Nissan Frontier D22. Manual - part 289

DTC P0327, P0328 KS

EC-259

[KA24DE]

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EC

DTC P0327, P0328 KS

PFP:22060

Component Description

UBS00D5Y

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

UBS00D5Z

This self-diagnosis has the one trip detection logic.
The MIL will not light up for these diagnoses.

DTC Confirmation Procedure

UBS00D60

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 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 DTC is detected, go to 

EC-261, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II”.

SEF598K

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0327

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

Knock sensor circuit high 
input

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

SEF058Y

EC-260

[KA24DE]

DTC P0327, P0328 KS

Wiring Diagram

UBS00D61

BBWA0549E

DTC P0327, P0328 KS

EC-261

[KA24DE]

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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.

Diagnostic Procedure

UBS00D62

1. 

RETIGHTEN GROUND SCREWS

Loosen and retighten engine ground screws.

>> GO TO 2.

2. 

CHECK INPUT SIGNAL CIRCUIT-1

1.

Turn ignition switch “OFF”.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 64 and ground.
Refer to Wiring Diagram.

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 4.

NG

>> GO TO 3.

3. 

DETECT MALFUNCTIONING PART

Check the harness for open or short between knock sensor and ECM.

OK or NG

OK

>> GO TO 4.

NG

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

4. 

CHECK KNOCK SENSOR

Refer to 

EC-262, "Component Inspection"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Replace knock sensor.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

64

W

Knock sensor

[Engine is running]

●

Idle speed

Approximately 2.4V

BBIA0431E

Resistance

: Approximately 500 - 620 k

Ω [at 25°C (77°F)]

EC-262

[KA24DE]

DTC P0327, P0328 KS

5. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

Component Inspection

UBS00D63

KNOCK SENSOR

Use an ohmmeter which can measure more than 10 M

Ω.

1.

Disconnect knock sensor harness connector.

2.

Check resistance between terminal 1 and ground.

CAUTION:

Discard any knock sensors that have been dropped or physi-
cally damaged. Use only new ones.

Removal and Installation

UBS00D64

KNOCK SENSOR

Refer to 

EM-13, "OUTER COMPONENT PARTS"

 .

Resistance

: 500 - 620 k

Ω [at 25°C (77°F)]

SEF174V