ACURA RL KA9 1996 Service Repair Manual

(From pag e 11-194 )
I s ther e batter y voltage ?
NO
Repai r ope n in th e wir e betwee n
th e EVA P caniste r purg e valv e
and No . 2 0 EC U (PCM ) (20 A )fuse .
EVA P 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 PC M connec -
tor 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 Mand rechec k (se e pag e 11-42 fo rimmobilize r information) . I fsymptom/indicatio n goe s away ,
replac e th e origina l PCM . Replac
e th e EVA P caniste r purg e
valve .
EVAP TWO-WA YVALVE
VACUU M
PUMP /
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
caniste r ven t shu t valv e tes t (se e
pag e 11-198 ). EVA
P BYPAS S SOLENOI D
VALV E 2P CONNECTO R (C675 )
Wir e sid e o f
femal e
terminal s
Replace 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-RIN
G
Replace .
NO
YE S
YES
YE
S
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
Does th e valv e hol d vacuum ?
I s ther e batter y voltage ?
NO
Repai r ope n i n th e wir e betwee n
th e EVA P caniste r ven t shu t
valv e an d No . 2 0 EC U (PCM ) (2 0
A) fuse .
VACUU M
PUMP/GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 - XXXX X
PCM CONNECTO R F (8P )
JUMPE R WIR E
EVAPCANISTE R
EVAP caniste r ven t shu t valv e i s
OK . D o th e caniste r syste m lea k
tes t (se e pag e 11-199 ). Wir
e sid e o f femal e
terminal s
EVAPCANISTE R VEN T SHU T
VALV E 2 P CONNECTO R (C673 )
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 caniste r ven t shu t
valv e an d PC M (F5) .
Replac e th e EVA P caniste r ven t
shu t valv e an d O-ring .
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 caniste r ven t shu t valv e
2 P connecto r termina l No . 1
an d bod y ground .
YES
Is ther e continuity ?
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 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 .
NO
YE S
EVA P 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
t o 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 .
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Canister syste m lea k test .
Chec k th e EVA P caniste r ven t
shu t valv e lin e an d connections :
1. Tur n th e ignitio n switc h OFF .2. Connec t t o three-wa y te e fit -
ting s int o th e hos e fro m th e
EVA P caniste r t o th e EVA P tw oway valve . Connec t th e fue l
tan k pressur e senso r t o on e o f
the te e fitting s an d th e vacuu mpump t o th e other .
3 . Remov e th e ven t hos e fro m
th e EVA P 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
canister .
4. Tur n th e ignitio n switc h O N (II) .5. Whil e monitorin g th e FT PSenso 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
terminal 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 m
until tha t voltag e drop s t oabou t 1. 5 V .
NOTE : Mak e sur e tha t th e
engin e coolan t temperatur e
still abov e 95°F (35°C ) and you rvacuu m pum p ha s n o leak .7. Monito r tha t voltag e fo r 2 0seconds .
Doe s th e voltag e dro p t o 1. 5 V
an d hold s a t leas t 2 0 seconds ?
NO
Chec k th e EVA P contro l Fue l tan k
vapo r ven t lin e an d connections :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e Fue l tan k vapo r
ven t tub e fro m th e EVA P can -
iste 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 PSenso 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
terminals D1 5 an d D2 2 slowl ypump 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
until tha t voltag e drop s t oabou t 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 .
6 . Monito r tha t voltag e fo r 2 0
seconds .
CAP
EVA PCANISTE R
EVAPCANISTE RVENT
SHU T
VALV E
TEEFITTING S
EVAP TW O WA YVALV E
VACUU MPUMP/GAUGE ,
0 - 3 0 In.H g
A973 X -
041 -XXXX X
PCM CONNECTO R 0 (22P )
Inspec t th e EVA P caniste r ven t
shu t valv e lin e an d connections .
Wire sid e o f femal e terminal s
FUEL TANK VAPOR
VENT TUBE
CA P
(To page 11-200)
YES
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
(From pag e 11-197 )
Doe s th e voltag e dro p to 1. 5 V
an d hol d a t leas t 2 0 seconds ?
