Honda Civic Service Manual page 440

PGM-FI System
Knock Sensor (KSl ('96 - 98 D16Y5 engine with CW and'96 - 98 D16Y8
engine)
Forr-l
I,3,.""""
tool indicates Diagnostic Trouble Code (DTC) P0325: A malfunction in the circuit of the Knock sensor
DIAPHRAGM
ECM/PCM CONNECTOR D {16PI
KS 2P CONNECTOR (Cl371
KS
(RED/BLUI
KS
IRED/
BLU)
The MIL has bgen roportsd on.
DTC PO:t25 is stored.
Problom veiilication:
1. Do the ECM/PCM Reset Proce-
oure,
2 . S t a r t t h e e n g i n e . H o l d t h e
engine at 3,000 rpm with no
load (in Park or neutral) until
t h e r a d i a t o r t a n c o m e s o n ,
then let it idle.
3 . H o l d t h e e n g i n e a t 3 , 0 0 0 -
4,000 rpm tor at least 60 sec-
onds.
Intermittenl fsilu16, 3y3l6m b OK
at thi3 timg lteat drivo mav ba
noc63saryl.
Chock tor poor conneclioni or
loose wire3 b€twccn C137 {knock
len3or (KS)l and ECM/PCM.
ls DTC P0325 indicated?
Check for a short in tho wire {KS
linel:
1. Turn the ignition switch OFF.
2. Disconnect the knock sensor
2P connector,
3 . D i s c o n n e c t t h e E C M / P C M
connector O (16P).
4. Check for continuity between
E C M / P C M c o n n e c t o r t e r m i -
nals D6 and body ground.
Reo.ir 3hort in the wire between
ECM/PCM {DG) .nd knock 3.n-
Chock for an open in the wire
(KS linel:
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
ECM/PCM connector torminal D6
and knock sensor 2P connector
terminal No. l.
Ropair open in the wire bgtweon
ECM/PCM lD6l and knock sen-
3('t.
ls there continuity?
Substitute a known-good knock
sensor and recheck.
Rsplace th. o.igin.l knock s€nsor.
Substitute a known-good ECM/
PCM end recheck. lf 3ymptom/
indication goes rway, replace
rhe original ECM/PCM.
Wire side of female terminals
1 \
I
tert
,_-
e s l
n i n i
,--tl
le oI tem
rls
al€
1
2
1
1 8
9
't0
1 t 1 2
1 3 l 4 t 5
t 6
1 1 - 1 7 0