Infiniti F50. Manual - part 418

DTC P0335 CKP SENSOR (POS)

EC-313

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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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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)

●

Camshaft position sensor (PHASE)

●

Starter motor (Refer to 

SC-22, "START-

ING SYSTEM"

 .)

●

Starting system circuit (Refer to 

SC-22, 

"STARTING SYSTEM"

 .)

●

Dead (Weak) battery

SEF058Y

EC-316

DTC P0340 CMP SENSOR (PHASE)

Wiring Diagram

EBS00ME1

TBWM0156E