2009 INFINITI QX56 service

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Page 1578 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0455 EVAP CONTROL SYSTEMEC-251
< COMPONENT DIAGNOSIS > [VK56DE]
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Make sure that EVAP hoses are connected to EVAP  canister purge volume control solenoid valve
proper

Page 1580 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0455 EVAP CONTROL SYSTEMEC-253
< COMPONENT DIAGNOSIS > [VK56DE]
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To locate the EVAP leak, install EVAP service port adapter and pres-
sure pump to EVAP service port se

Page 1581 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-254
< COMPONENT DIAGNOSIS >[VK56DE]
P0455 EVAP CONTROL SYSTEM
2. Apply 12 volts DC to EVAP canister vent control va
lve. The valve will close. (Continue to apply 12 volts
until the end of test.)
3

Page 1586 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0456 EVAP CONTROL SYSTEMEC-259
< COMPONENT DIAGNOSIS > [VK56DE]
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1. Attach the EVAP service port 
adapter (commercial service tool)
securely to the EVAP service port.

Page 1587 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-260
< COMPONENT DIAGNOSIS >[VK56DE]
P0456 EVAP CONTROL SYSTEM
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

Page 1588 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0456 EVAP CONTROL SYSTEMEC-261
< COMPONENT DIAGNOSIS > [VK56DE]
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EC
NP
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4. Using EVAP leak detector, locate the EVAP leak. For the leak
detector, refer to the instruction man

Page 1589 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-262
< COMPONENT DIAGNOSIS >[VK56DE]
P0456 EVAP CONTROL SYSTEM
2. Does water drain from the EVAP canister?
Ye s  o r  N o
Yes >> GO TO 10.
No (With CONSULT-III)>>GO TO 12.
No (Without CONSULT-III)>

Page 1599 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-272
< COMPONENT DIAGNOSIS >[VK56DE]
P0500 VSS
6. Check 1st trip DTC.
7. If 1st trip DTC is detected, go to 
EC-272, "Diagnosis Procedure"
.
Overall Function CheckINFOID:0000000003771544
Use this p