2008 INFINITI QX56 Factory Service Manual

Page 1521 of 4083

INFINITI QX56 2008  Factory Service Manual EC-222
< COMPONENT DIAGNOSIS >[VK56DE]
P0441 EVAP CONTROL SYSTEM
3. Check that air flows freely.
OK or NG
OK (With CONSULT-III)>>GO TO 6.
OK (Without CONSULT-III)>>GO TO 7.
NG >> Repair or clean hoses

Page 1522 of 4083

INFINITI QX56 2008  Factory Service Manual P0441 EVAP CONTROL SYSTEMEC-223
< COMPONENT DIAGNOSIS > [VK56DE]
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Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to 
EC-37, "
Descrip

Page 1523 of 4083

INFINITI QX56 2008  Factory Service Manual EC-224
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 EVAP CONTROL SYSTEM
P0442 EVAP CONTROL SYSTEM
On Board Diagn
osis LogicINFOID:0000000001351577
This diagnosis detects leaks in the EVAP purge line using en

Page 1524 of 4083

INFINITI QX56 2008  Factory Service Manual P0442 EVAP CONTROL SYSTEMEC-225
< COMPONENT DIAGNOSIS > [VK56DE]
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• If DTC Confirmation Procedure has been previously conduc
ted, always turn ignition switch OFF and w

Page 1525 of 4083

INFINITI QX56 2008  Factory Service Manual EC-226
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 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 4

Page 1526 of 4083

INFINITI QX56 2008  Factory Service Manual P0442 EVAP CONTROL SYSTEMEC-227
< 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 1527 of 4083

INFINITI QX56 2008  Factory Service Manual EC-228
< COMPONENT DIAGNOSIS >[VK56DE]
P0442 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 1528 of 4083

INFINITI QX56 2008  Factory Service Manual P0442 EVAP CONTROL SYSTEMEC-229
< COMPONENT DIAGNOSIS > [VK56DE]
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OK >> GO TO 15.
NG >> Repair or reconnect the hose.
15.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOI