Honda Accord 2008 Manual page 1208

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Automatic Transmission
DTC Troubleshooting (cont'd)
DTC P0979: Short in Shift Solenoid Valve C
Circuit
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 14-4).
• 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. S t a r t t h e e n g i n e , a n d r u n t h e v e h i c l e i n 1st g e a r i n D
f o r a t l e a s t 1 s e c o n d .
4. C h e c k f o r T e m p o r a r y D T C s o r D T C s w i t h t h e H D S .
Is DTC
P0979
indicated?
Y E S — G o t o s t e p 8 .
N O — G o t o s t e p 5.
5. S e l e c t S h i f t S o l e n o i d V a l v e C i n t h e M i s c e l l a n e o u s
T e s t M e n u , a n d t e s t s h i f t s o l e n o i d v a l v e C w i t h t h e
H D S .
Is a clicking
sound
heard?
Y E S — G o t o s t e p 6 .
N O — G o t o s t e p 8.
6. S t a r t t h e e n g i n e , a n d r u n t h e v e h i c l e i n 1st g e a r i n D
f o r a t l e a s t 1 s e c o n d .
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 9 7 9 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 8.
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
i n t e r m i t t e n t s h o r t t o b o d y g r o u n d i n t h e w i r e
b e t w e e n s h i f t s o l e n o i d v a l v e C 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 5.
8. 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).
9. J u m p t h e S C S l i n e w i t h t h e H D S .
10. 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 ( 4 9 P ) .
1 1 . M e a s u r e t h e r e s i s t a n c e 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 C 3 9 a n d B 4 1 o r C 4 1 .
P C M C O N N E C T O R S
B ( 4 9 P )
C ( 4 9 P )
S H C
( G R N )
T e r m i n a l s i d e o f f e m a l e t e r m i n a l s
Is there
less
than
12
0?
Y E S — G o t o s t e p 12.
N O — G o t o s t e p 2 5 .
14-186

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