Nissan Pathfinder (2010 year). Manual - part 324

EC-684

< COMPONENT DIAGNOSIS >

[VK56DE]

P0222, P0223 TP SENSOR

OK or NG

OK

>> GO TO 5.

NG

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

5.

CHECK ACCELERATOR PEDAL POSITION SENSOR

Refer to 

EC-860, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 6.

6.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace the accelerator pedal assembly.

2. Perform 

EC-511, "Accelerator Pedal Released Position Learning"

.

3. Perform 

EC-511, "Throttle Valve Closed Position Learning"

.

4. Perform 

EC-511, "Idle Air Volume Learning"

.

>>

INSPECTION END

7.

CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between electric throttle control actuator terminal 4 and ECM terminal 66.

 Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 8.

NG

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

8.

CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 1.

Refer to Wiring Diagram.

2. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 9.

NG

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

9.

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-685, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> GO TO 10.

10.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.

2. Perform 

EC-511, "Throttle Valve Closed Position Learning"

.

3. Perform 

EC-511, "Idle Air Volume Learning"

.

>>

INSPECTION END

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

Continuity should exist.

Continuity should exist.

2010 Pathfinder

P0222, P0223 TP SENSOR

EC-685

< COMPONENT DIAGNOSIS >

[VK56DE]

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>>

INSPECTION END

Component Inspection

INFOID:0000000005257649

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Perform 

EC-511, "Throttle Valve Closed Position Learning"

.

3. Turn ignition switch ON.
4. Shift selector lever to the D position. 
5. Check voltage between ECM terminals 50 (TP sensor 1 signal)

and ground, 69 (TP sensor 2 signal) and ground under the fol-

lowing conditions.

6. If NG, replace electric throttle control actuator and go to the next

step.

7. Perform 

EC-511, "Throttle Valve Closed Position Learning"

.

8. Perform 

EC-511, "Idle Air Volume Learning"

.

Terminal

Accelerator pedal

Voltage

50
(Throttle position sensor 1)

Fully released

More than 0.36V

Fully depressed

Less than 4.75V

69
 (Throttle position sensor 2)

Fully released

Less than 4.75V

Fully depressed

More than 0.36V

PBIB1530E

2010 Pathfinder

EC-686

< COMPONENT DIAGNOSIS >

[VK56DE]

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MIS-
FIRE

On Board Diagnosis Logic

INFOID:0000000005257650

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-

shaft position (CKP) sensor (POS) 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

overheating, 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

illuminate when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP

sensor signal every 1,000 engine revolutions.

A misfire malfunction can be detected in any one cylinder or in multiple cylinders.

DTC Confirmation Procedure

INFOID:0000000005257651

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-

ing.

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

before conducting the next step.

a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.

Sensor

Input signal to ECM

ECM function

Crankshaft position sensor (POS)

Engine speed

On board diagnosis of misfire

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0300
0300

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 leakage
• The ignition signal circuit is open or shorted
• Lack of fuel
• Signal plate
• Air fuel ratio (A/F) sensor 1
• Incorrect PCV hose connection

P0301
0301

No.1 cylinder misfire detected

No. 1 cylinder misfires.

P0302
0302

No. 2 cylinder misfire detected

No. 2 cylinder misfires.

P0303
0303

No. 3 cylinder misfire detected

No. 3 cylinder misfires.

P0304
0304

No. 4 cylinder misfire detected

No. 4 cylinder misfires.

P0305
0305

No. 5 cylinder misfire detected

No. 5 cylinder misfires.

P0306
0306

No. 6 cylinder misfire detected

No. 6 cylinder misfires.

P0307
0307

No. 7 cylinder misfire detected

No. 7 cylinder misfires.

P0308
0308

No. 8 cylinder misfire detected

No. 8 cylinder misfires.

2010 Pathfinder

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

EC-687

< COMPONENT DIAGNOSIS >

[VK56DE]

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c. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Restart engine and let it idle for approximately 15 minutes.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to 

EC-687, "Diagnosis Procedure"

.

NOTE:

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

a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
d. 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.

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

Diagnosis Procedure

INFOID:0000000005257652

1.

CHECK FOR INTAKE AIR LEAKAGE AND PCV HOSE

1. Start engine and run it at idle speed.

2. Listen for the sound of the intake air leakage.

3. Check PCV hose connection.
OK or NG

OK

>> GO TO 2.

NG

>> Discover air leakage location and repair.

2.

CHECK FOR EXHAUST SYSTEM CLOGGING

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

OK

>> GO TO 3.

NG

>> Repair or replace malfunctioning part.

3.

PERFORM POWER BALANCE TEST

 

With CONSULT-III

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

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

2010 Pathfinder

EC-688

< COMPONENT DIAGNOSIS >

[VK56DE]

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

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

 

Without CONSULT-III

When disconnecting each fuel 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.

No

>> GO TO 7.

4.

CHECK FUEL INJECTOR

Does each fuel injector make an operating sound at idle?
Yes or No

 Yes

>> GO TO 5.

No

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

EC-875,

"Diagnosis Procedure"

.

5.

CHECK FUNCTION OF IGNITION COIL-I

CAUTION:

Perform the following procedure in a place with no combustible objects and good ventilation.

1. Turn ignition switch OFF.

2. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pres-

sure.

NOTE:

Do not use CONSULT-III to release fuel pressure, or fuel pres-

sure applies again during the following procedure.

3. Start engine.

4. After engine stalls, crank it 2 or 3 times to release all fuel pres-

sure.

