2008 INFINITI QX56 Factory Service Manual

Page 1561 of 4083

INFINITI QX56 2008  Factory Service Manual EC-262
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
With CONSULT-III>>GO TO 9.
Without CONSULT-III>>GO TO 10.
9.CHECK FOR EVAP LEAK
With CONSULT-II I
1. Turn ignition switch ON.
2. Select

Page 1562 of 4083

INFINITI QX56 2008  Factory Service Manual P0455 EVAP CONTROL SYSTEMEC-263
< COMPONENT DIAGNOSIS > [VK56DE]
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4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction manu

Page 1563 of 4083

INFINITI QX56 2008  Factory Service Manual EC-264
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
OK >> GO TO 16.
NG >> Replace EVAP canister purge volume control solenoid valve.
16.CHECK FUEL TANK TEMPERATURE SENSOR
Refer to  EC-190

Page 1564 of 4083

INFINITI QX56 2008  Factory Service Manual P0455 EVAP CONTROL SYSTEMEC-265
< COMPONENT DIAGNOSIS > [VK56DE]
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2. Check valve opening pressure and vacuum.
3. If out of specificat
ion, replace fuel filler cap as an

Page 1565 of 4083

INFINITI QX56 2008  Factory Service Manual EC-266
< COMPONENT DIAGNOSIS >[VK56DE]
P0456 EVAP CONTROL SYSTEM
P0456 EVAP CONTROL SYSTEM
On Board Diagn
osis LogicINFOID:0000000001351633
This diagnosis detects very small leaks in the EVAP  line be

Page 1566 of 4083

INFINITI QX56 2008  Factory Service Manual P0456 EVAP CONTROL SYSTEMEC-267
< COMPONENT DIAGNOSIS > [VK56DE]
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DTC Confirmation ProcedureINFOID:0000000001351634
NOTE:
•
If DTC P0456 is displayed with P0442, firs

Page 1567 of 4083

INFINITI QX56 2008  Factory Service Manual EC-268
< COMPONENT DIAGNOSIS >[VK56DE]
P0456 EVAP CONTROL SYSTEM
2. Set the pressure pump and a hose.
3. Also set a vacuum gauge via 3-way connector and a hose.
4. Turn ignition switch ON.
5. Connect

Page 1568 of 4083

INFINITI QX56 2008  Factory Service Manual P0456 EVAP CONTROL SYSTEMEC-269
< COMPONENT DIAGNOSIS > [VK56DE]
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G H
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5.INSTALL THE PRESSURE PUMP
To locate the EVAP leak, install EVAP service port adapter and pres-
sure p