Infiniti I30. Emission Control System (2003 year). Manual — part 22

7

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II

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

SEF334X

Without CONSULT-II

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

SEF335X

OK or NG

OK

䊳

GO TO 8.

NG

䊳

Replace EVAP canister purge volume control solenoid valve.

8

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR HOSE

1. Turn ignition switch “OFF”.
2. Check disconnection or improper connection of hose connected to EVAP control system pressure sensor.

OK or NG

OK

䊳

GO TO 9.

NG

䊳

Repair it.

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DTC P0441 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-337

9

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.

SEF495R

2. Check connectors for water.

Water should not exist.

OK or NG

OK

䊳

GO TO 10.

NG

䊳

Replace EVAP control system pressure sensor.

10

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to “DTC Confirmation Procedure” for DTC P0452, EC-370 and P0453, EC-377.

OK or NG

OK

䊳

GO TO 11.

NG

䊳

Replace EVAP control system pressure sensor.

11

CHECK RUBBER TUBE FOR CLOGGING

1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.

OK or NG

OK

䊳

GO TO 12.

NG

䊳

Clean the rubber tube using an air blower.

12

CHECK EVAP CANISTER VENT CONTROL VALVE-I

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

SEF376Z

OK or NG

OK

䊳

GO TO 13.

NG

䊳

Replace EVAP canister vent control valve.

DTC P0441 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-338

13

CHECK EVAP CANISTER VENT CONTROL VALVE-II

With CONSULT-II

1. Reconnect harness connectors disconnected.
2. Turn ignition switch “ON”.
3. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.
4. Check air passage continuity and operation delay time.

SEC158D

Without CONSULT-II

Check air passage continuity and operation delay time under the following conditions.

SEF378Z

Make sure new O-ring is installed properly.

OK or NG

OK

䊳

GO TO 15.

NG

䊳

GO TO 14.

14

CHECK EVAP CANISTER VENT CONTROL VALVE-III

1. Clean the air passage (Portion A to B) of EVAP canister vent control valve using an air blower.
2. Perform Test No. 13 again.

OK or NG

OK

䊳

GO TO 15.

NG

䊳

Replace EVAP canister vent control valve.

15

CHECK EVAP PURGE LINE

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-41.

OK or NG

OK

䊳

GO TO 16.

NG

䊳

Replace it.

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DTC P0441 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-339

16

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

䊳

GO TO 17.

17

CHECK INTERMITTENT INCIDENT

Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-151.

䊳

INSPECTION END

DTC P0441 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-340

On Board Diagnosis Logic

NHEC0960

NOTE:
If DTC P0442 is displayed with P1448, perform trouble diagno-
sis for DTC P1448 first. (See EC-559.)
This diagnosis detects leaks in the EVAP purge line using engine
intake manifold vacuum.
If pressure does not increase, the ECM will check for leaks in the
line between the fuel tank and EVAP canister purge volume con-
trol solenoid valve, under the following “Vacuum test” conditions.
The vacuum cut valve bypass valve is opened to clear the line
between the fuel tank and the EVAP canister purge volume control
solenoid valve. The EVAP canister vent control valve will then be
closed to shut the EVAP purge line off. The EVAP canister purge
volume control solenoid valve is opened to depressurize the EVAP
purge line using intake manifold vacuum. After this occurs, the
EVAP canister purge volume control solenoid valve will be closed.

SEC936C

DTC No.

Trouble diagnosis

name

DTC Detecting Condition

Possible Cause

P0442
0442

EVAP control system
small leak detected
(negative pressure)

EVAP control system has a leak, EVAP control
system does not operate properly.

쐌

Incorrect fuel tank vacuum relief valve

쐌

Incorrect fuel filler cap used

쐌

Fuel filler cap remains open or fails to
close.

쐌

Foreign matter caught in fuel filler cap

쐌

Leak is in line between intake mani-
fold and EVAP canister purge volume
control solenoid valve.

쐌

Foreign matter caught in EVAP canis-
ter vent control valve

쐌

EVAP canister or fuel tank leaks

쐌

EVAP purge line (pipe and rubber
tube) leaks

쐌

EVAP purge line rubber tube bent

쐌

Blocked or bent rubber tube to EVAP
control system pressure sensor

쐌

Loose or disconnected rubber tube

쐌

EVAP canister vent control valve and
the circuit

쐌

EVAP canister purge volume control
solenoid valve and the circuit

쐌

Absolute pressure sensor

쐌

Fuel tank temperature sensor

쐌

O-ring of EVAP canister vent control
valve is missing or damaged.

쐌

Water separator

쐌

EVAP canister is saturated with water.

