutc h
Solenoi d Valv e A Resistanc e a t
th e Solenoi d Connector :
Measur e th e resistanc e betwee n
th e No . 2 termina l o f th e torqu e
converte r clutc h solenoi d connec -
tor an d bod y ground .
Is th e resistanc e 12-2 5
Chec k th e V B SO L Voltage :
1. Tur n th e ignitio n switc h O N (II) .2. Measur e th e voltag e betwee n
th e E 1 an d A2 6 terminals .
I s ther e voltage ?
Replace th e torqu e converte rclutch solenoi d valve s A an d B . Repai
r shor t t o groun d in th e wir e
betwee n th e E1 3 termina l an d th e
torqu e converte r clutc h solenoi d
valv e A .
Chec k fo r ope n i n th e wir e
betwee n th e E1 3 termina l an d th e
torqu e converte r clutc h solenoi d
valv e A .
Chec k fo r ope n i n th e wir e
betwee n th e E 1 termina l an d th e
under-hoo d fuse/rela y box .
PCM CONNECTOR S
Wire sid e o f femal e terminal s
Termina l sid e o f
mal e terminal s
TORQUE CONVERTE R CLUTC HSOLENOI D VALVE S A AN D BCONNECTO R
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From pag e 14-6 0
Chec k Torqu e Converte r Clutc h
Solenoi d Valv e B fo r a Shor t
Circuit :
1 . Disconnec t th e 2 P connecto r
fro m th e torqu e converte r
clutc h solenoi d valve s A an d B .
2 . Chec k fo r continuit y betwee n
th e E2 6 an d A2 6 terminals .
I s ther e continuity ?
Measur e Torqu e Converte r Clutc h
Solenoi d Valv e B Resistanc e a t th e
Solenoi d Connecto r
Measur e th e resistanc e betwee n
th e No . 1 termina l o f th e torqu e
converte r clutc h solenoi d connec -
to r an d bod y ground .
Is th e resistanc e 12-2 5
Chec k th e V B SO L Voltage :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e E 1 an d A2 6 terminals .
I s ther e voltage ? PC
M CONNECTOR S
Repai r shor t t o groun d in th e wir e
betwee n th e E2 6 termina l an d th e
torqu e converte r clutc h solenoi d
valv e B .
Chec k fo r ope n i n th e wir e
betwee n th e E2 6 termina l an d th e
torqu e converte r clutc h solenoi d
valve B .
Chec k fo r ope n i n th e wir ebetwee n th e E 1 termina l an d th e
under-hoo d fuse/rela y box .
TORQU E CONVERTE R CLUTC HSOLENOI D VALVE S A AN D BCONNECTO R
Terminal sid e o f
mal e terminal s
Replac e th e torqu e converte r
clutc h solenoi d valve s A an d B .
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From pag e 14-6 8
Chec k Shif t Solenoi d Valv e A fo r
a Shor t Circuit :
1 . Remov e th e shif t cabl e cove r
fro m th e transmission .
2. Disconnec t th e shif t solenoi dvalve/A/ T clutc h pressur e con -
tro l solenoi d valv e harnes s 4- P
connector .
3. Chec k fo r continuit y betwee nthe E1 2 an d A2 6 terminals .
Is ther e continuity ?
Measur e Shif t Solenoi d Valv e A
Resistanc e a t th e Solenoi d
Connector :
Measur e th e resistanc e betwee n
the No . 2 termina l o f th e shif tsolenoi d valve/A/ T clutc h pressur e
contro l solenoi d valv e harnes s 4 P
connecto r an d bod y ground .
Is th e resistanc e 12-2 5
Chec k th e V B SO L Voltage :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e E 1 an d A2 6 terminals .
I s ther e voltage ? Repai
r shor t t o groun d in th e wir e
betwee n th e E1 2 termina l an d th e
shif t solenoi d valv e A .
Chec k fo r ope n i n th e wir e
betwee n th e E1 2 termina l an d th e
shif t solenoi d valv e A .
Chec k fo r ope n i n th e wir e
betwee n th e E 1 termina l an d th e
under-hoo d fuse/rela y box . PC
M CONNECTOR S
Wir e sid e o f femal e terminal s
SHIF T SOLENOI D
VALVE/A/ T CLUTC H PRESSUR E
CONTRO L SOLENOI D
VALV E HARNES S 4P CONNECTO R
Termina l sid e o f
mal e terminal s
PC M CONNECTOR S
Wir e sid e o f femal e terminal s
Replac e th e shif t solenoi d valve s
A an d B .
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From pag e 14-7 0
Chec k Shif t Solenoi d Valv e B fo r
