Honda Accord 2008 Manual page 1165

DTC P0843: Open in 2nd Clutch Transmission
Fluid Pressure Switch Circuit or 2nd Clutch
Transmission Fluid Pressure Switch Stuck
OFF
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 ) .
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 w a r m it u p t o n o r m a l
o p e r a t i n g t e m p e r a t u r e ( t h e r a d i a t o r f a n c o m e s o n ) .
4. S h i f t t o 2 w h i l e p r e s s i n g t h e b r a k e p e d a l , a n d v e r i f y
w i t h t h e H D S i n t h e A / T D a t a L i s t t h a t t h e S H I F T
C O M M A N D i n d i c a t e s 2 n d .
5. C h e c k t h e 2 n d P r e s s u r e S w i t c h s i g n a l w i t h t h e H D S
i n t h e A / T D a t a L i s t .
Is the 2nd Pressure Switch ON?
Y E S — G o t o s t e p 6.
N O — G o t o s t e p 8.
6. T e s t - d r i v e t h e v e h i c l e i n 2 n d g e a r i n D f o r a t l e a s t
2 s e c o n d s , t h e n s l o w d o w n t o a s t o p .
7. M o n i t o r t h e O B D s t a t u s f o r P 0 8 4 3 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 9 .
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 a n d l o o s e t e r m i n a l s a t t h e 2 n d
c l u t c h t r a n s m i s s i o n f l u i d p r e s s u r e s w i t c h 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 6.
8 . M e a s u r e t h e 2 n d c l u t c h p r e s s u r e ( s e e p a g e 1 4 - 2 0 7 ) .
Is the 2nd clutch pressure within the service
limits?
Y E S — G o t o s t e p 9 .
N O — R e p a i r s h i f t v a l v e s A , B, a n d C, a n d r e l a t e d
h y d r a u l i c c i r c u i t , o r r e p l a c e t h e t r a n s m i s s i o n , t h e n
g o t o s t e p 2 0 .
( c o n t ' d )
14-143