Honda Accord 2008 Manual page 1127

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DTC P0718: Input Shaft (Mainshaft) Speed
Sensor Intermittent Failure
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 w i t h t h e H D S , a n d r e v i e w
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 4 - 4 ) .
• T h i s c o d e is c a u s e d b y a n e l e c t r i c a l c i r c u i t p r o b l e m
a n d c a n n o t b e c a u s e d b y a m e c h a n i c a l p r o b l e m i n t h e
t r a n s m i s s i o n .
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 w i t h t h e s h i f t l e v e r i n D, a n d
let t h e t r a n s m i s s i o n s h i f t t h r o u g h a l l f i v e g e a r s a t
s p e e d s o v e r 12 m p h ( 2 0 k m / h ) . S l o w d o w n , a n d
s t o p t h e w h e e l s .
4. M o n i t o r t h e O B D s t a t u s f o r P 0 7 1 8 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 HDS indicate
FAILED?
Y E S — G o t o s t e p 5.
N O — I f t h e H D S i n d i c a t e s P A S S 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 is O K a t t h i s t i m e . C h e c k f o r
p o o r c o n n e c t i o n s o r l o o s e t e r m i n a l s b e t w e e n t h e
i n p u t s h a f t ( m a i n s h a f t ) s p e e d s e n s o r a n d t h e P C M .
If t h e H D S i n d i c a t e s N O T C O M P L E T E D , g o t o s t e p 3.
5. 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 ) .
6. D i s c o n n e c t t h e i n p u t s h a f t ( m a i n s h a f t ) s p e e d
s e n s o r c o n n e c t o r , a n d i n s p e c t t h e c o n n e c t o r a n d
c o n n e c t o r t e r m i n a l s t o b e s u r e t h e y a r e m a k i n g
g o o d c o n t a c t .
Are the input
shaft
(mainshaft)
speed
sensor
connector
terminals
OK?
Y E S — G o t o s t e p 7.
N O — R e p a i r t h e c o n n e c t o r t e r m i n a l s , t h e n g o t o
s t e p 2 3 .
7. J u m p t h e S C S l i n e w i t h t h e H D S .
8. D i s c o n n e c t P C M c o n n e c t o r s B (49P) a n d C (49P).
9. C h e c k f o r c o n t i n u i t y b e t w e e n P C M c o n n e c t o r
t e r m i n a l s B 4 1 a n d b o d y g r o u n d , a n d b e t w e e n C 4 1
a n d b o d y g r o u n d .
B (49P)
P C M C O N N E C T O R S
C ( 4 9 P )
| l | 2 | 3
4 | 5 | 6 | 7 8
9I10I
11
12 13 1415 16 1718
/
20 21
22 23 24
^<
25
26
/
28
29 30 31 32 33 34 3536 37 38 39
|40|41
4 2 | / | / | 4 6 | 4 6
/
/ | 4 9 |
1 2
3 4 | 5 | 6 | 7 8
9 10
11 12 (13)
A*
16 1718 19 20 21
22
/
24
25
26 27 28
(29) 30
/
3233 34
37 38 39
|40|41 42
431441/| 46
47
AA
L G 2 ( B R N / Y E L )
L G 1 ( B R N / Y E L )
T e r m i n a l side of female t e r m i n a l s
Is there
continuity?
Y E S — G o t o s t e p 1 0 .
N O — R e p a i r o p e n i n t h e w i r e s b e t w e e n P C M
c o n n e c t o r t e r m i n a l s B 4 1 , C 4 1 a n d b o d y g r o u n d
( G 1 0 1 ) , o r r e p a i r p o o r b o d y g r o u n d ( G 1 0 1 ) , t h e n g o
t o s t e p 2 3 .
( c o n t ' d )
14-105

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