ACURA RL KA9 1996 Service Repair Manual

'00 - 0 1 models :
Troubleshootin g Flowchar t
Is th e prope r fue l fil l ca p installe dand properl y tightened ? Replac
e o r tighte n th e cap .
YES
Chec k th e fue l fil l ca p seal :
Chec k th e fue l fil l ca p seal .
Replace th e fue l fil l ca p (gra y col -
ored cap) .
NO
Is th e fue l fille r pip e damaged ?
Replace th e fue l fille r pipe .
NO
Fue l fil l ca p is OK . D o th e EVA Pcaniste r purg e valv e tes t (se epage 11-188 ).
YE S
YES
NO
Is th e fue l fil l ca p sea l missin g o rdamaged ?
Check th e fue l fil l cap :Chec k the fue l fill ca p (th e capmus t b e a Hond a ca p an d b e
tightene d a t leas t thre e "clicks " t o
properl y sea l th e system) .
Th
e MI L ha s bee n reporte d on .
DT C P145 6 is stored .
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
Dose th e valv e hol d vacuum ?
NO
Chec k th e EVA P caniste r purg evalve:1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e EVA P caniste r
purg e valv e 2 P connector .
3 . Chec k fo r continuit y betwee n
th e EVA P caniste r purg e valv e
2 P connecto r termina l No . 1
an d bod y ground .
Is ther e continuity ?
YES
Chec k fo r a shor t i n th e wir e (PC S
line) :
1 . Disconnec t th e PC M connecto r
A (26P) .2. Chec k fo r continuit y betwee n
th e EVA P caniste r purg e valv e
2 P connecto r termina l No . 1
an d bod y ground .
I s ther e continuity ?
NO
Substitut e a known-goo d PC M
an d rechec k (se e pag e 11-42 fo r
immobilize r information) . I f
symptom/indicatio n goe s away ,
replac e th e origina l PCM . EVA
P caniste r purg e valv e is OK .
D o the EVA P bypas s solenoi d
valv e tes t (se e pag e 11-189 ).
Replac e th e EVA P caniste r purg e
valve .
EVAP CANISTE R PURG EVALVE 2P CONNECTO R (C127 )
Repai r shor t i n th e wir e betwee n
PC M (A23 ) an d EVA P caniste r
purg e valve .
YES
NO
Wir e sid e o ffemal eterminal s
YES
Chec k th e EVA P caniste r purg evalve:1. Disconnec t th e vacuu m hos e
fro m th e EVA P caniste r purg e
valve , an d connec t a hos e an d
a vacuu m pum p t o th e EVA P
caniste r purg e valve .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Appl y vacuu m to th e hose .
EVA
P caniste r purg e valv e test .
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EVAP bypas s solenoi d valv e test .
Chec k th e EVA P bypas s solenoi d
valve:1. Disconnec t th e vacuu m hos e
fro m th e EVA P two-wa y
valve , an d connec t a vacuu m
pum p t o th e hose .
2 . Connec t th e PC M connecto r
termina l F 1 t o th e bod y
groun d wit h a jumpe r wire .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Appl y vacuu m to th e hose .
Dos e th e valv e hol d vacuum ?
I s ther e batter y voltage ?
EVAP TWO-WA YVALVEPCM CONNECTO R F (8P )
EVA PBYPAS SSOLENOI DVALVE
Wire sid e o ffemal eterminal s
EVA P bypas s solenoi d valve /
EVA P two-wa y valv e i s OK . D o
th e EVA P caniste r ven t shu t
valv e tes t (se e pag e 11-190 ).
EVA P BYPAS S SOLENOI DVALVE 2P CONNECTO R (C675 )
NORepai r ope n in th e wir e betwee n
th e EVA P bypas s solenoi d valv e
and PC M (F1) .
Replac e th e EVA P bypas s solenoi d
valv e an d O-rings .
O-RINGReplace .
YES
NO
YE S
Is ther e continuity ?
Chec k fo r a n ope n in th e wir e (IG 1
line) :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e voltag e betwee n th e
EVA P bypas s solenoi d valv e
2 P connecto r termina l No . 1
an d bod y ground . Wir
e sid e o f
femal e
terminal s
NO
YE S
Chec k fo r a n ope n i n th e wir e
(2WB S line) :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e EVA P bypas s
solenoi d valv e 2 P connector .
3 . Chec k fo r continuit y betwee n
th e EVA P bypas s solenoi d
valv e 2 P connecto r termina l
No . 2 an d bod y ground .
JUMPERWIREVACUU M
PUMP /
GAUGE ,0 - 3 0 in.H gA973 X -04 1 -XXXX X
Repair ope n in th e wir e betwee n
th e EVA P bypas s solenoi d valv e
and No . 2 0 EC U (PCM ) (20 A) .
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
EVAP caniste r ven t shu t valv e
test .