a Shor t Circuit :
1 . Remov e th e shif t cabl e cove r
fro m th e transmission .
2 . Disconnec t th e shif t solenoi d
valve/A/ T clutc h pressur e con -
tro l solenoi d valv e harnes s 4 P
connector .
3 . Chec k fo r continuit y betwee n
th e E2 5 an d A2 6 terminals .
I s ther e continuity ?
Measur e Shif t Solenoi d Valv e B
Resistanc e a t th e Solenoi d
Connector :
Measur e th e resistanc e betwee n
th e No . 1 termina l o f th e shif t
solenoi d valve/A/ T clutc h pres -
sur e contro l solenoi d valv e har -
nes s 4 P connecto r an d bod y
ground .
Is th e resistanc e 12-2 5
Replac e th e shif t solenoi d valve s
A an d B .
Repai r shor t t o groun d in th e wir ebetwee n th e E2 5 termina l an d th eshif t solenoi d valv e B .
Chec k fo r ope n i n th e wir e
betwee n th e E2 5 termina l an d
th e shif t solenoi d valv e B .
Chec k fo r ope n i n th e wir e
betwee n th e E 1 termina l an d th e
under-hoo d fuse/rela y box . PC
M CONNECTOR S
SHIF T SOLENOI D
VALVE/A/ T CLUTC H PRESSUR E
CONTRO L SOLENOI D VALV E
HARNES S 4 P CONNECTO R
Termina l sid e o f
mal e terminal s
PC M CONNECTOR S
Wir e sid e o f femal e terminal s
Chec
k th e V B SO L Voltage :
1. Tur n th e ignitio n switc h O N (II) .2. Measur e th e voltag e betwee n
th e E l an d A2 6 terminals .
I s ther e voltage ?
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Electrical Troubleshootin g
Troubleshooting Flowchar t — A/ T Clutc h Pressur e Contro l Solenoi d Valv e
• OB D II Sca n Too l indicate s Cod e
P1768 .
• Self-diagnosi s indicator ligh t
indicate s Cod e 16 .
Measur e A/ T clutc h pressur e con -
tro l solenoi d valv e Resistanc e a t
Solenoi d Connector :
1 . Disconnec t th e shif t solenoi d
valve/A/ T clutc h pressur e con -
tro l solenoi d valv e harnes s 4 P
connector .
2 . Measur e th e resistanc e o f th e
A/ T clutc h pressur e contro l
solenoi d valve .
Is th e resistanc e approx . 5
Chec k A/ T Clutc h Pressur e
Control Solenoi d Valv e fo r aShor t Circuit :
1 . Disconnec t th e E (26P ) con -
necto r fro m th e PCM .
2 . Chec k fo r continuit y betwee n
body groun d an d th e E1 6 termi -nal an d E 3 termina l individually .
I s ther e continuity ?
Is th e resistanc e approx .
Chec k th e V B SO L Voltage :
1 . Disconnec t th e A (26P ) an d E
(26P ) connector s fro m th ePCM .2. Tur n th e ignitio n switc h O N (II) .3. Measur e th e voltag e betwee n
th e E 1 an d A2 6 terminals .
I s ther e voltage ?
Chec k fo r loos e PC M connectors .
I f necessary , substitut e a known -
goo d PC M an d recheck . Possibl
e Caus e
• Disconnecte d A/ T clutc h pres -
sur e contro l solenoi d valv e con -
necto r
• Shor t o r ope n i n A/ T clutc h
pressur e contro l solenoi d valv e
wir e
• Fault y A/ T clutc h pressur e con -
tro l solenoi d valv e
• Ope n V B SO L lin e
Replac e th e A/ T clutc h pressur e
contro l solenoi d valve .
Repai r shor t i n th e wire s
betwee n th e E1 6 an d E 3 termi -
nal s an d th e A/ T clutc h pressur e
contro l solenoi d valve .
Repai r loos e termina l o r ope n i n
th e wire s betwee n th e E1 6 an d E 3
terminal s an d th e A/ T clutc h pres -
sur e contro l solenoi d valve .
Chec k fo r ope n i n th e wir e
betwee n th e E 1 termina l an d th eunder-hoo d fuse/rela y box . SHIF
T SOLENOI D
VALVE/A/ T CLUTC H PRESSUR E
CONTRO L SOLENOI D VALV E
HARNES S 4 P CONNECTO R
Termina l sid e o f mal e terminal s
Wir e sid e o f femal e terminal s
Measur e A/ T Clutc h Pressur e
Contro l Solenoi d Valv e Resistance :
1. Connec t th e shif t solenoi dvalve/A/T clutc h pressur e con -
tro l solenoi d valv e harnes s 4 P
connector .
2 . Measur e th e resistanc e
between th e E1 6 an d E 3 ter -minals .
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Component Locations

