2008 INFINITI QX56 Factory Service Manual

Page 1713 of 4083

INFINITI QX56 2008  Factory Service Manual EC-414
< COMPONENT DIAGNOSIS >[VK56DE]
IGNITION SIGNAL
>> Repair or replace harness or connectors.
12.CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harnes

Page 1714 of 4083

INFINITI QX56 2008  Factory Service Manual IGNITION SIGNALEC-415
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
7. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-IIl to release fuel press

Page 1715 of 4083

INFINITI QX56 2008  Factory Service Manual EC-416
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System DescriptionINFOID:0000000001351317
From the beginning of refueling, the

Page 1716 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-417
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Does water drain from
 the EVAP canister?
Ye s  o r  N o
Yes >> GO TO 3.
No >> GO TO 5.

Page 1717 of 4083

INFINITI QX56 2008  Factory Service Manual EC-418
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
4.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and  vehicle frame for clogging or poor connectio

Page 1718 of 4083

INFINITI QX56 2008  Factory Service Manual ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-419
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gau

Page 1719 of 4083

INFINITI QX56 2008  Factory Service Manual EC-420
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
d. Apply vacuum pressure to hose end [
−13.3 kPa ( −100 mmHg, − 3.94 inHg)] with fuel gauge retainer
remaining ope

Page 1720 of 4083

INFINITI QX56 2008  Factory Service Manual POSITIVE CRANKCASE VENTILATIONEC-421
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
POSITIVE CRANKCASE VENTILATION
DescriptionINFOID:0000000001351320
SYSTEM DESCRIPTION
This system r