Honda Civic Service Manual page 455

t
Crankshaft Speed Fluctuation (CKF) Sensor -
('99 - 00 Mociels except D16Y5 engine with M/T)
The scan tool indicates Diagnostic Trouble code (DTC) P1336: Intermittent interruption in the crankshaft
speed
Fluctuation (CKF) sensor circuit
The scan tool indicates Diagnostic Trouble Code (DTC) P1337: No signal in the Crankshaft Speed
Fluctuation (CKF)
sensor circuat,
Description
T h e d i a g n o s t i c s y s t e m h a s a p u l s e r r o t o r o n t h e c r a n k s h a f t a n d a p u | s e p i c k - u p s e n s o r o n t h e e n g i n e b | o c k . T h e E c M / P
monitors the crankshaft speed fluctuation based on the cKF sensor signal. and
judges that an engine misfire occurred if
the fluctuation goes beyond a predetermined limit'
I
Ftu6l
tF13g7l
CKF SENSOR 3P CONNECTOR
r--r t
|-.r-r'--]l
l l l l 2 l 3 l l
. l - - - ' . - T _
C K F M I
I C K F P
t w H T l | / A i
i l B l u l
--\9-
T e r m i n a l s i d e o I m a l e t e r m i n a l s
CKF M
(WHT)
CKF P
(BLU)
t
(cont'd)
1 1 - 1 8 5
- The MIL has b€on reportad on.
- DTC P1336 and/or P1337 are
stored.
Problem verification:
1. Do the ECM/PCM Reset Proce'
dure.
2. Start the engine
lntermittcnt failuro, sydcm is OK
ai this time. Check lot Poor con_
noctions or loo3e wiros at C102
ICKF s€nsor) and ECM/FCM, and
make suro CKF sansor mounting
bolt b tight.
Check tor an open in the CKF sen_
1. Turn the ignition switch OFF
2. Disconnect the CKF sensor 3P
3 . 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 t h e C K F s e n s o r 3 P
connector terminals No. 1 and
N o . 3 .
ls there 1.6 3.2 kO?
Check for a short in ihe CKF sen_
sot:
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
b o d y g r o u n d a n d t h e C K F s e n s o r
3 P c o n n e c t o r t e r m i n a l s N o 1 a n d
N o . 3 i n d i v i d u a l l Y .
( T o p a g e 1 1 - 1 8 6 )