Nissan Frontier D22. Instruction — part 289
DTC P0327, P0328 KS
EC-259
[KA24DE]
C
D
E
F
G
H
I
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K
L
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A
EC
DTC P0327, P0328 KS
PFP:22060
Component Description
UBS00D5Y
The knock sensor is attached to the cylinder block. It senses engine
knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
On Board Diagnosis Logic
UBS00D5Z
This self-diagnosis has the one trip detection logic.
The MIL will not light up for these diagnoses.
DTC Confirmation Procedure
UBS00D60
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
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 DTC is detected, go to
EC-261, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II”.
SEF598K
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0327
Knock sensor circuit low
input
An excessively low voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
Knock sensor
P0328
Knock sensor circuit high
input
An excessively high voltage from the sensor is
sent to ECM.
SEF058Y
EC-260
[KA24DE]
DTC P0327, P0328 KS
Wiring Diagram
UBS00D61
BBWA0549E
DTC P0327, P0328 KS
EC-261
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
UBS00D62
1.
RETIGHTEN GROUND SCREWS
Loosen and retighten engine ground screws.
>> GO TO 2.
2.
CHECK INPUT SIGNAL CIRCUIT-1
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 64 and ground.
Refer to Wiring Diagram.
It is necessary to use an ohmmeter which can measure more than 10 M
Ω.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the harness for open or short between knock sensor and ECM.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK KNOCK SENSOR
Refer to
EC-262, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace knock sensor.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
64
W
Knock sensor
[Engine is running]
●
Idle speed
Approximately 2.4V
BBIA0431E
Resistance
: Approximately 500 - 620 k
Ω [at 25°C (77°F)]
EC-262
[KA24DE]
DTC P0327, P0328 KS
5.
CHECK INTERMITTENT INCIDENT
EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Component Inspection
UBS00D63
KNOCK SENSOR
Use an ohmmeter which can measure more than 10 M
Ω.
1.
Disconnect knock sensor harness connector.
2.
Check resistance between terminal 1 and ground.
CAUTION:
Discard any knock sensors that have been dropped or physi-
cally damaged. Use only new ones.
Removal and Installation
UBS00D64
KNOCK SENSOR
EM-13, "OUTER COMPONENT PARTS"
Resistance
: 500 - 620 k
Ω [at 25°C (77°F)]
SEF174V
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