Nissan Almera Tino V10. Manual — part 477
EC-734
[QG (WITHOUT EURO-OBD)]
DTC P0327, P0328 KS
DTC P0327, P0328 KS
PFP:22060
Component Description
EBS00QYJ
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
EBS00QYK
The MI will not light up for this diagnosis.
DTC Confirmation Procedure
EBS00QYL
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 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 1st trip DTC is detected, go to
EC-736, "Diagnostic Procedure"
.
WITHOUT CONSULT-II
1.
Start engine and run it for at least 5 seconds at idle speed.
2.
Turn ignition switch “OFF”, wait at least 10 seconds and then turn “ON”.
3.
Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
4.
If 1st trip DTC is detected, go to
EC-736, "Diagnostic Procedure"
.
MBIB0102E
DTC No.
Trouble Diagnosis Name
DTC Detected Condition
Possible Cause
P0327
0327
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
0328
Knock sensor circuit high
input
An excessively high voltage from the sensor is
sent to ECM.
SEF058Y
DTC P0327, P0328 KS
EC-735
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
EBS00QYM
YEC456A
EC-736
[QG (WITHOUT EURO-OBD)]
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 ECM terminals, such as the ground.
Diagnostic Procedure
EBS00QYN
1.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-I
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check resistance between ECM terminal 15 and engine ground. Refer to Wiring Diagram.
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-II
1.
Disconnect knock sensor harness connector.
2.
Check harness continuity between ECM terminal 15 and knock
sensor terminal 1.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
3.
CHECK KNOCK SENSOR
Refer to
EC-737, "Component Inspection"
.
OK or NG
OK
>> GO TO 5.
NG
>> Replace knock sensor.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
15
W
Knock sensor
[Engine is running]
●
Idle speed
Approximately 2.5V
54
B
Knock sensor shield circuit
ground
[Engine is running]
●
Idle speed
Approximately 0V
Resistance: Approximately 530 - 590k
Ω
[at 20
°
C (68
°
F)]
Continuity should exist.
MBIB0102E
DTC P0327, P0328 KS
EC-737
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
4.
RETIGHTEN GROUND SCREWS
Loosen and retighten engine ground screws.
>> GO TO 5.
5.
CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1.
Reconnect knock sensor harness connector.
2.
Check harness continuity between ECM terminal 54 and engine ground.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00QYO
KNOCK SENSOR
Check resistance between knock sensor terminal 1 and ground.
NOTE:
It is necessary to use an ohmmeter which can measure more
than 10 M
Ω
.
CAUTION:
Do not use any knock sensors that have been dropped or phys-
ically damaged. Use only new ones.
Removal and Installation
EBS00QYP
KNOCK SENSOR
Refer to
.
MBIB0095E
Resistance: Approximately 530 - 590k
Ω
[at 20
°
C (68
°
F)]
SEF227W
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