2009 INFINITI QX56 Factory Service Manual

Page 1569 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-242
< COMPONENT DIAGNOSIS >[VK56DE]
P0452 EVAP CONTROL S
YSTEM PRESSURE SENSOR
6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to  EC-242, "

Page 1570 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0452 EVAP CONTROL SYSTEM PRESSURE SENSOREC-243
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
3.CHECK EVAP CONTROL SYS
TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition swi

Page 1571 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-244
< COMPONENT DIAGNOSIS >[VK56DE]
P0452 EVAP CONTROL S
YSTEM PRESSURE SENSOR
Check the following.
 Harness connectors C1, E41
 Harness connectors E5, F14
 Harness for open or short between EV

Page 1572 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOREC-245
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P0453 EVAP CONTROL SYSTEM
 PRESSURE SENSOR
Component DescriptionINFOID:000000000377151

Page 1573 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-246
< COMPONENT DIAGNOSIS >[VK56DE]
P0453 EVAP CONTROL S
YSTEM PRESSURE SENSOR
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-III.
5. Make sure that “FUEL T/TMP SE”

Page 1574 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOREC-247
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
OK >> GO TO 3.
NG >> Repair or replace harness connector.
3.CHECK EVAP CONTROL SYS
TEM

Page 1575 of 4171

INFINITI QX56 2009  Factory Service Manual 
EC-248
< COMPONENT DIAGNOSIS >[VK56DE]
P0453 EVAP CONTROL S
YSTEM PRESSURE SENSOR
8.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors C1, E41
 Harness connectors E5, F14
 Harness

Page 1576 of 4171

INFINITI QX56 2009  Factory Service Manual 
P0453 EVAP CONTROL SYSTEM PRESSURE SENSOREC-249
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
15.CHECK INTERMITTENT INCIDENT
Refer to  GI-35, "How to Check Terminal"
 and GI-38, "I