Honda Accord 2008 Manual page 722

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Electronic Throttle Control System
DTC Troubleshooting (cont'd)
2 7 . 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
P2138
Indicated?
Y E S — 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 a t t h e A P P s e n s o r a n d t h e E C M / P C M . If
t h e E C M / P C M 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 E C M / P C M ( s e e p a g e 1 1 - 7 ) , t h e n g o t o s t e p 2 4 .
If t h e E C M / P C M 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 E C M / P C M 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
is c o m p l e t e . If t h e E C M / P C M 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 E C M / P C M ( s e e p a g e 1 1 - 2 8 2 ) . If
a n y o t h e r T e m p o r a r y D T C s o 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 P2176: Throttle Actuator Control System
Idle Position Not Learned
ACAUTION
D o n o t i n s e r t y o u r f i n g e r s i n t o t h e i n s t a l l e d t h r o t t l e
b o d y w h e n y o u 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) o r
w h i l e t h e i g n i t i o n s w i t c h is O N (II). If y o u d o , y o u
w i l l s e r i o u s l y i n j u r e y o u r f i n g e r s if t h e t h r o t t l e v a l v e
is a c t i v a t e d .
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 ) .
• If D T C P 2 1 3 5 is s t o r e d a t t h e s a m e t i m e a s D T C P 2 1 7 6 ,
t r o u b l e s h o o t D T C P 2 1 3 5 f i r s t , t h e n r e c h e c k f o r D T C
P 2 1 7 6 .
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 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 ) .
4. 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), a n d w a i t
10 s e c o n d s .
5. 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
P2176
indicated?
Y E S — G o t o s t e p 6.
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 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
a t t h e t h r o t t l e b o d y a n d t h e E C M / P C M , t h e n c l e a n
t h e t h r o t t l e b o d y ( s e e p a g e 1 1 - 4 3 6 ) . •
6. 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 ) .
7. D i s c o n n e c t t h e i n t a k e a i r d u c t f r o m t h e t h r o t t l e
b o d y .
8. 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).
9. C l e a r t h e D T C w i t h t h e H D S .
11-324

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