Nissan Quest E52. Manual - part 520

EC-290

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

8.

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 9.

NO

>> Clean the rubber tube using an air blower.

9.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check EVAP canister vent control valve. Refer to 

EC-297, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace EVAP canister vent control valve. Refer to 

FL-16, "Exploded View"

.

10.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

Remove EVAP canister with EVAP canister vent control valve and
EVAP control system pressure sensor attached. Refer to 

FL-16,

"Exploded View"

.

Does water drain from the EVAP canister?

YES

>> GO TO 11.

NO

>> Check intermittent incident. Refer to 

GI-42, "Intermittent

Incident"

.

11.

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-42, "Intermittent Incident"

.

NO

>> GO TO 12.

12.

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-16, "Exploded View"

.

Component Inspection

INFOID:0000000009651127

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.

JMBIA1134GB

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-291

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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.

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 

FL-16, "Exploded View"

.

Condition

(PURG VOL C/V value)

Air passage continuity 

between (A) and (B)

100%

Existed

0%

Not existed

PBIB2058E

Condition

Air passage continuity 

between (A) and (B)

12 V direct current supply between 
terminals 1 and 2

Existed

No supply

Not existed

PBIB2059E

EC-292

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

DTC Logic

INFOID:0000000009651128

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CONDITIONING

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

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

>> Proceed to 

EC-292, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651129

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 3.

NO

>> GO TO 2.

2.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

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 so-

lenoid valve

P0445

EVAP canister purge volume 
control solenoid valve circuit 
shorted

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

• Harness or connectors

(The solenoid valve circuit is shorted.)

• EVAP canister purge volume control so-

lenoid valve

EVAP canister purge volume control 

solenoid valve

Ground

Voltage

Connector

Terminal

F30

1

Ground

Battery voltage

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-293

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

Disconnect IPDM E/R harness connector.

3.

Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
IPDM E/R harness connector.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

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.

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

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

4.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

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

>> Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

NO

>> GO TO 5.

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Check EVAP canister purge volume control solenoid valve. Refer to 

EC-293, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

NO

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

FL-16, "Exploded View"

.

Component Inspection

INFOID:0000000009651130

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.

EVAP canister purge volume 

control solenoid valve

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F30

1

E10

10

Existed

EVAP canister purge volume con-

trol solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F30

2

F7

42

Existed