Honda Accord 2008 Manual page 1026

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Automatic Transmission
General Troubleshooting Information
How to Check for DTCs with the Honda
Diagnostic System (HDS)
W h e n t h e p o w e r t r a i n c o n t r o l m o d u l e ( P C M ) s e n s e s a n
a b n o r m a l i t y i n t h e i n p u t o r o u t p u t s y s t e m , t h e D
i n d i c a t o r ( A ) i n t h e g a u g e c o n t r o l m o d u l e (B) w i l l
u s u a l l y b l i n k .
W h e n t h e H o n d a D i a g n o s t i c S y s t e m ( H D S ) is c o n n e c t e d
t o t h e d a t a l i n k c o n n e c t o r ( D L C ) ( A ) l o c a t e d u n d e r t h e
d r i v e r ' s s i d e o f t h e d a s h b o a r d , it w i l l i n d i c a t e t h e
d i a g n o s t i c t r o u b l e c o d e (DTC) w h e n t h e i g n i t i o n s w i t c h
is t u r n e d t o O N (II) a n d t h e a p p r o p r i a t e m e n u i s s e l e c t e d .
If t h e D i n d i c a t o r o r t h e m a l f u n c t i o n i n d i c a t o r l a m p
( M I L ) h a s b e e n r e p o r t e d o n , o r if a d r i v e a b i l i t y p r o b l e m
is s u s p e c t e d , f o l l o w t h i s p r o c e d u r e :
1. C o n n e c t t h e H D S t o t h e D L C . ( S e e t h e H D S u s e r ' s
m a n u a l f o r s p e c i f i c i n s t r u c t i o n s . )
2 . T u r n t h e i g n i t i o n s w i t c h t o O N (II). M a k e s u r e t h e
H D S c o m m u n i c a t e s w i t h t h e P C M . If it d o e s n o t , g o
t o t h e D L C c i r c u i t t r o u b l e s h o o t i n g ( s e e p a g e
1 1 - 2 5 9 ) .
3. S e l e c t A / T s y s t e m , a n d o b s e r v e t h e D T C i n t h e
D T C s M E N U o n t h e H D S s c r e e n .
4. R e c o r d t h e f r e e z e d a t a a n d t h e o n - b o a r d s n a p s h o t s
f o r a l l f u e l a n d e m i s s i o n s D T C s a n d A / T D T C s .
5. If t h e r e is a f u e l a n d e m i s s i o n s D T C , f i r s t c h e c k t h e
f u e l a n d e m i s s i o n s s y s t e m a s i n d i c a t e d b y t h e D T C .
6. C l e a r t h e D T C a n d t h e d a t a .
7. D r i v e t h e v e h i c l e f o r s e v e r a l m i n u t e s u n d e r t h e
s a m e c o n d i t i o n s a s t h o s e i n d i c a t e d b y t h e f r e e z e
d a t a , a n d t h e n r e c h e c k f o r a D T C . If t h e A / T D T C
r e t u r n s , g o t o t h e i n d i c a t e d D T C s t r o u b l e s h o o t i n g .
If t h e D T C d o e s n o t r e t u r n , t h e r e w a s a n
i n t e r m i t t e n t p r o b l e m w i t h i n t h e c i r c u i t . M a k e s u r e
a l l p i n s a n d t e r m i n a l s i n t h e c i r c u i t a r e t i g h t .
Symptom Troubleshooting Versus DTC
Troubleshooting
S o m e s y m p t o m s w i l l n o t t r i g g e r D T C s o r c a u s e t h e D
i n d i c a t o r t o b l i n k . If t h e M I L w a s r e p o r t e d O N o r t h e D
i n d i c a t o r h a s b e e n b l i n k i n g , c h e c k f o r D T C s . If t h e
v e h i c l e h a s a n a b n o r m a l s y m p t o m , a n d t h e r e a r e n o
D T C s s t o r e d , d o t h e s y m p t o m t r o u b l e s h o o t i n g . C h e c k
t h e l i s t o f p r o b a b l e c a u s e ( s ) f o r t h e s y m p t o m , i n t h e
s e q u e n c e l i s t e d , u n t i l y o u f i n d t h e p r o b l e m .
14-4

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