Infiniti FX35, FX50 (S51). Manual - part 679

P0222, P0223, P2132, P2133 TP SENSOR

EC-257

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunctioning electric throttle control actuator.

2.

Go to 

EC-257, "Special Repair Requirement"

.

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005236857

1.

CHECK THROTTLE POSITION (TP) SENSOR

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Perform 

EC-25, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

4.

Turn ignition switch ON.

5.

Set selector lever position to D. 

6.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunctioning electric throttle control actuator.

2.

Go to 

EC-257, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005236858

1.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-25, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.

PERFORM IDLE AIR VOLUME LEARNING

ECM

Condition

Voltage (V)

Connector

+

–

Terminal

Terminal

F101

30

[TP sensor 1 (bank 1)]

40

Accelerator pedal: Fully released

More than 0.36

Accelerator pedal: Fully depressed

Less than 4.75

31

[TP sensor 1 (bank 2)]

48

Accelerator pedal: Fully released

More than 0.36

Accelerator pedal: Fully depressed

Less than 4.75

34

[TP sensor 2 (bank 1)]

40

Accelerator pedal: Fully released

Less than 4.75

Accelerator pedal: Fully depressed

More than 0.36

35

[TP sensor 2 (bank 2)]

48

Accelerator pedal: Fully released

Less than 4.75

Accelerator pedal: Fully depressed

More than 0.36

EC-258

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0222, P0223, P2132, P2133 TP SENSOR

Refer to 

EC-25, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE

EC-259

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE

DTC Logic

INFOID:0000000005236859

DTC DETECTION LOGIC

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

The misfire detection logic consists of the following two conditions.

1.

One Trip Detection Logic (Three Way Catalyst Damage) 
On the 1st trip when 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.

2.

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 in any one cylinder or in multiple cylinders.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE-I

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Restart engine and let it idle for approximately 15 minutes.

6.

Check 1st trip DTC.

Sensor

Input signal to ECM

ECM function

CKP sensor

Engine speed

On board diagnosis of misfire

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0300

Multiple cylinder misfires detected

Multiple cylinder misfire.

• Improper spark plug
• Insufficient compression
• Incorrect fuel pressure
• The fuel injector circuit is open or shorted
• Fuel injector
• Intake air leak
• The ignition signal circuit is open or short-

ed

• Lack of fuel
• Signal plate
• Air fuel ratio (A/F) 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.

EC-260

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE

Is 1st trip DTC detected?

YES

>> Go to 

EC-260, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-II

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Start engine and drive the vehicle under 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.
Similar conditions to (1st trip) Freeze Frame Data mean that the following conditions should be satisfied at
the same time.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when
driving.

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

5.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-260, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005236860

1.

CHECK FOR INTAKE AIR LEAK AND PCV HOSE

1.

Start engine and run it at idle speed.

2.

Listen for the sound of the intake air leak.

3.

Check PCV hose connection.

Is intake air leak detected?

YES

>> Discover air leak location and repair.

NO

>> GO TO 2.

2.

CHECK FOR EXHAUST SYSTEM CLOGGING

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

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 3.
YES-2 >> Without CONSULT-III: GO TO 4.
NO

>> Repair or replace malfunctioning part.

3.

PERFORM POWER BALANCE TEST

With CONSULT-III

1.

Start engine.

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)

Basic fuel schedule

Basic fuel schedule in freeze frame data 

×

 (1 

±

 0.1)

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

Approx. 10 minutes

Around 2,000 rpm

Approx. 5 minutes

More than 3,000 rpm

Approx. 3.5 minutes