Nissan Frontier D22. Manual — part 591
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
EC-1467
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
17.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1297, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
EC-1468
[VG33ER]
DTC P0327, P0328 KS
DTC P0327, P0328 KS
PFP:22060
Component Description
UBS00DWU
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
UBS00DWV
The MIL will not light up for these diagnoses.
DTC Confirmation Procedure
UBS00DWW
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-1470, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II”.
SEF332I
DTC No.
Trouble diagnosis
name
DTC detected 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
DTC P0327, P0328 KS
EC-1469
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
UBS00DWX
BBWA0512E
EC-1470
[VG33ER]
DTC P0327, P0328 KS
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 the ECM terminals, such as the ground.
Diagnostic Procedure
UBS00DWY
1.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check resistance between ECM terminal 64 and engine ground.
NOTE:
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 2.
2.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1.
Disconnect knock sensor harness connector.
2.
Check harness continuity between ECM terminal 64 and knock sensor terminal 1. Refer to Wiring Dia-
gram.
3.
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 following.
●
Harness connector F37, F101
●
Harness for open or short between ECM and knock sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
64
W
Knock sensor
[Engine is running]
●
Idle speed
Approximately 2.5V
Resistance: Approximately 500-620 k
Ω [at 25°C (77°F)]
Continuity should exist.
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