Infiniti F50. Manual - part 416

 

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Infiniti F50. Manual - part 416

 

 

DTC P0327, P0328, P0332, P0333 KS

EC-305

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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.

Diagnostic Procedure

EBS00MDN

1. 

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch “OFF”.

2.

Loose and retighten engine ground screws.

>> GO TO 2.

2. 

CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Disconnect ECM harness connector.

2.

Check resistance between ECM terminals 125, 126 and engine ground. Refer to Wiring Diagram.

NOTE:
It is necessary to use an ohmmeter which can measure more than 10 M

Ω

.

3.

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

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 3.

3. 

CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II

1.

Disconnect knock sensor harness connector.

2.

Check harness continuity between ECM terminal 125 and knock
sensor (bank 1) terminal 1, ECM terminal 126 and knock sensor
(bank 2) terminal 1. Refer to Wiring Diagram.

3.

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

125
126

W
W

Knock sensor (bank 1)
Knock sensor (bank 2)

[Engine is running]

●

Idle speed

Approximately 2.5V

PBIB0011E

Resistance:

Approximately 530 - 590k

Ω

 [at 20

°

C (68

°

F)]

Continuity should exist.

PBIB0021E

EC-306

DTC P0327, P0328, P0332, P0333 KS

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connector F40, F241

●

Harness for open or short between ECM and knock sensor

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

5. 

CHECK KNOCK SENSOR

Refer to 

EC-306, "Component Inspection"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace knock sensor.

6. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

EBS00MDO

KNOCK SENSOR

Check resistance between knock sensor terminal 1 and ground.

NOTE:
It is necessary to use an ohmmeter which can measure more
than 10 M

Ω

.

CAUTION:

Do not use any knock sensors that have been dropped or phys-
ically damaged. Use only new ones.

Removal and Installation

EBS00MDP

KNOCK SENSOR

Refer to 

EM-73, "CYLINDER BLOCK"

 .

Resistance:

Approximately 530 - 590k

Ω

 [at 20

°

C (68

°

F)]

SEF478Y

DTC P0335 CKP SENSOR (POS)

EC-307

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DTC P0335 CKP SENSOR (POS)

PFP:23731

Component Description

EBS00MDQ

The crankshaft position sensor (POS) is located on A/T assembly
facing the gear teeth (cogs) of the signal plate at the end of the
crankshaft. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the 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.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.

CONSULT-II Reference Value in Data Monitor Mode

EBS00MDR

Specification data are reference values.

On Board Diagnosis Logic

EBS00MDS

DTC Confirmation Procedure

EBS00MDT

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” and select “DATA MONITOR” mode
with CONSULT-II.

2.

Crank engine for at least 2 seconds and run it for at least 5 sec-
onds at idle speed.

3.

If 1st trip DTC is detected, go to 

EC-311, "Diagnostic Procedure"

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

4.

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

5.

If 1st trip DTC is detected, go to 

EC-311, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB0562E

MONITOR ITEM 

CONDITION

SPECIFICATION 

ENG SPEED·

●

Run engine and compare the CONSULT-II value with tachometer indication.

Almost the same speed as the 
tachometer indication. 

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0335
0335

Crankshaft position 
sensor (POS) circuit

●

The crankshaft position sensor (POS) signal 
is not detected by the ECM during the first 
few seconds of engine cranking.

●

The proper pulse signal from the crankshaft 
position sensor (POS) is not sent to ECM 
while the engine is running.

●

The crankshaft position sensor (POS) signal 
is not in the normal pattern during engine 
running.

●

Harness or connectors
(The sensor circuit is open or shorted)

●

Crankshaft position sensor (POS)

●

Signal plate

SEF058Y

EC-308

DTC P0335 CKP SENSOR (POS)

Wiring Diagram

EBS00MDU

TBWM0154E

 

 

 

 

 

 

 

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