2008 INFINITI QX56 Factory Service Manual

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Page 1553 of 4083

INFINITI QX56 2008 Factory Service Manual EC-254
< COMPONENT DIAGNOSIS >[VK56DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Component DescriptionINFOID:0000000001351623
The EVAP control system pressure

Page 1554 of 4083

INFINITI QX56 2008 Factory Service Manual P0453 EVAP CONTROL SYSTEM PRESSURE SENSOREC-255
< COMPONENT DIAGNOSIS > [VK56DE]
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6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC

Page 1555 of 4083

INFINITI QX56 2008 Factory Service Manual EC-256
< COMPONENT DIAGNOSIS >[VK56DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor
terminal 3 and ground with CON

Page 1556 of 4083

INFINITI QX56 2008 Factory Service Manual P0453 EVAP CONTROL SYSTEM PRESSURE SENSOREC-257
< COMPONENT DIAGNOSIS > [VK56DE]
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• Harness connectors E5, F14
• Harness for open or short between EVAP c
ontrol syst

Page 1557 of 4083

INFINITI QX56 2008 Factory Service Manual EC-258
< COMPONENT DIAGNOSIS >[VK56DE]
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
>>
INSPECTION END
Component InspectionINFOID:0000000001351629
EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove EVAP contro

Page 1558 of 4083

INFINITI QX56 2008 Factory Service Manual P0455 EVAP CONTROL SYSTEMEC-259
< COMPONENT DIAGNOSIS > [VK56DE]
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P0455 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000001351630
This diagnosis detects a very

Page 1559 of 4083

INFINITI QX56 2008 Factory Service Manual EC-260
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
•
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
• If DTC Confirmation Pro

EC-260
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
•
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-III
1. Tighten fuel filler cap secure ly 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-III.
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 “EVAPO RATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-III.
Follow the instruction displayed.
NOTE:
If the engine speed cannot be maintained within t he range displayed on the CONSULT-III screen, go to
EC-13, "
Basic Inspection".
7. Make sure that “OK” is displayed. If “NG” is displayed, select “SELF-DIAG RE SULTS” mode and make sure that “EVAP GROSS LEAK
[P0455]” is displayed. If it is displayed, refer to EC-260, "
Diagnosis Procedure".
If P0442 is displayed, perform Diagnostic Procedure for DTC P0442, EC-225, "
Diagnosis Procedure".
WITH GST
NOTE:
Be sure to read the explanation of EC-462, "
DTC Index" before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-462, "
DTC Index".
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select Service $07 with GST. • If P0441 is displayed on the screen, go to EC-220, "
Diagnosis Procedure".
• If P0442 is displayed on the screen, go to EC-225, "
Diagnosis Procedure".
• If P0455 is displayed on the screen, go to EC-260, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001351632
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 proper ly by rotating the cap clockwise.
SEF915U
Revision: March 2010 2008 QX56

Page 1560 of 4083

INFINITI QX56 2008 Factory Service Manual P0455 EVAP CONTROL SYSTEMEC-261
< COMPONENT DIAGNOSIS > [VK56DE]
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OK or NG
OK >> GO TO 3.
NG >> 1. Open fuel filler cap, then clean cap and fuel filler neck threads usin

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