Nissan Pathfinder (2010 year). Manual - part 267

EC-228

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0420, P0430 THREE WAY CATALYST FUNCTION

NG

>> Repair or replace.

4.

CHECK IGNITION TIMING

Check the following items. Refer to 

EC-20, "Basic Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Follow the 

EC-20, "Basic Inspection"

.

5.

CHECK FUEL INJECTOR

1. Stop engine and then turn ignition switch ON.

2. Check voltage between ECM terminals 21, 22, 23, 40, 41, 42

and ground with CONSULT-III or tester.

Refer to Wiring Diagram for FUEL INJECTOR, 

EC-438, "Wiring

Diagram"

.

OK or NG

OK

>> GO TO 6.

NG

>> Perform 

EC-399, "Diagnosis Procedure"

.

6.

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 (No.48) in IPDM E/R to release fuel

pressure.

NOTE:

Never 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 two or three times to release all fuel

pressure.

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 five seconds or more to remove combustion gas in the cylinder.

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

10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -

0.66 in) between the edge of the spark plug and grounded metal

portion as shown in the figure.

11. Crank engine for about three seconds, and check whether spark

is generated between the spark plug and the grounded metal

portion.

CAUTION:

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

50 cm (19.7 in) each other. Be careful not to get an electri-

cal shock while checking, because the electrical dis-

charge voltage becomes 20 kV or more.

Items

Specifications

Target idle speed

625 

±

 50 rpm (in P or N position)

Ignition timing

15 

±

 5

°

 BTDC (in P or N position)

Battery voltage should exist.

PBIB1172E

Spark should be generated.

BBIA0534E

JMBIA0066GB

2010 Pathfinder

P0420, P0430 THREE WAY CATALYST FUNCTION

EC-229

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• It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is made.

NOTE:

When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-

functioning.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 7.

7.

CHECK FUNCTION OF IGNITION COIL-II

1. Turn ignition switch OFF.

2. Disconnect spark plug and connect a known-good 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 8.

NG

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

EC-407

.

8.

CHECK SPARK PLUG

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

OK

>> Replace spark plug(s) with standard type one(s). For

spark plug type, refer to 

EM-17, "Removal and Installa-

tion"

.

NG

>> 1. Repair or clean spark plug.

2. GO TO 9.

9.

CHECK FUNCTION OF IGNITION COIL-III

1. Reconnect the initial spark plugs.

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

the grounded portion.

OK or NG

OK

>>

INSPECTION END

NG

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

EM-17, "Removal

and Installation"

.

10.

CHECK FUEL INJECTOR

1. Turn ignition switch OFF.

2. Remove fuel injector assembly.

Refer to 

EM-46, "Removal and Installation"

.

Keep fuel hose and all fuel injectors connected to fuel tube.

3. Reconnect all fuel injector harness connectors.

4. Disconnect all ignition coil harness connectors.

5. Turn ignition switch ON.

Check that fuel does not drip from fuel injector.

OK or NG

OK (Does not drip.)>>GO TO 11.

NG (Drips.)>>Replace the fuel injector(s) from which fuel is dripping.

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

Spark should be generated.

SEF156I

Spark should be generated.

2010 Pathfinder

EC-230

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0420, P0430 THREE WAY CATALYST FUNCTION

Trouble is fixed.>>

INSPECTION END

Trouble is not fixed.>>Replace three way catalyst (manifold).

2010 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-231

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P0441 EVAP CONTROL SYSTEM

System Description

INFOID:0000000005257210

NOTE:

If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform

trouble diagnosis for other DTC.

In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions.

Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP

canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP con-

trol system pressure sensor to intake manifold vacuum.

On Board Diagnosis Logic

INFOID:0000000005257211

Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow

are adequate. If not, a malfunction is determined.

DTC Confirmation Procedure

INFOID:0000000005257212

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

PBIB3640E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0441
0441

EVAP control system in-
correct purge flow

EVAP control system does not operate proper-
ly, EVAP control system has a leak between in-
take manifold and EVAP control system 
pressure sensor.

• EVAP canister purge volume control so-

lenoid valve stuck closed

• EVAP control system pressure sensor 

and the circuit

• Loose, disconnected or improper con-

nection of rubber tube

• Blocked rubber tube
• Cracked EVAP canister
• EVAP canister purge volume control so-

lenoid valve circuit

• Accelerator pedal position sensor
• Blocked purge port
• EVAP canister vent control valve
• Drain filter

2010 Pathfinder

EC-232

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Always perform test at a temperature of 5

°

C (41

°

F) or more.

 WITH CONSULT-III

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. Start engine and let it idle for at least 70 seconds.

6. Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC CONFIRMATION” mode with CON-

SULT-III.

7. Touch “START”.

If “COMPLETED” is displayed, go to step 7.

8. When the following conditions are met, “TESTING” will be displayed on the CONSULT-III screen. Maintain

the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)

If “TESTING” does not change for a long time, retry from step 2.

9. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to 

EC-

232, "Diagnosis Procedure"

.

