Infiniti M35/M45 Y50. Manual - part 474

DTC P0335 CKP SENSOR (POS)

EC-369

[VQ35DE]

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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.

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)

Refer to 

EC-370, "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

Refer to 

EC-153, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.

EC-370

[VQ35DE]

DTC P0335 CKP SENSOR (POS)

Component Inspection

NBS004Z2

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

NBS004Z3

CRANKSHAFT POSITION SENSOR (POS)

Refer to 

EM-31, "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, P0345 CMP SENSOR (PHASE)

EC-371

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DTC P0340, P0345 CMP SENSOR (PHASE)

PFP:23731

Component Description

NBS004Z4

The camshaft position sensor (PHASE) senses the retraction of
camshaft (INT) to identify a particular cylinder. The camshaft 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-II Reference Value in Data Monitor Mode

NBS004Z5

Specification data are reference values.

On Board Diagnosis Logic

NBS004Z6

DTC Confirmation Procedure

NBS004Z7

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.

PBIB0562E

PBIB2744E

MONITOR ITEM

CONDITION

SPECIFICATION

ENG SPEED

●

Run engine and compare CONSULT-II 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
(Bank 1)

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 (INT)

●

Starter motor (Refer to 

SC-8, "START-

ING SYSTEM"

 .)

●

Starting system circuit (Refer to 

SC-8, 

"STARTING SYSTEM"

 .)

●

Dead (Weak) battery

P0345
0345
(Bank 2)

EC-372

[VQ35DE]

DTC P0340, P0345 CMP SENSOR (PHASE)

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-376, "Diagnostic Procedure"

.
If 1st trip DTC is not detected, go to next step.

5.

Maintaining engine speed at more than 800 rpm for at least 5
seconds.

6.

If 1st trip DTC is detected, go to 

EC-376, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y