Nissan March K13. Manual - part 189

P0420 THREE WAY CATALYST FUNCTION

EC-217

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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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). Refer to 

EM-41, "Exploded View"

. For spark plug

type, refer to 

EM-93, "Spark Plug"

.

10.

CHECK FUEL INJECTOR

1.

Turn ignition switch OFF.

2.

Remove fuel injector assembly.
Refer to 

EM-37, "Exploded View"

.

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

3.

Disconnect all ignition coil harness connectors.

4.

Reconnect all fuel injector harness connectors disconnected.

5.

Turn ignition switch ON.

Does fuel drip from fuel injector?

YES

>> GO TO 11.

NO

>> Replace the fuel injector(s) from which fuel is dripping. Refer to 

EM-37, "Exploded View"

.

11.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

Is the trouble fixed?

YES

>> INSPECTION END

NO

>> Replace three way catalyst assembly. Refer to 

EM-32, "Exploded View"

.

Spark should be generated.

EC-218

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

DTC Logic

INFOID:0000000005989301

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 13 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-218, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005989302

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

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

3.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0444

EVAP canister purge volume 
control solenoid valve circuit 
open

An excessively low voltage signal is sent to 
ECM through the valve

• Harness or connectors

(The solenoid valve circuit is open or 
shorted.)

• EVAP canister purge volume control 

solenoid valve

EVAP canister purge volume control solenoid valve

Ground

Voltage

Connector

Terminal

F32

1

Ground

Battery voltage

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-219

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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3.

Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 4.
YES-2 >> Without CONSULT-III: GO TO 5.
NO

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

4.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.

Does engine speed vary according to the valve opening?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Check evap canister purge volume control solenoid valve. Refer to 

EC-219, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace EVAP canister purge volume control solenoid valve. Refer to 

EM-29, "WITH EGR CON-

TROL VALVE : Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000005989303

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4.

Turn ignition switch ON.

5.

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

6.

Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG
VOL C/V” opening and check air passage continuity of EVAP
canister purge volume control solenoid valve under the following
conditions.

Without CONSULT-III

EVAP canister purge volume control solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F32

2

F7

9

Existed

Condition

(PURG VOL C/V value)

Air passage continuity 

between (A) and (B)

100%

Existed

0%

Not existed

PBIA9668J

EC-220

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve harness connector.

3.

Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4.

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following
conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP canister purge volume control solenoid valve. Refer to 

EM-29, "WITH EGR CON-

TROL VALVE : Exploded View"

.

Condition

Air passage continuity 

between (A) and (B)

12 V direct current supply between 
terminals 1 and 2

Existed

No supply

Not existed