Overall Function Check

INFOID:0000000005257213

Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring.

During this check, a 1st trip DTC might not be confirmed.

 WITH GST

1. Lift up drive wheels.

2. Start engine (TCS switch or VDC switch OFF) and warm it up to normal operating temperature.

3. Turn ignition switch OFF, wait at least 10 seconds.

4. Turn ignition switch ON.

5. Turn ignition switch OFF, wait at least 10 seconds.

6. Start engine and wait at least 70 seconds.

7. Set voltmeter probes to ECM terminals 32 (EVAP control system

pressure sensor signal) and ground.

8. Check EVAP control system pressure sensor value at idle speed

and note it.

9. Establish and maintain the following conditions for at least 1

minute.

10. Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-

sured at step 6) for at least 1 second.

11. If NG, go to 

EC-232, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005257214

1.

CHECK EVAP CANISTER

Selector lever

Suitable position

VHCL SPEED SE

32 - 120 km/h (20 - 75 MPH)

ENG SPEED

500 - 3,000 rpm

B/FUEL SCHDL

1.3 - 9.0 msec

COOLAN TEMP/S

More than 0 

°

C (32 

°

F)

Air conditioner switch

ON

Headlamp switch

ON

Rear window defogger switch

ON

Engine speed

Approx. 3,000 rpm

Gear position

Any position other than P, N or R

PBIB1109E

2010 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-233

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1. Turn ignition switch OFF.

2. Check EVAP canister for cracks.
OK or NG

OK (With CONSULT-III)>>GO TO 2.

OK (Without CONSULT-III)>>GO TO 3.

NG

>> Replace EVAP canister.

2.

CHECK PURGE FLOW

 

With CONSULT-III

1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-

vice port and install vacuum gauge. For the location of EVAP service port, refer to 

EC-45, "Description"

.

2. Start engine and let it idle.

3. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.

4. Rev engine up to 2,000 rpm.

5. Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG VOL CONT/V” opening and check vacuum

existence.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

3.

CHECK PURGE FLOW

 Without CONSULT-III

1. Start engine and warm it up to normal operating temperature.

2. Stop engine.

3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-

vice port and install vacuum gauge. For the location of EVAP service port, refer to 

EC-45, "Description"

.

4. Start engine and let it idle.

Do not depress accelerator pedal even slightly.

5. Check vacuum gauge indication before 60 seconds pass after starting engine.

6. Rev engine up to 2,000 rpm after 100 seconds pass after starting engine.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

4.

CHECK EVAP PURGE LINE

1. Turn ignition switch OFF.

2. Check EVAP purge line for improper connection or disconnection.

Refer to 

EC-45, "Description"

.

OK or NG

OK

>> GO TO 5.

NG

>> Repair it.

5.

CHECK EVAP PURGE HOSE AND PURGE PORT

PURG VOL CONT/V

Vacuum

100%

Should exist.

0%

Should not exist.

Vacuum should not exist.

Vacuum should exist.

2010 Pathfinder

EC-234

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0441 EVAP CONTROL SYSTEM

1. Disconnect purge hoses connected to EVAP service port (A)

and EVAP canister purge volume control solenoid valve (B).

2. Blow air into each hose and EVAP purge port (C).

3. Check that air flows freely.
OK or NG

OK (With CONSULT-III)>>GO TO 6.

OK (Without CONSULT-III)>>GO TO 7.

NG

>> Repair or clean hoses and/or purge port.

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 

With CONSULT-III

1. Start engine.

2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-

ies according to the valve opening.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-250, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid valve.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

2. Check connectors for water.

OK or NG

OK

>> GO TO 9.

NG

>> Replace EVAP control system pressure sensor.

9.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to 

EC-263, "DTC Confirmation Procedure"

 for DTC P0452, 

EC-267, "DTC Confirmation Procedure"

 for

P0453.
OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor.

10.

CHECK RUBBER TUBE FOR CLOGGING

1. Disconnect rubber tube connected to EVAP canister vent control valve.

SEF367U

SEF368U

Water should not exist.

2010 Pathfinder

P0441 EVAP CONTROL SYSTEM

EC-235

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2. Check the rubber tube for clogging.
OK or NG

OK

>> GO TO 11.

NG

>> Clean the rubber tube using an air blower.

11.

CHECK DRAIN FILTER

Refer to 

EC-235, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace drain filter.

12.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-253, "Component Inspection"

.

OK or NG

OK

>> GO TO 13.

NG

>> Replace EVAP canister vent control valve.

13.

CHECK EVAP PURGE LINE

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.

Refer to 

EC-45, "Description"

.

OK or NG

OK

>> GO TO 14.

NG

>> Replace it.

14.

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 15.

15.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000005257215

DRAIN FILTER

1. Check visually for insect nests in the drain filter air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Blow air into port A and check that it flows freely out of port B.
5. Block port B.
6. Blow air into port A and check that there is no leakage.
7. If NG, replace drain filter.

PBIB3641E

2010 Pathfinder