5. Turn ignition switch OFF.

6. Remove all ignition coil harness connectors to avoid the electri-

cal discharge from the ignition coils.

7. Remove ignition coil and spark plug of the cylinder to be

checked.

8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.

9. Connect spark plug and harness connector to ignition coil.

BBIA0374E

PBIB1986E

ALBIA0351ZZ

2010 Pathfinder

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

EC-689

< COMPONENT DIAGNOSIS >

[VK56DE]

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10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm

between the edge of the spark plug and grounded metal portion

as shown in the figure.

11. Crank engine for approximately 3 seconds, and check whether

spark is generated between the spark plug and the grounded

metal portion.

CAUTION:

• Never place the spark plug and the ignition coil within 50

cm each other. Be careful not to get an electrical shock

while checking, because the electrical discharge voltage

becomes 20 kV or more.

• It might damage the ignition coil if the gap of more than 17 mm is made.

NOTE:

When the gap is less than 13 mm, spark might be generated even if the coil is malfunctioning.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 6.

6.

CHECK FUNCTION OF IGNITION COIL-II

1. Turn ignition switch OFF.

2. Disconnect spark plug and connect a non-malfunctioning spark plug.

3. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark

plug and the grounded metal portion.

OK or NG

OK

>> GO TO 7.

NG

>> Check ignition coil, power transistor and their circuits. Refer to 

EC-881, "Diagnosis Procedure"

.

7.

CHECK SPARK PLUG

Check the initial spark plug for fouling, etc.
OK or NG

OK

>> Replace malfunctioning spark plug(s) with standard type

one(s). For spark plug type, refer to 

EM-244, "Standard

and Limit"

.

NG

>> 1. Repair or clean spark plug.

2. GO TO 8.

8.

CHECK FUNCTION OF IGNITION COIL-III

1. Reconnect the initial spark plugs.

2. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark

plug and the grounded portion.

OK or NG

OK

>>

INSPECTION END

NG

>> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to 

EM-

244, "Standard and Limit"

.

9.

CHECK COMPRESSION PRESSURE

Check compression pressure. Refer to 

EM-159, "Compression Pressure"

.

OK or NG

Spark should be generated.

PBIB2325E

Spark should be generated.

SEF156I

Spark should be generated.

2010 Pathfinder

EC-690

< COMPONENT DIAGNOSIS >

[VK56DE]

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

OK

>> GO TO 10.

NG

>> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.

10.

CHECK FUEL PRESSURE

1. Install all removed parts.

2. Release fuel pressure to zero. Refer to 

EC-958, "Fuel Pressure Check"

.

3. Install fuel pressure gauge and check fuel pressure. Refer to 

EC-958, "Fuel Pressure Check"

.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.

• Fuel pump and circuit (Refer to 

EC-878, "Diagnosis Procedure"

.)

• Fuel pressure regulator (Refer to 

EC-958, "Fuel Pressure Check"

.)

• Fuel lines

• Fuel filter for clogging

>> Repair or replace malfunctioning part.

12.

CHECK IGNITION TIMING

Check the following items. Refer to 

EC-506, "Basic Inspection"

.

OK or NG

OK

>> GO TO 13.

NG

>> Follow the 

EC-506, "Basic Inspection"

.

13.

CHECK AIR FUEL RATIO SENSOR 1 INPUT SIGNAL FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect air fuel ratio (A/F) sensor 1 harness connector.

3. Disconnect ECM harness connector.

4. Check harness continuity between A/F sensor 1 terminals and ECM terminals as per the following.

Refer to Wiring Diagram.

At idling: Approximately 350 kPa (3.57 kg/cm

2

, 51 psi)

Items

Specifications

Target idle speed

650 

±

 50 rpm (in P or N position)

Ignition timing

15 

±

 5

°

BTDC (in P or N position)

ALBIA0360ZZ

1.

A/F sensor 1 (bank 2) harness connector 2.

A/F sensor 1 (bank 2)

3.

A/F sensor 1 (bank 1)

4.

A/F sensor 1 (bank 1) harness connector
: Vehicle front

2010 Pathfinder

P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE

EC-691

< COMPONENT DIAGNOSIS >

[VK56DE]

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5. Check harness continuity between the following terminals and ground.

Refer to Wiring Diagram.

6. Also check harness for short to power.
OK or NG

OK

>> GO TO 14.

NG

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

14.

CHECK A/F SENSOR 1 HEATER

Refer to 

EC-589, "Component Inspection"

.

OK or NG

OK

>> GO TO 16.

NG

>> GO TO 15.

15.

REPLACE A/F SENSOR 1

Replace malfunctioning A/F sensor 1.

CAUTION:

• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a

hard surface such as a concrete floor; use a new one.

• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [Commercial service tool (J-43897-18 or J-43897-12)] and approved Anti-seize Lubricant

(Commercial service tool).

>>

INSPECTION END

16.

CHECK MASS AIR FLOW SENSOR

 

With CONSULT-III

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

 

With GST

Check mass air flow sensor signal in Service $01 with GST.

OK or NG

OK

>> GO TO 17.

A/F sensor 1 terminal

ECM terminal

Bank 1

1

35

2

56

Bank 2

1

16

2

75

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

1

35

1

16

2

56

2

75

Continuity should not exist.

3.0 - 9.0 g·m/sec:

At idling

9.0 - 28.0 g·m/sec:

At 2,500 rpm

3.0 - 9.0 g·m/sec:

At idling

9.0 - 28.0 g·m/sec:

At 2,500 rpm

2010 Pathfinder