NO
Chec k th e EVA P caniste r purg e
valv e lin e an d connections :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e Purg e lin ehos e fro m th e EVA P caniste rand plu g th e port .3. Tur n th e ignitio n switc h O N(ll).4. Whil e monitorin g th e FT PSenso r voltag e wit h th eHond a PG M Tester , o r mea -suring voltag e betwee n PC Mconnecto r terminal 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
until tha t voltag e drop s t oabou t 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 .
6. Monito r tha t voltag e fo r 2 0seconds .
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 fue l tan k vapo r ven t
lin e an d connections .
PURGELINE
CAP
VACUU M
PUMP/GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 -XXXX X
PCM CONNECTO R D (22P )
Inspec t th e EVA P caniste r purg e
valv e lin e an d connections . I f
the y ar e OK , d o th e EVA P tw o
wa y valv e tes t (se e pag e 11-205 ). Wir
e sid e o f femal e terminal s
Replac e th e EVA P canister .
NO
YE S
YE
S
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Evaporative Emissio n (EVAP ) Contro l Caniste r an d EVA P
Contro l Caniste r Ven t Shu t Valv e Replacemen t
'9 6 - 9 9 model s
1 . Remov e th e fron t bumpe r (se e sectio n 20 ).
2 . Remov e th e EVA P contro l canister .
EVAPCONTRO L CANISTE R
3. Remov e th e EVA P contro l caniste r ven t shu t valve .
EVAPCANISTE R
VEN T
SHU TVALV E
O-RINGReplace .
'00 - 0 4 models :
1 . Disconnec t th e connecto r an d hoses .
2 . Remov e th e EVA P caniste r mountin g bol t an d th e
EVA P canister .
MOUNTIN GBOLT
EVA PCANISTE R
3. Remov e th e EVA P caniste r ven t shu t valve .
EVAPCANISTE RVENT
SHU T
VALV E
O-RIN GReplace .
COVER
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
Evaporativ e Emissio n (EVAP ) Tw o Wa y Valv e an d EVA P
Bypas s Solenoi d Valv e Replacemen t
'9 6 - 9 9 models :
O-RINGReplace .
'00 - 0 4 models :
O-RINGReplace .
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Fuel Tan k Vapo r Contro l Valv e Tes t ('0 0-'04 model )
Floa t Tes t
1 . Mak e sur e th e fue l tan k i s les s tha n hal f full .
2. Remov e the fue l fill ca p to reliev e the fue l tan k pres -
sure, the n reinstal l th e cap .
3. Remove the fue l hos e join t protector . Disconnec t
th e fue l tan k vapo r recirculatio n tube , an d connec t a
vacuu m pum p t o th e vapo r recirculatio n tube .
FUEL TAN K VAPO R
RECIRCULATIO N
TUB E
PIPE
VACUU M PUMP /
GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 -
XXXX X
4. Plu g th e pipe .
5 . Appl y vacuu m to th e fue l tan k vapo r recirculatio n
tube .
• I f th e vacuu m holds , replac e th e Fue l Tan k Vapo r
Contro l valv e (se e pag e 11-204 ).
• I f th e vacuu m doe s no t hold , th e floa t i s OK . Valv
e Tes t
1 . Mak e sur e th e fue l tan k i s les s tha n hal f full .
2. Remov e th e fue l fil l cap .
3. Remov e th e fue l hos e join t pretector . Disconnec t
th e fue l tan k vapo r signa l tube .
FUEL TAN K VAPO R
SIGNA L
TUB E
4. Disconnec t th e vacuu m hos e fro m th e EVA P canis -
ter, an d the n plu g th e por t wit h cap .
EVA PCANISTE RVENT SHU TVALV E
VACUU M
PUMP/GAUGE ,
0 - 3 0 in.H g
A973 X - 04 1 - XXXX X
CAP
5. Disconnec t th e vacuu m hos e fro m th e EVA P canis -
te r ven t shu t valve , an d connec t a vacuu m pum p t o
th e vacuu m hose .
6 . Pum p th e vacuu m pum p 8 0 times .
• I f th e vacuu m holds , g o t o ste p 7 .
• I f th e vacuu m doe s no t hold , g o t o ste p 9 .
