2009 INFINITI QX56 Factory Service Manual

Page 1737 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-410
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
Does water drain from the EVAP canister?
Ye s  o r  N o
Ye s > > G O  T O  3 .
No >> GO TO 5.
3.REPLACE EVAP CANISTER
R

Page 1738 of 4171

INFINITI QX56 2009  Factory Service Manual 
ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-411
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
4.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister  and vehicle fra

Page 1739 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-412
< COMPONENT DIAGNOSIS >[VK56DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
2. Drain fuel from the tank as follows:
a. Remove fuel feed hose located on the fuel gauge retainer. 
b. Connect a spar

Page 1740 of 4171

INFINITI QX56 2009  Factory Service Manual 
ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-413
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
d. Apply vacuum pressure to hose end [
−13.3 kPa ( −100 mmHg,  −3.94 inHg)] with

Page 1741 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-414
< COMPONENT DIAGNOSIS >[VK56DE]
POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
DescriptionINFOID:0000000003771727
SYSTEM DESCRIPTION
This system returns blow-by gas to the intak

Page 1742 of 4171

INFINITI QX56 2009  Factory Service Manual 
POSITIVE CRANKCASE VENTILATIONEC-415
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
1. Check hoses and hose connections for leaks.
2. Disconnect all hoses and clean with compressed

Page 1743 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-416
< COMPONENT DIAGNOSIS >[VK56DE]
REFRIGERANT PRESSURE SENSOR
REFRIGERANT PRESSURE SENSOR
Component DescriptionINFOID:0000000003771729
The refrigerant pressure sensor is
 installed at the conden

Page 1744 of 4171

INFINITI QX56 2009  Factory Service Manual 
REFRIGERANT PRESSURE SENSOREC-417
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Refer to 
EC-85, "Ground Inspection".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connect