Honda Accord 2008 Manual page 1087

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N P o s i t i o n
L i n e p r e s s u r e ( 1 ) r e g u l a t e d b y t h e r e g u l a t o r v a l v e f l o w s t o t h e s h i f t s o l e n o i d v a l v e s . T h e P C M s w i t c h e s t h e s h i f t
s o l e n o i d v a l v e s O N a n d O F F . T h e c o n d i t i o n s o f t h e s h i f t s o l e n o i d v a l v e s a n d t h e p o s i t i o n s o f t h e s h i f t v a l v e s a r e a s
f o l l o w s :
• S h i f t s o l e n o i d v a l v e A is O F F , a n d c l o s e s t h e s h i f t s o l e n o i d v a l v e A p r e s s u r e p o r t ( S A ) ; s h i f t v a l v e A r e m a i n s o n t h e
l e f t s i d e .
• S h i f t s o l e n o i d v a l v e B is t u r n e d O N , a n d c l o s e s t h e s h i f t s o l e n o i d v a l v e B p r e s s u r e p o r t ( S B ) ; s h i f t v a l v e B a n d s h i f t
v a l v e E r e m a i n o n t h e l e f t s i d e .
• S h i f t s o l e n o i d v a l v e C is O F F , a n d o p e n s t h e s h i f t s o l e n o i d v a l v e C p r e s s u r e p o r t ( S C ) ; s h i f t v a l v e C a n d s h i f t v a l v e D
m o v e t o t h e r i g h t s i d e .
• S h i f t s o l e n o i d v a l v e D is O F F , a n d c l o s e s t h e s h i f t s o l e n o i d v a l v e D p r e s s u r e p o r t ( S D ) .
L i n e p r e s s u r e ( 1 ) a l s o f l o w s t o t h e m o d u l a t o r v a l v e a n d b e c o m e s m o d u l a t o r p r e s s u r e ( 6 ) . M o d u l a t o r p r e s s u r e ( 6 ) f l o w s
t o t h e A / T c l u t c h p r e s s u r e c o n t r o l s o l e n o i d v a l v e s . T h e m a n u a l v a l v e c o v e r s t h e p o r t l e a d i n g p r e s s u r e t o t h e c l u t c h e s ,
a n d h y d r a u l i c p r e s s u r e is n o t a p p l i e d t o t h e c l u t c h e s .
N O T E : W h e n u s e d , ' l e f t " o r " r i g h t " i n d i c a t e s d i r e c t i o n o n t h e h y d r a u l i c c i r c u i t .
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P R E S S U R E
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S O L E N O I D V A L V E S
A T F C O O L E R
F I L T E R
S E R V O V A L V E
( c o n t ' d )
14-65

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