Chec k th e EVA P caniste r ven t shu t
valve :1. Disconnec t th e vacuu m hos e
an d connec t a vacuu m pum p
to th e hose .2. Tur n th e ignitio n switc h O N (II) .
3 . Appl y vacuu m to th e hose .
Dos e th e valv e hol d vacuum ?
YES
Chec k th e EVA P caniste r ven t shu t
valve :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e EVA P caniste r
ven t shu t valv e 2 P connector .
3 . Chec k fo r continuit y betwee n
th e EVA P caniste r ven t shu t
valv e 2 P connecto r termina l
No . 2 an d bod y ground .
I s ther e continuity ?
YES
Chec k fo r a n shor t i n th e wir e
(VS V line) :
1 . Disconnec t th e PC M connec -
tor F (8P).2. Chec k fo r continuit y betwee n
th e EVA P caniste r ven t shu t
valv e 2 P connecto r termina l
No . 2 an d bod y ground .
EVAPCANISTE R
EVAP caniste r ven t shu t valv e is
OK . D o th e vacuu m hose s an d
connection s tes t (se e pag e
11-191 ).
VACUU M
PUMP/GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 - XXXX X
EVAP CONTRO LVENT SHU TVALV E 2 P CONNECTO R (C673 )
Wire sid e o f femal e terminal s
Replac e th e EVA P caniste r ven t
shu t valv e an d O-ring .
I s ther e continuity ? Repai
r shor t i n th e wir e betwee n
PC M (F5 ) an d EVA P caniste r ven t
shu t valve .
NO
Substitut e a known-goo d PC M
an d rechec k (se e pag e 11-42 fo r
immobilize r information) . I f
symptom/indicatio n goe s away ,
replac e th e origina l PCM .
YES
NO
N
O
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Are th e part s OK ?
Repair o r replac e th e parts .
YES
Substitut e a known-goo d PC M
an d rechec k (se e pag e 11-42 fo r
immobilize r information) . I f
symptom/indicatio n goe s away ,
replac e th e origina l PCM .
NO
Chec k th e vacuu m hose s an d con -
nections :
Chec k followin g part s fo r leakag e
t o atmospher e (se e pag e 11-175 ).
• Fue l tan k
• Fue l fil l ca p
• Fue l fil l pip e
• Fue l tan k vapo r contro l valv e
• Fue l tan k vapo r recirculatio n
valve• Fue l tan k vapo r recirculatio ntube• Fue l tank vapo r signa l tub e• Fue l tan k vapo r ven t tub e• EVA P tw o wa y valv e
• Fue l tank pressur e senso r
Vacuu
m hose s an d connection s
test .
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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 ) P1457 : Evaporativ e Emissio n (EVAP ) contro l syste m lea k
detecte d (EVA P contro l caniste r system) .
'9 6 - 9 9 models :
Troubleshootin g Flowchar t
The MI L ha s bee n reporte d on .
DT C P145 7 is stored .
D o th e fue l tan k pressur e senso r
tes t (se e pag e 11-132 ).
I s th e fue l tan k pressur e senso r OK ?
Fue l tan k pressur e senso r i s OK .
D o th e EVA P purg e contro l
solenoi d valve .
EVA P purg e contro l solenoi d
valv e test .
Chec k th e EVA P purg e contro l
solenoid valve :1. Disconnec t th e vacuu m hos e
fro m th e EVA P purg e contro l
solenoi d valve , an d connec t a
hos e an d a vacuu m pum p t o
th e EVA P purs e contro l
solenoi d valve .
2 . Connec t th e PC M connecto r
termina l A2 3 t o th e bod y
groun d wit h a jumpe r wire .3. Tur n th e ignitio n switc h O N (II) .
4 . Appl y vacuu m to th e hose .
Dos e th e valv e hol d vacuum ?
Chec k fo r a n ope n i n the wire
(PCS line) :1. Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e EVA P purg e
contro l solenoi d valv e 2 P con -
nector .
3 . Chec k fo r continuit y betwee n
th e EVA P purg e contro l
solenoi d valv e 2 P connecto r ter -
mina l No . 1 an d bod y ground .
I s ther e continuity ?
YES
Chec k fo r a n ope n i n th e wir e
(IG 1 line) :
1. Tur n th e ignitio n switc h O N (II) .2. Measur e voltag e betwee n th e
EVA P bypas s solenoi d valv e 2 P
connecto r termina l No . 2 an d
bod y ground . Replac
e th e fue l tan k pressur e
sensor.
PCM CONNECTO R A (26P )
Wir e sid e o f
femal eterminal s
EVA P purg e contro l solenoi d
valve i s OK . D o th e EVA P bypas ssolenoi d valv e tes t (se e pag e11-193 ).EVA P PURG E CONTRO L SOLENOI DVALVE 2 P CONNECTO R (C127 )
Repair ope n in th e wir e betwee n
th e EVA P purg e contro l solenoi d
valve an d PC M (A23) .