ABS CONTROL UNIT

MODULATOR UNIT
SERVICE CHECK CONNECTOR (2P)

ABS INSPECTION CONNECTOR (6P)

RIGHT-REAR WHEEL SENSOR

RIGHT-FRONT WHEEL

SENSOR CONNECTOR

RIGHT-FRONT

WHEEL SENSOR
LEFT-REAR WHEEL

SENSOR CONNECTOR

LEFT-REAR

WHEEL SENSOR

RIGHT-REAR WHEEL

SENSOR CONNECTOR

UNDER-HOOD

RELAY BOX B

UNDER-HOOD

FUSE/RELAY BOX
UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR

LEFT-FRONT WHEEL

SENSOR CONNECTOR

GAUGE ASSEMBLY:

ABS INDICATOR LIGHT

UNDER-DASH FUSE/RELAY BOX:

METER

(7.5 A) FUSE
ABS B2

(15 A) FUSE

ABS B1

(20 A) FUSE

METER

(15 A) FUSE
BATTERY

(120 A) FUSE

ABS MOTOR (40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C:

REAR FAIL-SAFE RELAY

METER RELAY

FRONT FAIL-SAFE RELAY
ABS
UNIT

(7.5 A) FUSE
STOP/HORN

(ISA) FUSE
ABS PUMP

MOTOR RELAY
UNDER-HOOD FUSE/RELAY BOX:

ECU

(20 A) FUSE

R/C MIRROR

(7.5 A) FUSEProCarManuals.com

DTC Indication Pattern (When the ABS control unit detected a problem three times.):

Turn the ignition switch ON (II). The ABS indicator light comes on for 2 seconds to check the bulb.

The ABS control unit indicates the DTC 3 times.

If you miscount the blinking frequency or if you recheck the blinking frequency, turn the ignition switch OFF then

turn it ON (II) to cycle the ABS indicator light again.

4. Remove the SCS service connector.

NOTE: The Malfunction Indicator Lamp (MIL) will stay on after the engine is started if the SCS service connector is

connected.

