Honda Accord 2008 Manual page 1502

V6
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VSA System Components
DTC Troubleshooting (cont'd)
10. R e c o n n e c t a l l c o n n e c t o r s .
1 1 . U p d a t e t h e V S A m o d u l a t o r - c o n t r o l u n i t i f i t d o e s
n o t h a v e t h e l a t e s t s o f t w a r e , r e f e r t o t h e 2 0 0 8 - 2 0 0 9
A c c o r d S e r v i c e M a n u a l ( s e e p a g e 1 9 - 1 4 0 ) . If t h e
u n i t a l r e a d y h a s t h e l a t e s t s o f t w a r e , s u b s t i t u t e a
k n o w n - g o o d V S A m o d u l a t o r - c o n t r o l u n i t , r e f e r t o
t h e 2 0 0 8 - 2 0 0 9 A c c o r d S e r v i c e M a n u a l ( s e e p a g e
1 9 - 1 4 1 ) .
12. T u r n t h e i g n i t i o n s w i t c h t o L O C K ( 0 ) , t h e n t u r n it t o
O N (II) a g a i n .
13. C h e c k f o r D T C s w i t h t h e H D S .
Is DTC 86-01 Indicated?
Y E S — C h e c k f o r l o o s e t e r m i n a l s i n t h e V S A
m o d u l a t o r - c o n t r o l u n i t 3 6 P c o n n e c t o r . If t h e V S A
m o d u l a t o r - c o n t r o l u n i t w a s u p d a t e d , s u b s t i t u t e a
k n o w n - g o o d V S A m o d u l a t o r - c o n t r o l u n i t , r e f e r t o
t h e 2 0 0 8 - 2 0 0 9 A c c o r d S e r v i c e M a n u a l ( s e e p a g e
1 9 - 1 4 1 ) , t h e n r e t e s t . If t h e V S A m o d u l a t o r - c o n t r o l
u n i t w a s s u b s t i t u t e d , g o t o s t e p 1 .
N O — I f t h e V S A m o d u l a t o r - c o n t r o l u n i t w a s
u p d a t e d , t r o u b l e s h o o t i n g i s c o m p l e t e . If t h e V S A
m o d u l a t o r - c o n t r o l u n i t w a s s u b s t i t u t e d , r e p l a c e t h e
o r i g i n a l V S A m o d u l a t o r - c o n t r o l u n i t , r e f e r t o t h e
2 0 0 8 - 2 0 0 9 A c c o r d S e r v i c e M a n u a l ( s e e p a g e
1 9 - 1 4 1 ) . If a n y o t h e r D T C s a r e i n d i c a t e d , 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 . •
DTC 86-11: F-CAN Communication with
ECM/PCM Malfunction
DTC 86-21: F-CAN Communication with
Engine Malfunction
DTC 86-22: F-CAN Communication with
Engine Malfunction
DTC 86-23: F-CAN Communication with
Engine Malfunction
DTC 86-24: F-CAN Communication with
Engine Malfunction
DTC 86-25: F-CAN Communication with
Engine Malfunction
DTC 86-41: F-CAN Communication with
EAT Malfunction
1. 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).
2 . C l e a r t h e D T C w i t h t h e H D S .
3. T e s t - d r i v e t h e v e h i c l e . D r i v e t h e v e h i c l e a t 7 m p h
( 1 0 k m / h ) o r m o r e .
N O T E : D r i v e t h e v e h i c l e o n t h e r o a d , n o t o n a lift.
4. C h e c k f o r D T C s w i t h t h e H D S .
Is DTC 86-11, 86-21, 86-22, 86-23, 86-24, 86-25,
and/or 86-41 indicated?
Y E S — I f D T C 8 6 - 0 1 i s i n d i c a t e d a t t h e s a m e t i m e , d o
t h e D T C 8 6 - 0 1 t r o u b l e s h o o t i n g f i r s t ( s e e p a g e
1 9 - 2 7 ) . If D T C 8 6 - 0 1 is n o t i n d i c a t e d , g o t o s t e p 5.
N O — I f a n y o t h e r D T C s a r e i n d i c a t e d , 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 D T C s a r e n o t
i n d i c a t e d , i n t e r m i t t e n t f a i l u r e , t h e s y s t e m i s O K a t
t h i s t i m e . C h e c k f o r l o o s e t e r m i n a l s b e t w e e n E C M /
P C M c o n n e c t o r A ( 4 9 P ) a n d t h e V S A m o d u l a t o r -
c o n t r o l u n i t 3 6 P c o n n e c t o r . R e f e r t o i n t e r m i t t e n t
f a i l u r e s t r o u b l e s h o o t i n g , r e f e r t o t h e 2 0 0 8 - 2 0 0 9
A c c o r d S e r v i c e M a n u a l ( s e e p a g e 1 9 - 4 7 ) . B
19-28

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