(To pag e 11-193 )
NO
Wir e sid e o ffemal eterminal s
YES
NO
JUMPE RWIRE
YES
NO
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(From pag e 11-192 )
I s ther e batter y voltage ?
NO
Repai r ope n i n th e wir e betwee n
th e EVA P purg e contro l solenoi d
valve an d No . 2 0 EC U (PCM ) (2 0A) fuse .
EVAP bypas s solenoi d valv e test .
Chec k th e EVA P bypas s solenoi d
valve:1. Disconnec t th e vacuu m hos e
fro m th e EVA P tw o wa y valve ,
an d connec t a vacuu m pum p
t o th e hose .
2. Tur n th e ignitio n switc h O N (II) .3. Appl y vacuu m to th e hose .
Dos e th e valv e hol d vacuum ?
NO
Chec k th e EVA P bypas s solenoi dvalve:1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e EVA P bypas s
solenoi d valv e 2 P connector .
3 . Chec k fo r continuit y betwee n
th e EVA P bypas s solenoi d
valv e 2 P connecto r termina l
No . 2 an d bod y ground .
I s ther e continuity ?
YES
Chec k fo r a shor t i n th e wir e
(2WB S line) :
1 . Disconnec t th e ECM/PC M
connecto r F (8P) .
2 . Chec k fo r continuit y betwee n
th e EVA P bypas s solenoi d
valv e 2 P connecto r termina l
No . 2 an d bod y ground .
I s ther e continuity ?
NO
Substitut e a known-goo d PC M
an d rechec k (se e pag e 11-42 fo r
immobilize r information) . I f
symptom/indicatio n goe s away ,
replac e th e origina l PCM . Replac
e th e EVA P purg e contro l
solenoi d valve .
EVAP TWO-WA YVALVE
VACUU MPUMP/GAUGE ,
0 - 3 0 in.H g
A973 X -
04 1 -XXXX X
EVAPBYPAS SSOLENOI DVALVE
EVAP bypas s solenoi d valve/EVA P
two-wa y valv e is OK . D o th e EVA P
contro l caniste r ven t shu t valv etest (se e pag e 11-194 ).
EVAP BYPASS SOLENOID
VALVE 2P CONNECTOR (C320)
Replac e th e EVA P bypas s solenoi d
valv e an d O-rings .
Repai r shor t i n th e wir e betwee n
PC M (F1 ) an d EVA P bypas s
solenoi d valve .
O-RING SReplace .YES
NO
YE S
Wir e sid e o f
femal e
terminal s
YES
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
EVAP contro l caniste r ven t shu t
valv e test .
Chec k th e EVA P contro l caniste r
ven t shu t valve :
1 . Disconnec t th e vacuu m hos e
fro m th e EVA P thre e wa y
valve , an d connec t a vacuu m
pump to th e hose .2. Connec t th e PC M connecto r
termina l F 5 to th e bod y groun d
with a jumpe r wire .3. Tur n th e ignitio n switc h O N (II) .4. Appl y vacuu m to th e hose .
Doe s th e valv e hol d vacuum ?
I s ther e batter y voltage ?
NO
Repai r ope n in th e wir e betwee n
th e EVA P contro l caniste r ven t
shu t valv e an d No . 2 0 EC U (PCM )
(2 0 A ) fuse .
EVAPCONTRO LCA1
VACUU M
PUMP/GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 - XXXX X
PCM CONNECTO R F (8P )
VS V (RED/WHT )
JUMPER WIR E
EVAPTHRE E WA YVALV E
Wire sid e o f femal e
terminal s
EVA P contro l caniste r ven t shu t
valv e i s OK . D o th e caniste r sys -
te m lea k tes t (se e pag e 11-195 ). EVA
P CONTRO L
CANISTE R VEN T SHU T
VALV E 2P CONNECTO R (C316 )
Wir e sid e o f femal e terminal s
NORepai r ope n i n th e wir e betwee n
th e EVA P contro l caniste r ven t
shu t valv e an d PC M (F5) .
Replac e th e EVA P contro l canis -
te r ven t shu t valv e an d O-ring .
YES
YES
Is ther e continuity ?
NO
YE S
Chec k fo r a n ope n i n th e wir e
(VS V line) :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e EVA P contro l
caniste r ven t shu t valv e 2 P
connector .
3 . Chec k fo r continuit y betwee n
th e EVA P contro l caniste r ven t
shu t valv e 2 P connecto r termi -
na l No . 2 an d bod y ground .
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Does th e voltag e dro p t o 1. 5 V
an d hold s a t leas t 2 0 seconds ?
YES
Inspec t th e EVA P contro l caniste r
ven t shu t valv e lin e an d connec -
tions .
