Infiniti M35/M45 Y50. Manual - part 651

DTC P0335 CKP SENSOR (POS)

EC-1077

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

NBS005GH

TBWT1027E

EC-1078

[VK45DE]

DTC P0335 CKP SENSOR (POS)

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

NBS005GI

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten ground screws on the body.
Refer to 

EC-864, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

13

W/R

Crankshaft position sensor 
(POS)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle

1.0 - 2.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 2.0V

111

SB

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch: OFF]

●

For a few seconds after turning ignition 
switch OFF

0 - 1.5V

[Ignition switch: OFF]

●

More than a few seconds after turning igni-
tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

119

120

R
R

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

PBIB1041E

PBIB1042E

1.

Body ground M70

2.

Body ground M16

PBIB2782E

DTC P0335 CKP SENSOR (POS)

EC-1079

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

2. 

CHECK CRANKSHAFT POSITION (CKP) SENSOR (POS) POWER SUPPLY CIRCUIT

1.

Disconnect crankshaft position (CKP) sensor (POS) (1) harness
connector.

–

Illustration shows the view from under the vehicle.

–

: Vehicle front

2.

Turn ignition switch ON.

3.

Check voltage between CKP sensor (POS) terminal 3 and
ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E108, M15

●

Harness connectors F102, M72

●

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, M72

●

Harness for open or short between crankshaft position sensor (POS) and ground 

>> Repair open circuit or short to power in harness or connectors.

PBIB2700E

Voltage: Battery voltage

SEF481Y

Continuity should exist.

EC-1080

[VK45DE]

DTC P0335 CKP SENSOR (POS)

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-1081, "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-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.