Honda Accord 2008 Manual page 1073

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D e c e l e r a t i o n C o n t r o l
W h e n t h e v e h i c l e g o e s a r o u n d a c o r n e r a n d n e e d s t o d e c e l e r a t e f i r s t a n d t h e n a c c e l e r a t e , t h e P C M g o e s i n t o t h e
d e c e l e r a t i o n c o n t r o l m o d e t o r e d u c e t h e n u m b e r o f t i m e s t h e t r a n s m i s s i o n s h i f t s . W h e n t h e v e h i c l e is d e c e l e r a t i n g
f r o m s p e e d s a b o v e 2 5 m p h (40 k m / h ) , t h e P C M s h i f t s t h e t r a n s m i s s i o n f r o m 4 t h t o 3 r d e a r l i e r t h a n n o r m a l t o c o p e w i t h
u p c o m i n g a c c e l e r a t i o n .
S h i f t - H o l d C o n t r o l
W h e n n e g o t i a t i n g w i n d i n g r o a d s , t h e t h r o t t l e is s u d d e n l y r e l e a s e d a n d t h e b r a k e s a r e a p p l i e d , a s is t h e c a s e w h e n
d e c e l e r a t i n g at t h e e n t r a n c e o f a c o r n e r , S h i f t - H o l d C o n t r o l k e e p s t h e t r a n s m i s s i o n i n i t s c u r r e n t ( l o w e r ) g e a r a s it
n e g o t i a t e s t h e c o r n e r a n d a c c e l e r a t e s o u t .
W h e n t h e v e h i c l e is d r i v e n a g g r e s s i v e l y o n a w i n d i n g r o a d , t h e P C M e x t e n d s t h e e n g a g e m e n t t i m e o f 3 r d g e a r a n d 4 t h
g e a r t o p r e v e n t t h e t r a n s m i s s i o n f r o m f r e q u e n t l y s h i f t i n g b e t w e e n 3 r d , 4 t h , a n d 5 t h g e a r s . T h i s a l l o w s t h e d r i v e r t o
h a v e m o r e c o n t r o l f o r b o t h a c c e l e r a t i o n a n d d e c e l e r a t i o n .
T h e P C M m o n i t o r s t h e a v e r a g e c h a n g e i n v e h i c l e s p e e d a n d t h r o t t l e o v e r t i m e . W h e n t h e s e v a l u e s e x c e e d t h o s e f o r
n o r m a l d r i v i n g c o n d i t i o n s , t h e u p s h i f t f r o m 3 r d t o 4 t h g e a r a n d 4 t h t o 5 t h g e a r is d e l a y e d . T h i s g i v e s m o r e c o n t r o l o v e r
p o w e r , a n d e n g i n e b r a k i n g w h e n t h e d r i v e r is d r i v i n g a g g r e s s i v e l y a r o u n d w i n d i n g r o a d s . T h e t r a n s m i s s i o n r e s u m e s
t h e n o r m a l u p s h i f t p a t t e r n a f t e r t h e P C M d e t e r m i n e s t h a t n o r m a l d r i v i n g h a s r e s u m e d .
\f\J\^
: Throttle released and brakes applied
Operation pattern of
accelerator
Shift pattern of
conventional
automatic transmission
4 t h
5 t h
Shift pattern of
Shift-Hold Control
automatic transmission
3 r d
( c o n t ' d )
14-51

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