EVAP TWO-WA YVALVE
NO
VACUU M
PUMP /
GAUGE ,0 - 3 0 in.H gA973X -041 -XXXX X
Check th e EVA P purg e contro l
solenoi d valv e lin e an d connec -
tions:1. Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e purg e lin e hos e
fro m th e EVA P contro l caniste r
an d plu g th e port .
3 . Tur n th e ignitio n switc h O N (II) .
4 . Whil e monitorin g th e FT P
Senso r voltag e wit h th e Hond a
PG M Tester , o r measurin g volt -
ag e betwee n PC M connecto r ter -
minal s D1 5 an d D2 2 slowl y
pum p th e vacuu m pum p usin g a
strok e ever y 1- 2 seconds .5. Continu e t o pum p vacuu m
unti l th e voltag e drop s t o
approx . 1.5V .
NOTE : Mak e sur e tha t th e
engin e coolan t temperatur e
stil l abov e 95° F (35°C ) an d you r
vacuu m pum p ha s n o leak .
6 . Monito r voltag e fo r 2 0 seconds . PC
M CONNECTO R D (22P )
Wir e sid e o f femal e terminal s
Doe s th e voltag e dro p to 1. 5 V
an d hold s a t leas t 2 0 seconds ? Inspec
t th e EVA P purg e contro l
solenoi d valv e lin e an d connec -
tions . I f the y ar e OK , d o th e
EVA P two-wa y valv e tes t (se e
pag e 11-205 ).
YE S
NO
Replac e th e EVA P contro l canister .
Caniste
r syste m lea k test .
Chec k th e EVA P contro l caniste r
ven t shu t valv e lin e an d connec -
tions :
1. Tur n th e ignitio n switc h OFF .2. Connec t a tw o three-wa y te e
fitting s int o th e hos e fro m th e
EVA P contro l caniste r t o th e
EVA P two-wa y valve . Connec t
th e fue l tan k pressur e senso r
to on e o f th e te e fitting s an dthe vacuu m pum p to th e other .3. Remov e th e ven t hos e fro m th e
EVA P contro l caniste r ven t shu t
valv e an d ca p th e por t t o sea l
th e fres h ai r ven t fo r th e EVA P
contro l canister .
4 . Tur n th e ignitio n switc h O N (II) .
5 . Whil e monitorin g th e FT P
Senso r voltag e wit h th e Hond a
PG M Tester , o r measurin g volt -
ag e betwee n PC M connecto r ter -
minal s D1 5 an d D2 2 slowl y
pum p th e vacuu m pum p usin g a
strok e ever y 1- 2 seconds .6. Continu e t o pum p vacuu muntil tha t voltag e drop s t oapprox . 1. 5 V .
NOTE : Mak e sur e tha t th e
engin e coolan t temperatur e
stil l abov e 95° F (35°C ) an d you r
vacuu m pum p ha s n o leak .
7 . Monito r tha t voltag e fo r 2 0
seconds .
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
'00 - 0 1 models :
Troubleshootin g Flowchar t
The MIL has bee n reporte d on .
DT C P145 7 is stored .
Chec k th e EVA P caniste r purg e
valve:1. Disconnec t th e vacuu m hos e
fro m th e EVA P caniste r purg e
valve , an d connec t a hos e an d
a vacuu m pum p t o th e EVA P
caniste r purg e valve .
2 . Connec t th e PC M connecto r
termina l A2 3 t o th e bod y
ground wit h a jumpe r wire .3. Tur n th e ignitio n switc h O N (II) .4. Appl y vacuu m to th e hose .
Dos e th e valv e hol d vacuum ?
YES
Chec k fo r a n ope n i n th e wir e
(PC S line) :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e EVA P caniste r
purg e valv e 2 P connector.
3 . Chec k fo r continuit y betwee n
th e EVA P caniste r purg e valv e
2 P connecto r termina l No . 1 an d
bod y ground .
I s ther e continuity ?
YES
Chec k fo r a n ope n i n th e wir e
(IG 1 line) :
1. Tur n th e ignitio n switc h O N (II) .2. Measur e voltag e betwee n th e
EVA P bypas s solenoi d valv e 2 P
connecto r termina l No . 2 an d
bod y ground . PC
M CONNECTO R A (26P )
JUMPE R
WIRE
EVA P caniste r purg e valv e is OK .
D o th e EVA P bypas s solenoi d
valv e tes t (se e pag e 11-197 ).
Repai r ope n i n th e wir e betwee n
th e EVA P caniste r purg e valv e
and PC M (A23) .
(To pag e 11-197 )
11-196
NO
Wir e sid e o f
femal e
terminal s
NO
EVA P CANISTE R PURG EVALVE 2P CONNECTO R (C127 )
Wir
e sid e o f
femal eterminal s
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