Infiniti G35 (V35). Manual - part 372

DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-

FIRE

EC-369

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16. 

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 Service $01 with GST.

OK or NG

OK

>> GO TO 17.

NG

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

ground. Refer to 

EC-207, "DTC P0101 MAF SENSOR"

 .

17. 

CHECK SYMPTOM MATRIX CHART

Check items on the rough idle symptom in 

EC-92, "Symptom Matrix Chart"

 .

OK or NG

OK

>> GO TO 18.

NG

>> Repair or replace.

18. 

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-61, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"

 .

>> GO TO 19.

19. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

2.0 - 6.0 g·m/sec:

at idling

7.0 - 20.0 g·m/sec:

at 2,500 rpm

2.0 - 6.0 g·m/sec:

at idling

7.0 - 20.0 g·m/sec:

at 2,500 rpm

EC-370

DTC P0327, P0328 KS

DTC P0327, P0328 KS

PFP:22060

Component Description

NBS000RU

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

NBS000RV

The MIL will not light up for these self-diagnoses.

DTC Confirmation Procedure

NBS000RW

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-372, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

PBIB0998E

DTC No.

Trouble diagnosis 

name

DTC detected condition

Possible cause

P0327
0327

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

P0328
0328

Knock sensor circuit 
high input

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

SEF058Y

DTC P0327, P0328 KS

EC-371

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Wiring Diagram

NBS000RX

TBWM1619E

EC-372

DTC P0327, P0328 KS

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

NBS000RY

1. 

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

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check resistance between ECM terminal 15 and ground. Refer to Wiring Diagram.

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

Ω

.

4.

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 2.

2. 

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

1.

Disconnect knock sensor harness connector.

2.

Check harness continuity between ECM terminal 15 and knock
sensor terminal 1. 
Refer to Wiring Diagram.

3.

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 F37, F229

●

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.

4. 

CHECK KNOCK SENSOR

Refer to 

EC-373, "Component Inspection"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Replace knock sensor.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

15

W

Knock sensor

[Engine is running]

●

Idle speed

Approximately 2.5V

Resistance: Approximately 532 - 588 k

Ω

 [at 20

°

C (68

°

F)]

Continuity should exist.

PBIB0998E