Nissan Pathfinder (2006 year). Manual — part 197

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-435

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2006 Pathfinder

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between EVAP control system pressure sensor
terminal 3 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors C1, E41

●

Harness connectors E5, F14

●

Harness for open or short between EVAP control system pressure sensor and ECM

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

5.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND

SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal
67.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors C1, E41

●

Harness connectors E5, F14

●

Harness for open or short between EVAP control system pressure sensor and ECM

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

Voltage: Approximately 5V

PBIB0138E

Continuity should exist.

EC-436

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

2006 Pathfinder

7.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND

SHORT

1.

Check harness continuity between ECM terminal 32 and EVAP control system pressure sensor terminal
2.
Refer to Wiring Diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors C1, E41

●

Harness connectors E5, F14

●

Harness for open or short between EVAP control system pressure sensor and ECM

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

9.

CHECK RUBBER TUBE

1.

Disconnect rubber tube connected to EVAP canister vent control valve.

2.

Check the rubber tube for clogging, vent and kinked.

OK or NG

OK

>> GO TO 10.

NG

>> Clean the rubber tube using an air blower, repair or replace rubber tube.

10.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-414, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace EVAP canister vent control valve.

11.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to

EC-438, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> Replace EVAP control system pressure sensor.

Continuity should exist.

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

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2006 Pathfinder

12.

CHECK IF EVAP CANISTER SATURATED WITH WATER

1.

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

2.

Check if water will drain from the EVAP canister.

Yes or No

Yes

>> GO TO 13.

No

>> GO TO 15.

13.

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 2.0 kg (4.4 lb).
OK or NG

OK

>> GO TO 15.

NG

>> GO TO 14.

14.

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.

15.

CHECK INTERMITTENT INCIDENT

Refer to

EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

.

>> INSPECTION END

BBIA0558E

EC-438

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

2006 Pathfinder

Component Inspection

UBS00KA4

EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

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

●

Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or
pressure over 101.3 kPa (760 mmHg, 29.92 inHg).

4.

If NG, replace EVAP control system pressure sensor.

Applied vacuum kPa

(mmHg, inHg)

Voltage V

Not applied

1.8 - 4.8

-26.7 (-200, -7.87)

2.1 to 2.5V lower than above value

PBIB1173E

DTC P0455 EVAP CONTROL SYSTEM

EC-439

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2006 Pathfinder

DTC P0455 EVAP CONTROL SYSTEM

PFP:14950

On Board Diagnosis Logic

UBS00KA5

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 No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0455
0455

EVAP control system
gross leak detected

EVAP control system has a very large leak
such as fuel filler cap fell off, EVAP control sys-
tem 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
solenoid 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

EC-440

DTC P0455 EVAP CONTROL SYSTEM

2006 Pathfinder

DTC Confirmation Procedure

UBS00KA6

CAUTION:

Never remove fuel filler cap during the DTC Confirmation Procedure.

NOTE:

●

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

●

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.

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.

WITH CONSULT-II

1.

Tighten fuel filler cap securely until ratcheting sound is heard.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

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

5.

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

°

C (32 - 158

°

F)

INT/A TEMP SE: 0 - 60

°

C (32 - 140

°

F)

6.

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 displayed on the CONSULT-II screen, go to

EC-70, "Basic Inspection"

.

7.

Make sure that “OK” is displayed.
If “NG” is displayed, select “SELF-DIAG RESULTS” mode and
make sure that “EVAP GROSS LEAK [P0455]” is displayed. If it
is displayed, refer to

EC-441, "Diagnostic Procedure"

.

If P0442 is displayed, perform Diagnostic Procedure for DTC
P0442

EC-388, "Diagnostic Procedure"

.

PBIB0829E

SEC763C

DTC P0455 EVAP CONTROL SYSTEM

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2006 Pathfinder

WITH GST

NOTE:
Be sure to read the explanation of

EC-57, "Driving Pattern"

before driving vehicle.

1.

Start engine.

2.

Drive vehicle according to

EC-57, "Driving Pattern"

.

3.

Stop vehicle.

4.

Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

5.

Select Service $07 with GST.

●

If P0455 is displayed on the screen, go to

EC-441, "Diagnostic Procedure"

.

●

If P0442 is displayed on the screen, go to Diagnostic Procedure, for DTC P0442,

EC-388

.

●

If P0441 is displayed on the screen, go to Diagnostic Procedure for DTC P0441,

EC-383

.

Diagnostic Procedure

UBS00KA7

1.

CHECK FUEL FILLER CAP DESIGN

1.

Turn ignition switch OFF.

2.

Check for genuine NISSAN fuel filler cap design.

OK or NG

OK

>> GO TO 2.

NG

>> 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

>> GO TO 3.

NG

>> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.

2. Retighten until ratcheting sound is heard.

3.

CHECK FUEL FILLER CAP FUNCTION

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

CHECK FUEL TANK VACUUM RELIEF VALVE

Refer to

EC-35, "FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)"

.

OK or NG

OK

>> GO TO 5.

NG

>> Replace fuel filler cap with a genuine one.

SEF915U

EC-442

DTC P0455 EVAP CONTROL SYSTEM

2006 Pathfinder

5.

CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or
disconnection.
Refer to

EC-33, "EVAPORATIVE EMISSION LINE DRAWING"

.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or reconnect the hose.

6.

CLEAN EVAP PURGE LINE

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

>> GO TO 7.

7.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

●

EVAP canister vent control valve is installed properly.
Refer to

EC-36, "Removal and Installation"

.

●

EVAP canister vent control valve.
Refer to

EC-414, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace EVAP canister vent control valve and O-ring.

8.

INSTALL THE PRESSURE PUMP

To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service port securely.

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

With CONSULT-II>>GO TO 9.
Without CONSULT-II>>GO TO 10.

BBIA0550E

SEF916U