Nissan Juke F15. Manual - part 385

P0420 THREE WAY CATALYST FUNCTION

EC-353

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

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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.

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 3 seconds, and check whether spark is

generated between the spark plug and the grounded metal por-

tion.

CAUTION:

• Do not approach to the spark plug and the ignition coil

within 50 cm (19.7 in). Be careful not to get an electrical

shock while checking, because the electrical discharge

voltage becomes 20 kV or more.

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

NOTE:

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

functioning.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> 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 about 3 seconds, and recheck whether spark is generated between the spark plug and

the grounded metal portion.

Is the inspection result normal?

YES

>> GO TO 8.

NO

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

EC-554, "Diagnosis Procedure"

.

8.

CHECK SPARK PLUG

Check the initial spark plug for fouling, etc. Refer to 

EM-25, "Inspec-

tion"

.

Is the inspection result normal?

YES

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

spark plug type, refer to 

EM-25, "Inspection"

.

NO

>> Repair or clean spark plug. Refer to 

EM-60, "Exploded

View"

. Then 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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

EM-24, "Removal

and Installation"

.

Spark should be generated.

JMBIA0066GB

Spark should be generated.

SEF156I

Spark should be generated.

EC-354

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P0420 THREE WAY CATALYST FUNCTION

10.

PERFORM DTC CONFIRMATION PROCEDURE

1. Replace three way catalyst (manifold). Refer to 

EM-34, "2WD : Removal and Installation"

 (2WD models)

or 

EM-37, "AWD : Removal and Installation"

 (AWD models).

2. Perform DTC confirmation procedure. Refer to 

EC-350, "DTC Logic"

.

Is DTC P0420 detected again?

YES

>> Replace fuel injector. Refer to 

EM-54, "Removal and Installation"

.

NO

>> INSPECTION END

P0441 EVAP CONTROL SYSTEM

EC-355

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

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P0441 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000012197895

DTC DETECTION LOGIC

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.

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

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.
Will CONSULT be used?

YES

>> GO TO 2.

NO

>> GO TO 5.

JSBIA0416GB

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0441

EVAP PURG FLOW/MON
(EVAP control system incor-
rect purge flow)

EVAP control system does not operate 
properly, EVAP control system has a leak 
between intake manifold and EVAP control 
system pressure sensor.

• EVAP canister purge volume control sole-

noid valve stuck closed

• EVAP control system pressure sensor and 

the circuit

• Loose, disconnected or improper connection 

of rubber tube

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

noid valve circuit

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

EC-356

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P0441 EVAP CONTROL SYSTEM

2.

PERFORM DTC CONFIRMATION PROCEDURE-I

WITH CONSULT

TESTING CONDITION:

Always perform test at a temperature of 5

°C (41°F) or more.

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 WORK SUPPORT” mode of

“ENGINE” using CONSULT.

7. Touch “START”.
Is “COMPLETED” displayed on CONSULT screen?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-II

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

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

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

If “TESTING” does not change for a long time, retry from step 2.
Is “COMPLETED” displayed on CONSULT screen?

YES

>> GO TO 4.

NO

>> Perform DTC CONFIRMATION PROCEDURE again. GO TO 2.

4.

PERFORM DTC CONFIRMATION PROCEDURE-III

Touch “SELF-DIAG RESULTS”.
Which is displayed on CONSULT screen?

OK

>> INSPECTION END

NG

>> Proceed to 

EC-357, "Diagnosis Procedure"

.

5.

PERFORM COMPONENT FUNCTION CHECK

WITH GST

Perform component function check. Refer to 

EC-356, "Component Function Check"

.

NOTE:

Use component function check 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.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-357, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000012197896

1.

PERFORM COMPONENT FUNCTION CHECK

1. Lift up drive wheels.

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

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

Selector lever

Suitable position

VHCL SPEED SE

32 - 120 km/h (20 - 75 MPH)

ENG SPEED

500 - 3,300 rpm

B/FUEL SCHDL

1.0 - 6.5 msec

COOLAN TEMP/S

More than 0

°C (32°F)