Honda Accord 2008 Manual page 491

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DTC P0112: IAT Sensor Circuit Low Voltage
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 h e c k t h e I A T S E N S O R i n t h e D A T A L I S T w i t h t h e
H D S .
Is about
356
°F (180
°C) or more,
or 0.08
V or
less
indicated?
Y E S — G o t o s t e p 3.
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 M A F s e n s o r / I A T s e n s o r a n d t h e E C M / P C M . •
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. D i s c o n n e c t t h e M A F s e n s o r / I A T s e n s o r 5P
c o n n e c t o r .
5. 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).
6. C h e c k t h e I A T S E N S O R i n t h e D A T A L I S T w i t h t h e
H D S .
Is about
356
°F (180
°C) or more,
or 0.08
V or
less
indicated?
Y E S — G o t o s t e p 7.
N O — G o t o s t e p 1 1 .
7. 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).
8. J u m p t h e S C S l i n e w i t h t h e H D S .
9. 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 C ( 4 9 P ) .
10. 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 M A F s e n s o r / I A T
s e n s o r 5P c o n n e c t o r t e r m i n a l N o . 2 a n d b o d y
g r o u n d .
M A F S E N S O R / I A T S E N S O R 5P C O N N E C T O R
1 2
3 4 5
I A T ( R E D / Y E L )
W i r e s i d e o f f e m a l e t e r m i n a l s
Is there
continuity?
Y E S — R e p a i r s h o r t i n t h e w i r e b e t w e e n t h e M A F
s e n s o r / I A T s e n s o r a n d t h e E C M / P C M ( C 2 4 ) , t h e n g o
t o s t e p 13.
N O — G o t o s t e p 1 8 .
1 1 . 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).
12. R e p l a c e t h e M A F s e n s o r / I A T s e n s o r ( s e e p a g e
1 1 - 2 7 3 ) .
13. R e c o n n e c t a l l c o n n e c t o r s .
14. 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).
15. R e s e t t h e E C M / P C M w i t h t h e H D S .
16. D o t h e E C M / P C M i d l e l e a r n p r o c e d u r e ( s e e p a g e
1 1 - 3 8 5 ) .
17. 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
P0112
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 M A F s e n s o r / I A T s e n s o r a n d t h e
E C M / P C M , t h e n g o t o s t e p 1 .
N O — 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 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 . •
( c o n t ' d )
11-93

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