2007 INFINITI QX56 Factory Service Manual

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Page 1489 of 3061

INFINITI QX56 2007 Factory Service Manual EC-406
< SERVICE INFORMATION >
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
• Harness for open or short between EVAP control system pressure sensor and ECM
>> Repair open circuit or short to ground

Page 1490 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-407
< SERVICE INFORMATION >
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Component InspectionINFOID:0000000003531908
EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove E

Page 1491 of 3061

INFINITI QX56 2007 Factory Service Manual EC-408
< SERVICE INFORMATION >
DTC P0455 EVAP CONTROL SYSTEM
DTC P0455 EVAP CONTROL SYSTEM
On Board Diagnosis LogicINFOID:0000000003531909
This diagnosis detects a very large leak (fuel filler cap fel

Page 1492 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P0455 EVAP CONTROL SYSTEM
EC-409
< SERVICE INFORMATION >
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•Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid valve
properly.
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DTC P0455 EVAP CONTROL SYSTEM
EC-409
< SERVICE INFORMATION >
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•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-71, "
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-410, "
Diagnosis Procedure".
If P0442 is displayed, perform Diagnostic Procedure for DTC
P0442, EC-360, "
Diagnosis Procedure".
WITH GST
NOTE:
Be sure to read the explanation of EC-49, "
Emission-related Diagnostic Information" before driving vehicle.
1. Start engine.
2. Drive vehicle according to EC-49, "
Emission-related Diagnostic Information".
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-356, "
Diagnosis Procedure".
• If P0442 is displayed on the screen, go to EC-360, "
Diagnosis Procedure".
• If P0455 is displayed on the screen, go to EC-410, "
Diagnosis Procedure".
PBIB0829E
SEC763C

Page 1493 of 3061

INFINITI QX56 2007 Factory Service Manual EC-410
< SERVICE INFORMATION >
DTC P0455 EVAP CONTROL SYSTEM
Diagnosis Procedure
INFOID:0000000003531911
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel fi

Page 1494 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P0455 EVAP CONTROL SYSTEM
EC-411
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8.INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump

Page 1495 of 3061

INFINITI QX56 2007 Factory Service Manual EC-412
< SERVICE INFORMATION >
DTC P0455 EVAP CONTROL SYSTEM
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
un

Page 1496 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P0455 EVAP CONTROL SYSTEM
EC-413
< SERVICE INFORMATION >
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13.CHECK VACUUM HOSE
Check vacuum hoses for clogging or disconnection. Refer to EC-100, "
Vacuum Hose Drawi

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