Infiniti EX35. Manual — part 627
EC-250
< COMPONENT DIAGNOSIS >
[VQ35HR]
P0327, P0328, P0332, P0333 KS
3.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F9, F201
• Harness for open or short between knock sensor and ECM
>> Repair open circuit or short to power in harness or connectors.
4.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between knock sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F9, F201
• 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.
6.
CHECK KNOCK SENSOR
EC-250, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace malfunctioning knock sensor.
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000003133410
1.
CHECK KNOCK SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect knock sensor harness connector.
3.
Check resistance between knock sensor terminals as follows.
NOTE:
DTC
Knock sensor
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0327, P0328
1
F203
2
F102
72
Existed
P0332, P0333
2
F202
2
DTC
Knock sensor
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0327, P0328
1
F203
1
F102
73
Existed
P0332, P0333
2
F202
1
69
P0327, P0328, P0332, P0333 KS
EC-251
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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 physically damaged. Use only new ones.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning knock sensor.
Terminals
Resistance
1 and 2
Approx. 532 - 588 k
Ω
[at 20
°
C (68
°
F)]
EC-252
< COMPONENT DIAGNOSIS >
[VQ35HR]
P0335 CKP SENSOR (POS)
P0335 CKP SENSOR (POS)
Description
INFOID:0000000003133411
The crankshaft position sensor (POS) is located on the cylinder
block facing the gear teeth (cogs) of the signal plate. It detects the
fluctuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
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.
ECM receives the signals as shown in the figure.
DTC Logic
INFOID:0000000003133412
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
JMBIA0062ZZ
JMBIA0001GB
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0335
Crankshaft position sen-
sor (POS) circuit
• The crankshaft position sensor (POS) signal
is not detected by the ECM during the first
few seconds of engine cranking.
• The proper pulse signal from the crankshaft
position sensor (POS) is not sent to ECM
while the engine is running.
• The crankshaft position sensor (POS) signal
is not in the normal pattern during engine run-
ning.
• Harness or connectors
[CKP sensor (POS) circuit is open or
shorted.]
[CMP sensor (PHASE) (bank 2) circuit is
shorted.]
[EVT control position sensor (bank 2) cir-
cuit is shorted.]
(Battery current sensor circuit is shorted.)
(APP sensor 2 circuit is shorted.)
(EVAP control system pressure sensor
circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
(bank 2)
• Exhaust valve timing control position sen-
sor (bank 2)
• Battery current sensor
• Accelerator pedal position sensor
• EVAP control system pressure sensor
• Refrigerant pressure sensor
• Signal plate
P0335 CKP SENSOR (POS)
EC-253
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
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K
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A
EC
N
P
O
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V with igni-
tion switch ON.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for at least 5 seconds.
If engine does not start, crank engine for at least 2 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003133413
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection M95. Refer to Ground Inspection in
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-I
1.
Disconnect crankshaft position (CKP) sensor (POS) harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between CKP sensor (POS) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 3.
3.
CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch ON.
2.
Disconnect ECM harness connector.
3.
Check the continuity between CKP sensor (POS) harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit.
4.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
CKP sensor (POS)
Ground
Voltage (V)
Connector
Terminal
F2
1
Ground
Approx. 5
CKP sensor (POS)
ECM
Continuity
Connector
Terminal
Connector
Terminal
F2
1
F101
46
Existed
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F101
46
CKP sensor (POS)
F2
1
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