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
7. Connec t a secon d vacuu m pum p t o th e fue l tan k
vapo r signa l tube .
FUEL TAN K VAPO R
SIGNA L TUB E
VACUU MPUMP/GAUGE ,0-30 in.H gA973 X - 04 1 - XXXX X
8. Appl y vacuu m (1 pump ) t o th e fue l tan k vapo r sig -
na l tube , the n chec k th e vacuu m o n th e pum p i n
ste p 6 .
• I f th e vacuu m holds , replac e th e Fue l Tan k Vapo r
Contro l valve .
• I f th e vacuu m is released , th e Fue l Tan k Vapo r
Contro l valv e is OK .
9 . Disconnec t th e fue l tan k vapo r ven t tub e fro m th e
EVA P canister , the n plu g th e por t o n th e canister .
Reappl y vacuu m (8 0 pumps) .
• I f th e vacuu m holds , replac e th e Fue l Tan k Vapo r
Contro l valve .
• I f th e vacuu m doe s no t hold , inspec t th e EVA P
caniste r ven t shu t valv e O-ring . I f th e 0-rin g i s
OK , replac e th e EVA P caniste r an d repea t ste p 4 .
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Emission Contro l Syste m
Evaporativ e Emissio n (EVAP ) Control s (cont'd )
Fuel Tan k Vapo r Contro l Valv e Replacemen t
1 . Remov e th e fue l tan k (se e pag e
11-151 ).
2 . Remov e th e Fue l Tan k Vapo r Contro l valv e fro m th e
fue l tank .
3 . Instal l part s i n th e revers e orde r o f removal .
4N-m(0.4 kgf-m , 3 Ibf-ft)
FUEL TAN K VAPO R
CONTRO L VALV E
BASE GASKE T
Replace .
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Evaporative Emissio n (EVAP ) Tw o Wa y Valv e Testin g
1. Remov e the fue l fill cap.
2 . Remov e th e vapo r lin e fro m th e EVA P tw o wa y
valv e (locate d abov e th e EVA P canister) , an d con -
nec t i t t o a T-fittin g fro m a vacuu m gaug e an d a
vacuu m pum p a s shown .
'9 6 - 9 9 models :
VACUUM/PRESSUR EGAUGE0 - 4 in.H g
07JA Z - 001000 B
VACUU M PUMP /
GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 -
XXXX XT-FITTIN G
'00 - 0 4 models :
VACUUM/PRESSUR EGAUGE0 - 4 in.H g
07JA Z - 001000 B
VACUU M PUMP /
GAUGE , 0 - 3 0 in.H g
A973 X - 04 1 -
XXXX X
T-FITTIN G
3. Appl y vacuu m slowl y an d continuousl y whil e
watchin g th e gauge . Th e vacuu m shoul d stabiliz e
momentaril y a t 0. 8 - 2. 1 kP a ( 6 - 1 6 mmHg , 0. 2 - 0. 6
in.Hg) .
• I f th e vacuu m stabilize s (valv e opens ) belo w
0. 8 kP a ( 6 mmHg , 0. 2 in.Hg ) o r abov e 2. 1 kP a
(1 6 mmHg , 0. 6 in.Hg) , instal l a ne w valv e an d
retest . 4
. Mov e th e vacuu m pum p hos e fro m th e vacuu m fit -
ting to th e pressur e fitting , an d mov e th e vacuu m
gauge hos e fro m th e vacuu m sid e t o th e pressur e
sid e a s shown .
'9 6 - 9 9 models :
PRESSUR ESIDE
'00 - 0 4 models :
PRESSUR ESIDE
5. Slowl y pressuriz e th e vapo r lin e whil e watchin g th e
gauge . Th e pressur e shoul d b e stabiliz e momentaril y
abov e 1. 0 kP a ( 8 mmHg , 0. 3 in.Hg) .
• I f th e pressur e momentaril y stabilize s (valv e
opens ) abov e 1. 0 kP a ( 8 mmHg , 0. 3 in.Hg) , th e
valv e is OK .
• I f th e pressur e stabilize s belo w 1. 0 kP a ( 8 mmHg ,
0.3 in.Hg) , instal l a ne w valv e an d retest .
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