2006 INFINITI QX56 Factory Service Manual

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Page 1633 of 3383

INFINITI QX56 2006 Factory Service Manual EC-422Revision: November 2009
DTC P0455 EVAP CONTROL SYSTEM
2006 QX56
5. CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or

Page 1634 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0455 EVAP CONTROL SYSTEMEC-423
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Revision: November 2009 2006 QX56
9. CHECK FOR EVAP LEAK
With CONSULT-II
1. Turn ignition switch ON.
2. Select “EVAP SYSTEM CLOSE ”

Page 1635 of 3383

INFINITI QX56 2006 Factory Service Manual EC-424Revision: November 2009
DTC P0455 EVAP CONTROL SYSTEM
2006 QX56
10. CHECK FOR EVAP LEAK
Without CONSULT-II
1. Turn ignition switch OFF.
2. Apply 12 volts DC to EVAP canister vent control valve

Page 1636 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0455 EVAP CONTROL SYSTEMEC-425
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12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-II
1. Start engi

Page 1637 of 3383

INFINITI QX56 2006 Factory Service Manual EC-426Revision: November 2009
DTC P0455 EVAP CONTROL SYSTEM
2006 QX56
17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-404, "
Component Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Replace E

Page 1638 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0456 EVAP CONTROL SYSTEMEC-427
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Revision: November 2009 2006 QX56
DTC P0456 EVAP CONTROL SYSTEMPFP:14950
On Board Diagnosis LogicUBS00H5T
This diagnosis detects very smal

Page 1639 of 3383

INFINITI QX56 2006 Factory Service Manual EC-428Revision: November 2009
DTC P0456 EVAP CONTROL SYSTEM
2006 QX56
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

EC-428Revision: November 2009
DTC P0456 EVAP CONTROL SYSTEM
2006 QX56
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 ProcedureUBS00H5U
NOTE:
If DTC P0456 is displayed with P0442, first perform trouble diagnosis for DTC P0456.
After repair, make sure that the hoses and clips are installed 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:
Open engine hood before conducting following procedure.
If any of following conditions are met just before the DTC confirmation procedure, leave the vehi-
cle for more than 1 hour.
–Fuel filler cap is removed.
–Fuel is refilled or drained.
–EVAP component parts is/are removed.
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
2. Make sure the following conditions are met. FUEL LEVEL SE: 0.25 - 1.4V
COOLAN TEMP/S: 0 - 32 °C (32 - 90 °F)
FUEL T/TMP SE: 0 - 35 °C (32 - 95 °F)
INT/A TEMP SE: More than 0 °C (32 °F)
If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle) or refilling/draining
fuel until the output voltage condition of the “FUEL LEVEL SE ” meets within the range above and leave
the vehicle for more than 1 hour. Then start from step 1).
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Select “EVP V/S LEAK P0456/P1456 ” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT-II.
Follow the instruction displayed.
5. Make sure that “OK ” is displayed.
If “NG ” is displayed, refer to EC-430, "
Diagnostic Procedure" .
NOTE:
If the engine speed cannot be maintained within the range displayed on CONSULT-II screen, go
to EC-71, "
Basic Inspection" .
Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
PBIB0837E

Page 1640 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P0456 EVAP CONTROL SYSTEMEC-429
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Revision: November 2009 2006 QX56
Overall Function CheckUBS00H5V
WITH GST
Use this procedure to check the overall function of the EVAP ve

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