Nissan Frontier. Manual - part 664

 

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Nissan Frontier. Manual - part 664

 

 

P0444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

EC-1227

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

C

D

E

F

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A

EC

N

P

O

 With CONSULT

1. Reconnect all harness connectors disconnected.

2. Start engine.

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

according to the valve opening.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-1227, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

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

EM-142, "Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481867

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT

Check air passage continuity of EVAP canister purge volume control

solenoid valve under the following conditions.

 Without CONSULT

Check air passage continuity of EVAP canister purge volume control

solenoid valve under the following conditions.

Condition

(PURG VOL CONT/V value)

Air passage continuity 

between (A) and (B)

100%

Yes

0%

No

PBIB2058E

Condition

Air passage continuity 

between (A) and (B)

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB2059E

EC-1228

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

Component Description

INFOID:0000000009481868

The EVAP control system pressure sensor (2) detects pressure in

the purge line. The sensor output voltage to the ECM increases as

pressure increases.

• EVAP canister vent control valve (1)

• Drain filter (3)

• EVAP canister (4)

: Vehicle front

On Board Diagnosis Logic

INFOID:0000000009481869

If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-1256

.

DTC Confirmation Procedure

INFOID:0000000009481870

DTC CONFIRMATION PROCEDURE

NOTE:

Never remove fuel filler cap during 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.

With CONSULT>>GO TO 2.

Without CONSULT>>GO TO 5.

2.

PERFORM DTC CONFIRMATION PROCEDURE-1

With CONSULT

1. Start engine and let it idle for least 40 seconds.

NOTE:

Do not depress accelerator pedal even slightly.

ALBIA0514ZZ

PBIB3370E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0451
0451

EVAP control system 
pressure sensor perfor-
mance

ECM detects a sloshing signal from the EVAP 
control system pressure sensor

• Harness or connectors
• EVAP control system pressure sensor

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-1229

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

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

YES

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-2

With CONSULT

1. Select “EVAP DIAG READY” in “DATA MONITOR” mode of “ENGINE”.

2. Let it idle until “OFF” of “EVAP DIAG READY” changes to “ON”.

NOTE:

It will take at most 2 hours until “OFF” of “EVAP DIAG READY” changes to “ON”.

3. Turn ignition switch OFF and wait at least 90 minutes.

NOTE:

Never turn ignition switch ON during 90 minutes.

4. Turn ignition switch ON.

5. Select “EVAP LEAK DIAG” in “DATA MONITOR” mode of “ENGINE”.

6. Check that “EVAP LEAK DIAG” indication.
Which is displayed on CONSULT?

CMPLT >> GO TO 4.

YET

>> 1. Perform DTC CONFIRMATION PROCEDURE again.

2. GO TO 1.

4.

PERFORM DTC CONFIRMATION PROCEDURE-3

With CONSULT

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

YES

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

NO

>> INSPECTION END

5.

PERFORM DTC CONFIRMATION PROCEDURE-4

With GST

1. Start engine and let it idle for least 40 seconds.

NOTE:

Do not depress accelerator pedal even slightly.

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

YES

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

NO

>> GO TO 6.

6.

PERFORM DTC CONFIRMATION PROCEDURE-5

With GST

1. Let it idle for at least 2 hours.

2. Turn ignition switch OFF and wait at least 90 minutes.

NOTE:

Never turn ignition switch ON during 90 minutes.

3. Turn ignition switch ON.

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

YES

>> Proceed to 

EC-1229, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009481871

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

EC-1230

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

2. Loosen and retighten three ground screws on the body. Refer to 

EC-1094, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER

1. Disconnect EVAP control system pressure sensor (2) harness

connector.

-

EVAP canister vent control valve (1)

-

Drain filter (3)

-

EVAP canister (4)

-

: Vehicle front

2. Check sensor harness connector for water.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness connector.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-1230, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-14, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481872

EVAP CONTROL SYSTEM PRESSURE SENSOR

1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.

Do not reuse the O-ring, replace it with a new one.

2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM

terminal 32 and ground under the following conditions.

CAUTION:

• Always calibrate the vacuum pump gauge when using it.

BBIA0539E

Water should not exist.

ALBIA0514ZZ

Applied vacuum kPa

(kg/cm

2

, psi)

Voltage V

Not applied

1.8 - 4.8

-26.7 (-0.272, -3.87)

2.1 to 2.5V lower than above value

PBIB1173E

 

 

 

 

 

 

 

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