Honda Accord 2008 Manual page 495

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DTC P0116: ECT Sensor 1 Circuit Range/
Performance Problem
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 11-3).
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 E C T S E N S O R 1 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
176 °F (80
°C) or more,
or 0.78
V or
less
indicated?
Y E S — G o t o s t e p 6.
N O — G o t o s t e p 3.
3. N o t e t h e v a l u e o f E C T S E N S O R 1 i n t h e D A T A L I S T
w i t h t h e H D S .
4. S t a r t t h e e n g i n e . H o l d t h e e n g i n e s p e e d a t
3 , 0 0 0 r p m w i t h o u t l o a d ( A / T i n P o r N , M / T i n
n e u t r a l ) u n t i l t h e r a d i a t o r f a n c o m e s o n , t h e n l e t it
i d l e .
5. C h e c k E C T S E N S O R 1 i n t h e D A T A L I S T w i t h t h e
H D S .
Does
ECT
SENSOR
1 change
18 °F (10 °C) or
more?
Y E S — 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 E C T s e n s o r 1 a n d t h e E C M / P C M . •
N O — G o t o s t e p 1 1 .
6. N o t e t h e v a l u e o f E C T S E N S O R 1 i n t h e D A T A L I S T
w i t h t h e H D S .
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. O p e n t h e h o o d , a n d let t h e e n g i n e c o o l f o r 3 h o u r s .
9. 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).
10. C h e c k E C T S E N S O R 1 i n t h e D A T A L I S T w i t h t h e
H D S .
Does
ECT
SENSOR
1 change
18 °F (10 °C) or
more?
Y E S — 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 E C T s e n s o r 1 a n d t h e E C M / P C M . •
N O — G o t o s t e p 1 1 .
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 E C T s e n s o r 1 ( s e e p a g e 1 1 - 2 7 4 ) .
13. 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).
14. R e s e t t h e E C M / P C M w i t h t h e H D S .
15. 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 ) .
16. 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
P0116
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 E C T s e n s o r 1 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 . •
11-97

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