쐌

EVAP control system pressure sensor

쐌

Fuel level sensor and the circuit

쐌

Refueling control valve

쐌

ORVR system leaks

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DTC P0442 EVAP CONTROL SYSTEM

On Board Diagnosis Logic

EC-341

CAUTION:

쐌

Use only a genuine NISSAN fuel filler cap as a replace-
ment. If an incorrect fuel filler cap is used, the MIL may
come on.

쐌

If the fuel filler cap is not tightened properly, the MIL may
come on.

쐌

Use only a genuine NISSAN rubber tube as a replacement.

SEC760C

SEC761C

SEC762C

SEC763C

DTC Confirmation Procedure

NHEC1444

NOTE:

쐌

If DTC P0442 is displayed with P1448, perform trouble
diagnosis for DTC P1448 first (see EC-559).

쐌

If

“DTC

Confirmation

Procedure”

has

been

previously

conducted, always turn ignition switch “OFF” and wait at least
10 seconds before conducting the next test.

쐌

Make sure that EVAP hoses are connected to EVAP canis-
ter purge volume control solenoid valve properly.

TESTING CONDITION:

쐌

Perform “DTC WORK SUPPORT” when the fuel level is
between 1/4 and 3/4 full, and vehicle is placed on flat level
surface.

쐌

Always perform test at a temperature of 0 to 30°C (32 to
86°F).

쐌

Open engine hood before conducting the following proce-
dure.

WITH CONSULT-II

NHEC1444S01

1)

Turn ignition switch “ON”.

2)

Turn ignition switch “OFF” and wait at least 10 seconds.

3)

Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.

4)

Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 70°C (32 - 158°F)
INT/A TEMP SE: 0 - 30°C (32 - 86°F)

5)

Select “EVP SML LEAK P0442/P1442” of “EVAPORATIVE
SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-
II.
Follow the instruction displayed.

NOTE:
If the engine speed cannot be maintained within the range dis-
played on the CONSULT-II screen, go to “Basic Inspection”,
EC-119.
6)

Make sure that “OK” is displayed.
If “NG” is displayed, refer to “Diagnostic Procedure”, EC-343.

NOTE:
Make sure that EVAP hoses are connected to EVAP canister
purge volume control solenoid valve properly.

WITH GST

NHEC1444S02

NOTE:
Be sure to read the explanation of “Driving Pattern” on EC-82
before driving vehicle.
1)

Start engine.

2)

Drive vehicle according to “Driving Pattern”, EC-82.

DTC P0442 EVAP CONTROL SYSTEM

On Board Diagnosis Logic (Cont’d)

EC-342

3)

Stop vehicle.

4)

Select “MODE 1” with GST.

쐌

If SRT of EVAP system is not set yet, go to the following step.

쐌

If SRT of EVAP system is set, the result will be OK.

5)

Turn ignition switch “OFF” and wait at least 10 seconds.

6)

Start engine.
It is not necessary to cool engine down before driving.

7)

Drive vehicle again according to the “Driving Pattern”, EC-82.

8)

Stop vehicle.

9)

Select “MODE 3” with GST.

쐌

If P0442 is displayed on the screen, go to “Diagnostic
Procedure”, EC-343.

쐌

If P0441 is displayed on the screen, go to “Diagnostic Proce-
dure” for DTC P0441, EC-334.

쐌

If P0441 and P0442 are not displayed on the screen, go to the
following step.

10) Select “MODE 1” with GST.

쐌

If SRT of EVAP system is set, the result will be OK.

쐌

If SRT of EVAP system is not set, go to step 6.

Diagnostic Procedure

NHEC0962

1

CHECK FUEL FILLER CAP DESIGN

1. Turn ignition switch “OFF”.
2. Check for genuine NISSAN fuel filler cap design.

SEF915U

OK or NG

OK

䊳

GO TO 2.

NG

䊳

Replace with genuine NISSAN fuel filler cap.

2

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.

OK or NG

OK

䊳

GO TO 3.

NG

䊳

쐌

Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.

쐌

Retighten until ratcheting sound is heard.

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DTC P0442 EVAP CONTROL SYSTEM

DTC Confirmation Procedure (Cont’d)

EC-343

3

CHECK FUEL FILLER CAP FUNCTION

Check for air releasing sound while opening the fuel filler cap.

OK or NG

OK

䊳

GO TO 5.

NG

䊳

GO TO 4.

4

CHECK FUEL TANK VACUUM RELIEF VALVE

1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.

SEF445Y

SEF943S

Pressure:

15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

2

, 2.22 - 2.90 psi)

Vacuum:

−6.0 to −3.3 kPa (−0.061 to −0.034 kg/cm

2

, −0.87 to −0.48 psi)

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.

OK or NG

OK

䊳

GO TO 5.

NG

䊳

Replace fuel filler cap with a genuine one.

DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-344

5

INSTALL THE PRESSURE PUMP

To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely.

SEC929C

SEF916U

NOTE:
Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.

Models with CONSULT-II

䊳

GO TO 6.

Models without CON-
SULT-II

䊳

GO TO 7.

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DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-345

6

CHECK FOR EVAP LEAK

With CONSULT-II

1. Turn ignition switch “ON”.
2. Select “EVAP SYSTEM CLOSE” of “WORK SUPPORT” mode with CONSULT-II.
3. Touch “START” and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.

NOTE:

쐌

Never use compressed air or a high pressure pump.

쐌

Do not exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in the system.

PEF917U

4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.

Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-41.

SEF200U

OK or NG

OK

䊳

GO TO 8.

NG

䊳

Repair or replace.

DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-346

7

CHECK FOR EVAP LEAK

Without CONSULT-II

1. Turn ignition switch “OFF”.
2. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of

test.)

3. Apply 12 volts DC to vacuum cut valve bypass valve. The valve will open. (Continue to apply 12V until the end of test.)

SEF254X

4. Pressurize the EVAP line using pressure pump with 1.3 to 2.7 kPa (10 to 20 mmHg, 0.39 to 0.79 inHg), then remove

pump and EVAP service port adapter.
NOTE:

쐌

Never use compressed air or a high pressure pump.

쐌

Do not exceed 4.12 kPa (0.042 kg/cm

2

, 0.6 psi) of pressure in the system.

5. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.

Refer to “EVAPORATIVE EMISSION LINE DRAWING”, EC-41.

SEF200U

OK or NG

OK

䊳

GO TO 8.

NG

䊳

Repair or replace.

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DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-347

8

CHECK WATER SEPARATOR

1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.

PBIB1032E

5. In case of NG in items 2 - 4, replace the parts.
NOTE:

쐌

Do not disassemble water separator.

OK or NG

OK

䊳

GO TO 9.

NG

䊳

Replace water separator.

9

CHECK EVAP CANISTER VENT CONTROL VALVE, O-RING AND CIRCUIT

Refer to “DTC Confirmation Procedure”, EC-559.

OK or NG

OK

䊳

GO TO 10.

NG

䊳

Repair or replace EVAP canister vent control valve and O-ring or harness/connector.

10

CHECK IF EVAP CANISTER SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve attached.
2. Does water drain from the EVAP canister?

SEF596U

Yes or No

Yes

䊳

GO TO 11.

No (With CONSULT-II)

䊳

GO TO 13.

No (Without CONSULT-
II)

䊳

GO TO 14.

DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-348

11

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 lb).

OK or NG

OK (With CONSULT-II)

䊳

GO TO 13.

OK (Without CONSULT-
II)

䊳

GO TO 14.

NG

䊳

GO TO 12.

12

DETECT MALFUNCTIONING PART

Check the following.

쐌

EVAP canister for damage

쐌

EVAP hose between EVAP canister and water separator for clogging or poor connection

䊳

Repair hose or replace EVAP canister.

13

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-II

1. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
2. Start engine.
3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode.
4. Touch “Qu” on CONSULT-II screen to increase “PURG VOL CONT/V” opening to 100.0%.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.

SEC142D

Vacuum should exist.

OK or NG

OK

䊳

GO TO 16.

NG

䊳

GO TO 15.

14

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum hose for vacuum when revving engine up to 2,000 rpm.

Vacuum should exist.

OK or NG

OK

䊳

GO TO 17.

NG

䊳

GO TO 15.

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DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-349

15

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to “Vacuum Hose Drawing”, EC-31.

OK or NG

OK (With CONSULT-II)

䊳

GO TO 16.

OK (Without CONSULT-
II)

䊳

GO TO 17.

NG

䊳

Repair or reconnect the hose.

16

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II

1. Start engine.
2. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-II. Check that engine speed varies according

to the valve opening.

SEC142D

OK or NG

OK

䊳

GO TO 18.

NG

䊳

GO TO 17.

DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-350

17

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-II

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

SEC929C

SEF334X

Without CONSULT-II

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

SEC929C

SEF335X

OK or NG

OK

䊳

GO TO 18.

NG

䊳

Replace EVAP canister purge volume control solenoid valve.

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DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-351

18

CHECK FUEL TANK TEMPERATURE SENSOR

1. Remove fuel level sensor unit.
2. Check resistance between fuel level sensor unit and fuel pump terminals 4 and 5 by heating with hot water or heat gun

as shown in the figure.

SEF587X

OK or NG

OK

䊳

GO TO 19.

NG

䊳

Replace fuel level sensor unit.

DTC P0442 EVAP CONTROL SYSTEM

Diagnostic Procedure (Cont’d)

EC-352