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Nissan Frontier D22. Manual - part 589

DTC P0299 SUPERCHARGER FUNCTION

EC-1459

[VG33ER]

CHECK SUPERCHARGER DRIVING BELT

Visually check the supercharger driving belt for damage or worn.

Start engine and keep it at idle speed.

Check the supercharger driving belt for skipping.

Yes or No

Yes

>> Replace the supercharger drive belt.

>> GO TO 4.

CHECK INTERMITTENT INCIDENT

Refer to

EC-1297, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END.

Removal and Installation

UBS00DWQ

SUPERCHARGER

Refer to

EM-80, "OUTER COMPONENT PARTS"

Is driving belt skipping, damaged or worn?

EC-1460

[VG33ER]

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

FIRE

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

PFP:00000

On Board Diagnosis Logic

UBS00DWR

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the CKP
sensor signal to vary, ECM can determine that a misfire is occurring.

The misfire detection logic consists of the following two conditions.

One Trip Detection Logic (Three Way Catalyst Damage)
On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to over-
heating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.

Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.

DTC Confirmation Procedure

UBS00DWS

CAUTION:

Always drive vehicle at a safe speed.

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.

Sensor

Input Signal to ECM

ECM function

Crankshaft position sensor (OBD)

Engine speed

On board diagnosis of misfire

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0300

Multiple cylinder misfire
detected

Multiple cylinder misfire.

●

Improper spark plug

●

Insufficient compression

●

Incorrect fuel pressure

●

The injector circuit is open or shorted

●

Fuel injector

●

Intake air leak

●

The ignition secondary signal circuit is
open or shorted

●

Lack of fuel

●

Signal plate or flywheel

●

Heated oxygen sensor 1

●

Incorrect PCV hose connection

P0301

No.1 cylinder misfire
detected

No. 1 cylinder misfires.

P0302

No. 2 cylinder misfire
detected

No. 2 cylinder misfires.

P0303

No. 3 cylinder misfire
detected

No. 3 cylinder misfires.

P0304

No. 4 cylinder misfire
detected

No. 4 cylinder misfires.

P0305

No. 5 cylinder misfire
detected

No. 5 cylinder misfires.

P0306

No. 6 cylinder misfire
detected

No. 6 cylinder misfires.

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

FIRE

EC-1461

[VG33ER]

WITH CONSULT-II

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

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 5 seconds.

Start engine again and drive at 1,500 to 3,000 rpm for at least 3
minutes.
Hold the accelerator pedal as steady as possible.

NOTE:
Refer to the freeze frame data for the test driving condi-
tions.

If 1st trip DTC is detected, go to

EC-1461, "Diagnostic Proce-

dure"

NOTE:
If 1st trip DTC is not detected during above procedure, performing the following procedure is advised.
1.

Turn ignition switch OFF and wait at least 10 seconds.

Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain
time. Refer to the table below.
Hold the accelerator pedal as steady as possible.

The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-
ditions should be satisfied at the same time.

The time to driving varies according to the engine speed in the freeze frame data.

WITH GST

Follow the procedure “WITH CONSULT-II”.

Diagnostic Procedure

UBS00DWT

CHECK FOR INTAKE AIR LEAK

Start engine and run it at idle speed.

Listen for the sound of the intake air leak.

OK or NG

>> GO TO 2.

>> Discover air leak location and repair.

CHECK FOR EXHAUST SYSTEM CLOGGING

Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.

OK or NG

>> GO TO 3.

>> Repair or replace it.

SEF213Y

Engine speed

Engine speed in the freeze frame data

± 400 rpm

Vehicle speed

Vehicle speed in the freeze frame data

± 10 km/h (6 MPH)

Engine coolant temperature
(T) condition

When the freeze frame data shows lower than 70

°C (158 °F),

T should be lower than 70

°C (158 °F).

When the freeze frame data shows higher than or equal to 70

°C (158 °F),

T should be higher than or equal to 70

°C (158 °F).

Engine speed

Time

Around 1,000 rpm

Approximately 10 minutes

Around 2,000 rpm

Approximately 5 minutes

More than 3,000 rpm

Approximately 3.5 minutes

EC-1462

[VG33ER]

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

FIRE

PERFORM POWER BALANCE TEST

With CONSULT-II

Perform “POWER BALANCE” in “ACTIVE TEST” mode.

Is there any cylinder which does not produce a momentary
engine speed drop?

Without CONSULT-II

When disconnecting each injector harness connector one at a time,
is there any cylinder which does not produce a momentary engine
speed drop?

Yes or No

Yes

>> GO TO 4.

>> GO TO 7.

CHECK INJECTOR

Does each injector make an operating sound at idle?

Yes or No

Yes

>> GO TO 5.

>> Check injector(s) and circuit(s). Refer to

EC-1716,

"INJECTOR CIRCUIT"

SEF070Y

AEC646A

MEC703B

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