Nissan Pathfinder. Manual - part 498

EC-298

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

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

YES

>> INSPECTION END

NO

>> Proceed to 

EC-299, "Diagnosis Procedure"

.

4.

PERFORM DTC CONFIRMATION PROCEDURE A

With GST

1. Turn ignition switch ON.

2. Set voltmeter probes to ECM harness connector terminals.

3. Start engine and wait at least 60 seconds.

4. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-299, "Diagnosis Procedure"

.

NO

>> GO TO 5.

5.

PERFORM DTC CONFIRMATION PROCEDURE B

With GST

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 20 seconds.

6. Check 1st trip DTC.
Is 1st trip DTC displayed?

YES

>> Proceed to 

EC-299, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009178207

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY

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 2.

NO

>> Perform the trouble diagnosis for power supply circuit.

2.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

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

ECM harness connector.

ECM

Voltage (V)

Connector

+

–

Terminal

E16

111

120

3.1 - 4.0

EVAP canister purge volume control 

solenoid valve

Ground

Voltage

Connector

Terminal

F16

1

Ground

Battery voltage

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-299

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4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

2. Check that water is not inside connectors.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-18, "Removal and Installation"

.

4.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Check EVAP control system pressure sensor. Refer to 

EC-315, "Component Inspection"

.

Is the inspection result normal?

YES-1 >> With CONSULT: GO TO 5.

YES-2 >> Without CONSULT: GO TO 6.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-6, "Removal and Installation"

.

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT

1. Turn ignition switch OFF.

2. Reconnect harness connectors disconnected.

3. Start engine.

4. Perform “PURG VOL C/V” in “ACTIVE TEST” mode with CONSULT. Check that engine speed varies

according to the valve opening.

Does engine speed vary according to the valve opening?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Check EVAP canister purge volume control solenoid valve. Refer to 

EC-301, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

EC-14, "ENGINE CON-

TROL SYSTEM : Component Parts Location"

.

7.

CHECK RUBBER TUBE FOR CLOGGING

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

2. Check the rubber tube for clogging.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Clean the rubber tube using an air blower.

8.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check EVAP canister vent control valve. Refer to 

EC-307, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace EVAP canister vent control valve. Refer to 

FL-18, "Removal and Installation"

.

9.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

EVAP canister purge volume con-

trol solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F16

2

F51

42

Existed

EC-300

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Remove EVAP canister with EVAP canister vent control valve and

EVAP control system pressure sensor attached. Refer to 

FL-18,

"Removal and Installation"

.

Does water drain from the EVAP canister?

YES

>> GO TO 10.

NO

>> Check intermittent incident. Refer to 

GI-49, "Intermittent

Incident"

.

10.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor

attached.

The weight should be less than 2.1 kg (4.6 lb).
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister. Refer to 

FL-18, "Removal and Installation"

.

Component Inspection

INFOID:0000000009178208

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT

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 C/V” in “ACTIVE TEST” mode with CONSULT.

6. Touch “Qd” and “Qu” on CONSULT 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

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.

JMBIA1134GB

Condition

(PURG VOL C/V value)

Air passage continuity 

between  

and 

100%

Existed

0%

Not existed

PBIB2058E

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-301

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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 

EC-14, "ENGINE CON-

TROL SYSTEM : Component Parts Location"

.

Condition

Air passage continuity 

between  

and 

12 V direct current supply between 
terminals 1 and 2

Existed

No supply

Not existed

PBIB2059E