Honda Accord 2008 Manual page 534

PGM-FI System
DTC Troubleshooting (cont'd)
DTC P0301: No. 1 Cylinder Misfire Detected
DTC P0302: No. 2 Cylinder Misfire Detected
DTC P0303: No. 3 Cylinder Misfire Detected
DTC P0304: No. 4 Cylinder Misfire Detected
DTC P0305: No. 5 Cylinder Misfire Detected
DTC P0306: No. 6 Cylinder Misfire Detected
N O T E : B e f o r e y o u t r o u b l e s h o o t r e c o r d a l l f r e e z e d a t a
a n d a n y o n - b o a r d s n a p s h o t a n d r e v i e w t h e g e n e r a l
t r o u b l e s h o o t i n g i n f o r m a t i o n ( s e e p a g e 1 1 - 3 ) .
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 . S t a r t t h e e n g i n e , a n d l e t it i d l e w i t h o u t l o a d f o r
2 m i n u t e s ( A / T i n P o r N , M / T i n n e u t r a l ) .
4 . M o n i t o r t h e O B D S T A T U S f o r D T C P 0 3 0 1 , P 0 3 0 2 ,
P 0 3 0 3 , P 0 3 0 4 , P 0 3 0 5 , o r P 0 3 0 6 i n t h e D T C s M E N U
w i t h t h e H D S .
Does the screen indicate FAILED?
Y E S — G o t o s t e p 9 .
N O — I f t h e s c r e e n i n d i c a t e s P A S S E D , g o t o s t e p 5. If
t h e s c r e e n i n d i c a t e s E X E C U T I N G , k e e p i d l i n g u n t i l
a r e s u l t c o m e s o n . If t h e s c r e e n i n d i c a t e s O U T O F
C O N D I T I O N o r N O T C O M P L E T E D , w a i t f o r s e v e r a l
m i n u t e s , a n d r e c h e c k .
5. C h e c k t h e C Y L 1 M I S F I R E , C Y L 2 M I S F I R E , C Y L 3
M I S F I R E , C Y L 4 M I S F I R E , C Y L 5 M I S F I R E , a n d / o r
C Y L 6 M I S F I R E i n t h e D A T A L I S T f o r 10 m i n u t e s
w i t h t h e H D S .
Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE,
and/or CYL6 MISFIRE show misfire counts?
Y E S — G o t o s t e p 9 .
N O — G o t o s t e p 6.
6. T e s t - 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 i n t h e
r a n g e o f t h e s e r e c o r d e d f r e e z e d a t a p a r a m e t e r s :
• E N G I N E S P E E D
• V S S
• R E L T P S E N S O R
• C L V ( c a l c u l a t e d l o a d v a l u e )
• G E A R P O S I T I O N
• E C T S E N S O R 1
7. M o n i t o r t h e O B D S T A T U S f o r D T C P 0 3 0 1 , P 0 3 0 2 ,
P 0 3 0 3 , P 0 3 0 4 , P 0 3 0 5 , o r P 0 3 0 6 i n t h e D T C s M E N U
w i t h t h e H D S .
Does the screen indicate FAILED?
Y E S — G o t o s t e p 9 .
N O — I f t h e s c r e e n i n d i c a t e s P A S S E D , g o t o s t e p 8. If
t h e s c r e e n i n d i c a t e s E X E C U T I N G , k e e p d r i v i n g u n t i l
a r e s u l t c o m e s o n . If t h e s c r e e n i n d i c a t e s O U T O F
C O N D I T I O N o r N O T C O M P L E T E D , g o t o s t e p 6.
8. C h e c k t h e C Y L 1 M I S F I R E , C Y L 2 M I S F I R E , C Y L 3
M I S F I R E , C Y L 4 M I S F I R E , C Y L 5 M I S F I R E , a n d / o r
C Y L 6 M I S F I R E i n t h e D A T A L I S T f o r 10 m i n u t e s
w i t h t h e H D S .
Does CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, CYL4 MISFIRE, CYL5 MISFIRE,
and/or CYL6 MISFIRE show misfire counts?
Y E S — G o t o s t e p 9.
N O — 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 is O K a t t h i s
t i m e . C h e c k t h e f u e l a n d i g n i t i o n s y s t e m c i r c u i t
c o n n e c t o r s f o r l o o s e w i r e s o r p o o r c o n n e c t i o n s . •
9. 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).
10. E x c h a n g e t h e i g n i t i o n c o i l f r o m t h e p r o b l e m
c y l i n d e r w i t h o n e f r o m a n o t h e r c y l i n d e r .
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