Infiniti FX35 / FX45. Manual — part 537
DTC P0335 CKP SENSOR (POS)
EC-909
< SERVICE INFORMATION >
[VK45DE]
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1.
Disconnect crankshaft position (CKP) sensor (POS) harness
connector.
2.
Turn ignition switch ON.
3.
Check voltage between CKP sensor (POS) terminal 3 and
ground with CONSULT-III or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E211, M41
• Harness connectors F102, M82
• Harness for open or short between crankshaft position sensor (POS) and ECM
• Harness for open or short between crankshaft position sensor (POS) and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Check harness continuity between CKP sensor (POS) terminal 1 and ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F102, M82
• Harness for open or short between crankshaft position sensor (POS) and ground
>> Repair open circuit or short to power in harness or connectors.
6.
CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 13 and CKP sensor (POS) terminal 2.
Refer to Wiring Diagram.
PBIB1483E
Voltage: Battery voltage
SEF481Y
Continuity should exist.
Continuity should exist.
EC-910
< SERVICE INFORMATION >
[VK45DE]
DTC P0335 CKP SENSOR (POS)
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK CRANKSHAFT POSITION SENSOR (POS)
EC-910, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace crankshaft position sensor (POS).
8.
CHECK GEAR TOOTH
Visually check for chipping signal plate gear tooth.
OK or NG
OK
>> GO TO 9.
NG
>> Replace the signal plate.
9.
CHECK INTERMITTENT INCIDENT
>> INSPECTION END
Component Inspection
INFOID:0000000001326744
CRANKSHAFT POSITION SENSOR (POS)
1.
Loosen the fixing bolt of the sensor.
2.
Disconnect crankshaft position sensor (POS) harness connector.
3.
Remove the sensor.
4.
Visually check the sensor for chipping.
5.
Check resistance as shown in the figure.
Removal and Installation
INFOID:0000000001326745
CRANKSHAFT POSITION SENSOR (POS)
AT-243, "Removal and Installation (AWD Models)"
.
PBIB0563E
Terminal No. (Polarity)
Resistance
Ω
[at 25
°
C (77
°
F)]
1 (+) - 2 (-)
Except 0 or
∞
1 (+) - 3 (-)
2 (+) - 3 (-)
PBIB0564E
DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)
EC-911
< SERVICE INFORMATION >
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DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)
Component Description
INFOID:0000000001326746
The camshaft position sensor (PHASE) senses the protrusion of
exhaust camshaft sprocket to identify a particular cylinder. The cam-
shaft position sensor (PHASE) senses the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification
signals.
The sensor consists of a permanent magnet and Hall IC.
When 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.
ECM receives the signals as shown in the figure.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001326747
Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001326748
DTC Confirmation Procedure
INFOID:0000000001326749
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 10.5V with igni-
tion switch ON.
1.
Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
PBIB0562E
PBIB3459E
MONITOR ITEM
CONDITION
SPECIFICATION
ENG SPEED
• Run engine and compare CONSULT-III value with the tachometer indication.
Almost the same speed as
the tachometer indication.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0340
0340
Camshaft position sen-
sor (PHASE) circuit
• The cylinder No. signal is not sent to ECM for
the first few seconds during engine cranking.
• The cylinder No. signal is not sent to ECM
during engine running.
• The cylinder No. signal is not in the normal
pattern during engine running.
• Harness or connectors
(The sensor circuit is open or shorted)
• Camshaft position sensor (PHASE)
• Camshaft sprocket (Exhaust)
• Starter motor (Refer to
• Starting system circuit (Refer to
• Dead (Weak) battery
EC-912
< SERVICE INFORMATION >
[VK45DE]
DTC P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE)
If 1st trip DTC is not detected, go to next step.
4.
Maintaining engine speed at more than 800 rpm for at least 5 seconds.
5.
Check 1st trip DTC.
6.
If 1st trip DTC is detected, go to
Wiring Diagram
INFOID:0000000001326750
TBWM1337E
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