Infiniti F50. Manual - part 417

DTC P0335 CKP SENSOR (POS)

EC-309

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EC

Specification data are reference values and are measured between each terminal and ground.

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.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

42

W/B

ECM relay
(Self shut-off)

[Engine is running]
[Ignition switch “OFF”]

●

For a few seconds after turning ignition switch 
“OFF”

0 - 1.0V

[Ignition switch “OFF”]

●

More than a few seconds passed after turning 
ignition switch “OFF”

BATTERY VOLTAGE
(11 - 14V)

163
166

R
R

Power supply for ECM

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

EC-310

DTC P0335 CKP SENSOR (POS)

TBWM0316E

DTC P0335 CKP SENSOR (POS)

EC-311

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EC

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

EBS00MDV

1. 

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch “OFF”.

2.

Loosen and retighten engine ground screws.

>> GO TO 2.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

63

P/L

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 is 2,000 rpm.

1.0 - 2.0V

PBIB0052E

PBIB0053E

PBIB1118E

EC-312

DTC P0335 CKP SENSOR (POS)

2. 

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

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-II or tester.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M135, F105

●

Harness connectors F33, E33

●

Harness connectors E35, E305

●

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

●

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

>> 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 engine ground.
Refer to Wiring Diagram.

3.

Also check harness for short to power.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

PBIB0022E

Voltage: Battery voltage

SEF479Y

Continuity should exist.