Nissan Primera P11. Manual — part 258
Wiring Diagram
NCEC0210
YEC089A
DTC P0325 KNOCK SENSOR (KS)
SR20DE
Wiring Diagram
EC-231
Diagnostic Procedure
NCEC0211
1
RETIGHTEN GROUND SCREWS
Loosen and retighten engine ground screws.
SEF202X
©
GO TO 2.
2
CHECK INPUT SIGNAL CIRCUIT-1
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and knock sensor harness connector.
SEF210X
3. Check harness continuity between knock sensor signal terminal 2 and ECM terminal 81.
Refer to wiring diagram.
Continuity should exist.
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.
©
Repair open circuit or short to ground or short to power in harness or connectors.
4
CHECK KNOCK SENSOR
Knock sensor
Refer to “Component Inspection”, EC-SR-233.
OK or NG
OK
©
GO TO 5.
NG
©
Replace knock sensor.
Intake manifold collector
Engine ground
Knock sensor
Knock sensor harness connector
Drive shaft
View from under the vehicle
DTC P0325 KNOCK SENSOR (KS)
SR20DE
Diagnostic Procedure
EC-232
Component Inspection
NCEC0212
KNOCK SENSOR
NCEC0212S01
I
Use an ohmmeter which can measure more than 10 M
Ω
.
1.
Disconnect knock sensor harness connector.
2.
Check resistance between terminal 2 and ground.
Resistance: 532 - 588 k
Ω
[at 20°C (68°F)]
CAUTION:
Discard any knock sensors that have been dropped or physi-
cally damaged. Use only new ones.
5
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-SR-114.
©
INSPECTION END
SEF057X
DTC P0325 KNOCK SENSOR (KS)
SR20DE
Component Inspection
EC-233
Component Description
NCEC0577
The crankshaft position sensor (OBD) is located on the transmis-
sion housing facing the gear teeth (cogs) of the flywheel or drive
plate. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet, core and coil.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
This sensor is not used to control the engine system.
It is used only for the on board diagnosis.
ECM Terminals and Reference Value
NCEC0578
Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (AC Voltage)
58
B
Sensors’ ground
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0V
65
W
Crankshaft position sen-
sor (OBD)
[Engine is running]
I
Warm-up condition
I
Idle speed
3 - 5V (AC range)
SEF721W
[Engine is running]
I
Engine speed is 2,000 rpm
6 - 9V (AC range)
SEF722W
On Board Diagnosis Logic
NCEC0579
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0335
0335
I
The proper pulse signal from the crankshaft position sen-
sor (OBD) is not sent to ECM while the engine is running
at the specified engine speed.
I
Harness or connectors
(The crankshaft position sensor (OBD) circuit is
open.)
I
Crankshaft position sensor (OBD)
SEF956N
Core
Permanent magnet
Coil
SEF226X
Crankshaft position
sensor (OBD) harness connector
Cooling fan motor
(Left side)
DTC P0335 CRANKSHAFT POSITION SENSOR (CKPS) (OBD)
SR20DE
Component Description
EC-234
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