Infiniti F50. Manual - part 415

 

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Infiniti F50. Manual - part 415

 

 

DTC P0300 - P0308 NO. 8 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-

FIRE

EC-301

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EC

9. 

DETECT MALFUNCTIONING PART

Check the following.

Fuel pump and circuit (Refer to 

EC-513, "DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)"

 , 

EC-

666, "FUEL PUMP CIRCUIT"

 .)

Fuel pressure regulator (Refer to 

EC-49

 .)

Fuel lines (Refer to 

MA-16, "Checking Fuel Lines"

 .)

Fuel filter for clogging

>> Repair or replace.

10. 

CHECK IGNITION TIMING

Check the following items. Refer to 

EC-82, "Basic Inspection"

 .

OK or NG

OK

>> GO TO 11.

NG

>> Follow the “Basic Inspection”.

11. 

CHECK HEATED OXYGEN SENSOR 1 BANK 1/BANK 2

Refer to 

EC-219, "Component Inspection"

 .

OK or NG

OK

>> GO TO 12.

NG

>> Replace malfunctioning heated oxygen sensor 1.

12. 

CHECK MASS AIR FLOW SENSOR

 With CONSULT-II

Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-II.

 With GST

Check mass air flow sensor signal in MODE 1 with GST.

OK or NG

OK

>> GO TO 13.

NG

>> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or

engine grounds. Refer to 

EC-179, "DTC P0102, P0103 MAF SENSOR"

 .

13. 

CHECK SYMPTOM MATRIX CHART

Check items on the rough idle symptom in 

EC-87, "Symptom Matrix Chart"

 .

OK or NG

OK

>> GO TO 14.

NG

>> Repair or replace.

Items

Specifications

Target idle speed

650 

±

 50 rpm (in “P” or “N” position)

Ignition timing

12 

±

 5

°

 BTDC (in “P” or “N” position)

3.8 - 5.2 g·m/sec:

at idling

16.0 - 21.5 g·m/sec:

at 2,500 rpm

3.8 - 5.2 g·m/sec:

at idling

16.0 - 21.5 g·m/sec:

at 2,500 rpm

EC-302

DTC P0300 - P0308 NO. 8 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MIS-

FIRE

14. 

ERASE THE 1ST TRIP DTC

Some tests may cause a 1st trip DTC to be set.
Erase the 1st trip DTC from the ECM memory after performing the tests. Refer to 

EC-63, "HOW TO ERASE

EMISSION-RELATED DIAGNOSTIC INFORMATION"

 .

>> GO TO 15.

15. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

DTC P0327, P0328, P0332, P0333 KS

EC-303

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EC

DTC P0327, P0328, P0332, P0333 KS

PFP:22060

Component Description

EBS00MDJ

The knock sensor is attached to the cylinder block. It senses engine
knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.

On Board Diagnosis Logic

EBS00MDK

The MIL will not light up for these diagnoses.

DTC Confirmation Procedure

EBS00MDL

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 10V at idle.

 WITH CONSULT-II

1.

Turn ignition switch “ON” and select “DATA MONITOR” mode with CONSULT-II.

2.

Start engine and run it for at least 5 seconds at idle speed.

3.

If 1st trip DTC is detected, go to 

EC-305, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB0021E

DTC No.

Trouble Diagnosis Name

DTC Detected Condition

Possible Cause

P0327
0327
(bank 1)

Knock sensor circuit low 
input

An excessively low voltage from the sensor 
is sent to ECM.

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

Knock sensor

P0332
0332
(bank 2)

P0328
0328
(bank 1)

Knock sensor circuit high 
input

An excessively high voltage from the sensor 
is sent to ECM.

P0333
0333
(bank 2)

SEF058Y

EC-304

DTC P0327, P0328, P0332, P0333 KS

Wiring Diagram

EBS00MDM

TBWM0021E

 

 

 

 

 

 

 

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