1996 ACURA RL KA9 Service Repair Manual

(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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