Infiniti F50. Manual — part 418
DTC P0335 CKP SENSOR (POS)
EC-313
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EC
5.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E305, E35
●
Harness connectors E33, F33
●
Joint connector-29
●
Harness for open or short between crankshaft position sensor (POS) and engine 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 63 and CKP sensor (POS) terminal 2.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E305, E35
●
Harness connectors E33, F33
●
Harness for open or short between crankshaft position sensor (POS) and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK CKPS (POS) SHIELD CIRCUIT FOR OPEN AND SHORT
1.
Disconnect harness connectors E305, E35
2.
Check harness continuity between harness connector E35 terminal 8 and engine ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E305, E35
●
Harness connectors E33, F33
●
Joint connector-28
●
Joint connector-29
●
Harness for open or short between harness connector E35 and engine ground
>> Repair open circuit or short to power in harness or connectors.
Continuity should exist.
Continuity should exist.
EC-314
DTC P0335 CKP SENSOR (POS)
10.
CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to
EC-314, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace crankshaft position sensor (POS).
11.
CHECK GEAR TOOTH
Visually check for chipping signal plate gear tooth.
OK or NG
OK
>> GO TO 12.
NG
>> Replace the signal plate.
12.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00MDW
CRANKSHAFT POSITION SENSOR (POS)
1.
Loosen the fixing bolt of the sensor.
2.
Disconnect crankshaft position sensor (POS) harness connec-
tor.
3.
Remove the sensor.
4.
Visually check the sensor for chipping.
5.
Check resistance as shown in the figure.
Removal and Installation
EBS00MDX
CRANKSHAFT POSITION SENSOR (POS)
Refer to
EM-25, "OIL PAN AND OIL STRAINER"
PBIB0563E
Terminal No. (Polarity)
Resistance
Ω
[at 25
°
C (77
°
F)]
1 (+) - 2 (-)
Except 0 or
∞
1 (+) - 3 (-)
2 (+) - 3 (-)
PBIB0564E
DTC P0340 CMP SENSOR (PHASE)
EC-315
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EC
DTC P0340 CMP SENSOR (PHASE)
PFP:23731
Component Description
EBS00MDY
The camshaft position sensor (PHASE) senses the protrusion of
exhaust camshaft sprocket to identify a particular cylinder. The
crankshaft position sensor (POS) 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.
On Board Diagnosis Logic
EBS00MDZ
DTC Confirmation Procedure
EBS00ME0
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”.
WITH CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.
4.
If 1st trip DTC is detected, go to
EC-317, "Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to next step.
5.
Maintain engine speed at more than 800 rpm for at least 5 sec-
onds.
6.
If 1st trip DTC is detected, go to
EC-317, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0562E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0340
0340
Camshaft position sensor
(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)
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Camshaft position sensor (PHASE)
●
Starter motor (Refer to
.)
●
Starting system circuit (Refer to
.)
●
Dead (Weak) battery
SEF058Y
EC-316
DTC P0340 CMP SENSOR (PHASE)
Wiring Diagram
EBS00ME1
TBWM0156E
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