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SEF332I
Component Description
NFEC0932
The knock sensor is attached to the cylinder block. It senses
engine knocking using apiezoelectric element.Aknocking vibration
from the cylinder block is sensed as vibrational pressure. This
pressure is converted into a voltage signal and sent to the ECM.
Freeze frame data will not be stored in the ECM for the knock
sensor. The MIL will not light for knock sensor malfunction.
On Board Diagnosis Logic
NFEC0934
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P0327
0327
Knock sensor circuit
low input
An excessively low voltage from the sensor is sent
to ECM.
I Harness or connectors
(The sensor circuit is open or
shorted.)
I Knock sensor
P0328
0328
Knock sensor circuit
high input
An excessively high voltage from the sensor is
sent to ECM.
SEF058Y
DTC Confirmation Procedure
NFEC0935
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10V at idle.
WITH CONSULT-II
NFEC0935S01
1) Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II
2) Start engine and run it for at least 5 seconds at idle speed.
3) If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-327.
WITH GST
NFEC0935S03
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0327, P0328 KS
Component Description
EC-325
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