Crankshaft Speed Fluctuation {Ckf) Sensor - Acura Integra 1998 Service Manual

PGM-FI System
Crankshaft Speed Fluctuation {CKF) Sensor
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Tje scan tool indicates Diagnostic Trouble Code (DTC) P'1336: lntermittent interruption in the Crankshaft Speed
:
Fluctuation {CKF) sensor orcurt.
The scan tool indicates Diagnostic Trouble Code (DTC) P1337: No signal in the Craqkshatt Speed Fluctuation (CKF)
sensor circuit.
DescriDtion
The diagnostic system has a pulser rotor on the crankshaft and a pulse pick-up sensor on the engine block. The ECM mon-
itors the crankshaft speed tluctuation based on the CKF sensor signal, and judges that an engine misfire occurred it the
lluctuation goes beyond a predetermined limit.
CKF SENSOR CONNECTOR IC 110)
T : l
r + T
IJI',I
crr e
-f-fcxr
na
{BLU/RED}
(D lwHr/REDI
Terminal side of male termanals
-
The MIL has beon.ooorted on.
-
DTC P1336 and/or P1337 aro
stoaed.
Problem vo.itication:
1. Do the ECM Reset Proced!re.
2. Start the engine.
lntermittent feilure, swtem is OK
at ihis timo. Chcck for ooor oon-
noctions or loose wir* ei C110
(CKF sonsor) and ECM.
Check for an open in tho CKF sen-
sor:
1. Turn the ignition switch OFF.
2, Disconnect the CKF sensor con-
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 2 P
connector terminals No. 1 and
N o . 2 .
ls there 1.6 - 3.2 kO?
Check lor . short in tho CKF sen-
30t:
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
body ground and the CKF sensor
2P connector terminals No. 1 and
N o . 2 i n d i v i d u a l l y .
ls there continuity?
( T o p a g e 1 1 - 9 1 )
1 1 - 9 0
T:]
l f
- r l
1 1 2 |
TT
cKF P /6\ 6\ CKF M
relul Y\Z twxvneot
neot ,-- |
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