5. Remove the ABS B2 (15 A) fuse in the under-hood fuse/relay box for at least 3 seconds to erase the ABS control unit's

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Troubleshooting
ABS Indicato r Ligh t Doe s No t Com e O n
Th e AB S indicato r ligh t doe s no t com e o n whe n th e ignitio n switc h is turne d O N
Whe n th e ignitio n switc h i s turne d O N (II) , th e AB S indicator light driv e transisto r i n th e AB S contro l uni t i s activate d b y
self-bia s an d turn s th e AB S indicato r ligh t on .
Possibl e cause s fo r a n AB S indicato r ligh t tha t doe s no t com e on :
Blow n METE R (1 5 A ) fus e o r METE R (7. 5 A ) fus e
Mete r rela y stuc k OF F
Ope n circui t betwee n th e METE R (1 5 A ) fus e an d AB S indicato r ligh t
Ope n circui t betwee n th e METE R (7. 5 A ) fus e an d bod y groun d
Blow n AB S indicato r ligh t bul b
Ope n circui t betwee n th e AB S indicato r ligh t an d AB S contro l uni t
Ope n circui t betwee n th e AB S contro l uni t an d bod y groun d
Poor bod y groun d
Fault y AB S contro l uni t
The AB S indicato r ligh t doe s no t
com e o n whe n th e ignitio n switc h
i s turne d O N (II) .
Chec k th e METE R (1 5 A ) fus e
i n th e under-hoo d fuse/rela y bo x
an d th e METE R (7. 5 A ) fus e in th e
under-das h fuse/real y box . NOTE
: I f th e brak e syste m ligh t come s on , th e
circui t betwee n th e batter y an d gaug e assem -
bly is OK .
Are th e fuse s OK ?Replac e th e fus e an d recheck .
NOTE : Reinstal l th e fuse s i f the y ar e OK . GAUG
E ASSEMBL Y 22 P CONNECTO R
Chec k fo r a n ope n in th e IG 1 cir -
cuit :
1 . Disconnec t th e gaug e assem -
bl y 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 gaug e assembl y 22 P con -
necto r termina l No . 2 2 an d
bod y ground .
I s ther e batter y voltage ? Mete
r rela y stuc k OFF .
Repai r ope n in th e wir e betwee n
th e METE R (1 5 A ) fus e i n th e
under-hoo d fuse/rela y bo x an d
gaug e assembly .
Repai r ope n in th e wir e betwee n
th e METE R (7. 5 A ) fus e i n th e
under-das h fuse/rela y bo x 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
th e fuse/rela y box ) Wir
e sid e o f femal e terminal s
Is th e bul b OK ?Replac e th e AB S indicato r ligh t
bulb .
(T o pag e 19-44 )
Chec
k th e AB S indicato r ligh t bul b
i n th e gaug e assembly .
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ABS Indicato r Ligh t Doe s No t G o Of f (N o DTC )
The AB S indicato r ligh t doe s no t g o of f afte r th e engine is starte d
Whe n n o proble m is foun d durin g th e initia l diagnosis , th e AB S contro l uni t turn s th e AB S indicato r ligh t driv e transisto r
of f t o tur n th e AB S indicato r ligh t off .
Possibl e cause s fo r a n AB S indicato r ligh t tha t doe s no t g o off , bu t n o Diagnosti c Troubl e Cod e (DTC ) i s indicated :
Blow n R/ C MIRRO R (7. 5 A ) fus e
Ope n circui t betwee n th e under-das h fuse/rela y bo x an d AB S contro l uni t
Ope n circui t betwee n th e batter y an d under-hoo d fuse/rela y bo x
Blow n AB S B 2 (1 5 A ) fus e
Ope n circui t insid e th e under-hoo d fuse/rela y bo x
Ope n circui t betwee n th e under-hoo d fuse/rela y bo x an d AB S contro l uni t
Fault y alternato r
Ope n circui t betwee n th e alternato r an d AB S contro l uni t
Shor t t o bod y groun d in th e WAR N circui t betwee n th e AB S indicator light an d AB S contro l uni t
Fault y AB S contro l uni t
Wit h engin e running , AB Sindicato r ligh t i s ON .With th e SC S servic e connec -
to r connecte d (se e pag e 19-40 ),
n o DT C is indicated .
Chec k th e chargin g system :
Star t th e engin e an d chec k th e
chargin g syste m indicato r light .
Does i t g o off ?
Chec k th e IG 2 powe r sourc e fuse :
1. Tur n th e ignitio n switc h OFF .2. Chec k th e R/ C MIRRO R (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 th e AB S B 2 (1 5 A ) fus e i n
th e under-hoo d fuse/rela y box .
I s th e fus e OK ?
(T o pag e 19-46 ) Chec
k th e chargin g syste m (se e
sectio n 4) .
Replac e th e fus e an d recheck . UNDER-HOO
D FUSE/RELA Y BO X
NOTE : Reinstal l th e fus e i f i t i s OK .
Replac e th e fus e an d recheck .
NOTE : Reinstal l th e fus e i f i t i s OK .
ABS B 2 (1 5 A ) FUS E
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