Nissan Frontier. Manual - part 663

 

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Nissan Frontier. Manual - part 663

 

 

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-1223

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

C

D

E

F

G

H

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A

EC

N

P

O

Check air passage continuity of EVAP canister purge volume control

solenoid valve under the following conditions.

EVAP CANISTER VENT CONTROL VALVE

 With CONSULT

1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portionof B EVAP canister vent control valve for being

rusted.

If NG, go to next step.

3. Reconnect harness connectors disconnected.
4. Turn ignition switch ON.

5. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
6. Check air passage continuity and operation delay time.

Check new O-ring is installed properly.

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.

If OK, go to next step.

7. Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.
8. Perform step 6 again.
9. If NG, replace EVAP canister vent control valve.

 Without CONSULT

1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B of EVAP canister vent control valve for being

rusted.

Condition

Air passage continuity 

between (A) and (B)

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB2059E

PBIB1033E

Condition VENT CONTROL/V

Air passage continuity

 between (A) and (B)

ON

No

OFF

Yes

PBIB1033E

EC-1224

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

3. Check air passage continuity and operation delay time under the

following conditions.

Check new O-ring is installed properly.

Operation takes less than 1 second.

If NG, go to next step.

4. Clean the air passage (portion A to B) of EVAP canister vent control valve using an air blower.
5. Perform step 3 again.
6. If NG, replace EVAP canister vent control valve.

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.

Condition

Air passage continuity

 between (A) and (B)

12V direct current supply between
 terminals 1 and 2

No

OFF

Yes

PBIB1034E

PBIB3641E

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-1225

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

C

D

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EC

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P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Description

INFOID:0000000009481863

SYSTEM DESCRIPTION 

*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.

This system controls flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass pas-

sage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP

canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the

ECM. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is

determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor

from the EVAP canister is regulated as the air flow changes.

COMPONENT DESCRIPTION

The EVAP canister purge volume control solenoid valve uses a ON/

OFF duty to control the flow rate of fuel vapor from the EVAP canis-

ter. The EVAP canister purge volume control solenoid valve is

moved by ON/OFF pulses from the ECM. The longer the ON pulse,

the greater the amount of fuel vapor that will flow through the valve.

On Board Diagnosis Logic

INFOID:0000000009481864

DTC Confirmation Procedure

INFOID:0000000009481865

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.

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

1

EVAP canister 
purge flow control

EVAP canister purge vol-
ume control solenoid valve

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Battery

Battery voltage*

1

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Fuel tank temperature sensor

Fuel temperature in fuel tank

Wheel sensor

Vehicle speed*

2

PBIB2057E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0444
0444

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

EC-1226

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

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

TESTING CONDITION:

Before performing the following procedure, confirm battery voltage is more than 11V at idle.

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

2. Check 1st trip DTC.

3. If 1st trip DTC is detected, go to 

EC-1226, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009481866

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 voltage between EVAP canister purge volume control

solenoid valve terminal 2 and ground with CONSULT or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E2, F32

• 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 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.

3. Check harness continuity between ECM terminal 45 and EVAP canister purge volume control solenoid

valve terminal 1. Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK (With CONSULT)>>GO TO 4.

OK (Without CONSULT)>>GO TO 5.

NG

>> 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

BBIA0550E

Voltage: Battery voltage

PBIB2605E

Continuity should exist.

 

 

 

 

 

 

 

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