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Infiniti EX35. Manual - part 641

EC-306

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

>> Replace EVAP canister vent control valve.

16.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to

EC-306, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 17.

>> Replace EVAP control system pressure sensor.

17.

CHECK IF EVAP CANISTER SATURATED WITH WATER

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

Check if water will drain from the EVAP canister (1).

Does water drain from EVAP canister?

YES

>> GO TO 18.

>> GO TO 20.

18.

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

>> GO TO 20.

>> GO TO 19.

19.

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.

20.

CHECK INTERMITTENT INCIDENT

Refer to

GI-38, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000003133455

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Turn ignition switch OFF.

Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
Always replace O-ring with a new one.

Install a vacuum pump to EVAP control system pressure sensor.

Turn ignition switch ON and check output voltage between ECM harness connector terminals under the
following conditions.

: EVAP canister vent control valve

PBIB2731E

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-307

< COMPONENT DIAGNOSIS >

[VQ35HR]

CAUTION:

• Always calibrate the vacuum pump gauge when using it.
• Do not apply below -93.3 kPa (-0.952 kg/cm

, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/

, 14.69 psi).

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace EVAP control system pressure sensor

ECM

Condition

[Applied vacuum kPa (kg/cm

, psi)]

Voltage (V)

Connector

–

Terminal

M107

102

112

Not applied

1.8 - 4.8

-26.7 (-0.272, -3.87)

2.1 to 2.5 lower than above value

EC-308

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0455 EVAP CONTROL SYSTEM

P0455 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000003133456

DTC DETECTION LOGIC

This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and
EVAP canister purge volume control solenoid valve.

CAUTION:

• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the

MIL may come on.

• If the fuel filler cap is not tightened properly, the MIL may come on.
• Use only a genuine NISSAN rubber tube as a replacement.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

CAUTION:

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0455

EVAP control system
gross leak detected

EVAP control system has a very large leak such
as fuel filler cap fell off, EVAP control system
does not operate properly.

• Fuel filler cap remains open or fails to

close.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Foreign matter caught in fuel filler cap.
• Leak is in line between intake manifold

and EVAP canister purge volume control
solenoid valve.

• Foreign matter caught in EVAP canister

vent control valve.

• EVAP canister or fuel tank leaks
• EVAP purge line (pipe and rubber tube)

leaks

• EVAP purge line rubber tube bent.
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the

circuit

• EVAP canister purge volume control so-

lenoid valve and the circuit

• Fuel tank temperature sensor
• O-ring of EVAP canister vent control

valve is missing or damaged.

• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leaks

PBIB1026E

P0455 EVAP CONTROL SYSTEM

EC-309

< COMPONENT DIAGNOSIS >

[VQ35HR]

Never remove fuel filler cap during the DTC Confirmation Procedure.
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
NOTE:
Check that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.
TESTING CONDITION:
• Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed

on flat level surface.

• Open engine hood before conducting the following procedures.

Do you have CONSULT-III?

YES

>> GO TO 2.

>> GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

Tighten fuel filler cap securely until ratcheting sound is heard.

Turn ignition switch ON.

Turn ignition switch OFF and wait at least 10 seconds.

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

Check that the following conditions are met.
COOLAN TEMP/S: 0 - 70

C (32 - 158

INT/A TEMP SE: 0 - 60

C (32 - 140

Select “EVP SML LEAK P0442/P1442” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within the range displayed on the CONSULT-III screen, go to

EC-12, "BASIC INSPECTION : Special Repair Requirement"

Which is displayed on CONSULT-III screen?

>> Go to

EC-309, "Diagnosis Procedure"

>> GO TO 3.

CHECK DTC

Check DTC.

Which DTC is detected?

P0455 >> Go to

EC-316, "Diagnosis Procedure"

P0442 >> Go to

EC-273, "Diagnosis Procedure"