Honda Accord 2008 Manual page 720

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Electronic Throttle Control System
DTC Troubleshooting (cont'd)
2 2 . R e c o n n e c t a l l c o n n e c t o r s .
2 3 . U p d a t e t h e E C M / P C M if it d o e s n o t h a v e t h e l a t e s t
s o f t w a r e ( s e e p a g e 1 1 - 2 8 1 ) , o r 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 ) .
2 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
P2135
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 t h r o t t l e b o d y 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 r e c h e c k . 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
i s 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 P2138: APP Sensor A/B (TP Sensor D/E)
Incorrect Voltage Correlation
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 H D S .
3. P r e s s t h e a c c e l e r a t o r p e d a l t o t h e f l o o r .
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
P2138
indicated?
Y E S — G o t o s t e p 5.
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 A P P s e n s o r a n d t h e E C M / P C M . •
5. C h e c k A P P S E N S O R A a n d A P P S E N S O R B i n t h e
D A T A L I S T w i t h t h e H D S .
Are
they
the same
voltage?
Y E S — G o t o s t e p 6.
N O — G o t o s t e p 1 2 .
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 . 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 E C M / P C M c o n n e c t o r A ( 4 9 P ) .
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