2009 INFINITI QX56 Factory Service Manual

cruise control trailer fuse diagram engine overheat OBD port wheel bolt torque

Page 1617 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-290
< COMPONENT DIAGNOSIS >[VK56DE]
P0850 PNP SWITCH
NG >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M31, E152
Harness for open or short between ECM and com

Page 1618 of 4171

INFINITI QX56 2009 Factory Service Manual
P1140, P1145 IVT CONTROL POSITION SENSOR
EC-291
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P1140, P1145 IVT CONTROL POSITION SENSOR
Component DescriptionINFOID:0000000003771575

P1140, P1145 IVT CONTROL POSITION SENSOR
EC-291
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P1140, P1145 IVT CONTROL POSITION SENSOR
Component DescriptionINFOID:0000000003771575
Intake valve timing control position sensors are located in the front of
cylinder heads in both bank 1 and bank 2.
This sensor uses a Hall IC.
The cam position is determined by the intake camshaft sprocket con-
cave (in four places). The ECM provides feedback to the intake valve
timing control for appropriate target valve open-close timing accord-
ing to drive conditions based on detected cam position.
On Board Diagnosis LogicINFOID:0000000003771576
DTC Confirmation ProcedureINFOID:0000000003771577
1. If DTC Confirmation Procedure has been previously c
onducted, always perform the following before con-
ducting the next step.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Maintain the following conditions for at least 10 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-291, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003771578
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
SEF359Z
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1140
11 4 0
(Bank 1)
Intake valve timing control
position sensor circuit An excessively high or low voltage from the
sensor is sent to ECM. Harness or connectors
(Intake valve timing control position
sensor circuit is open or shorted)
Intake valve timing control position sensor
Crankshaft position sensor (POS)
Camshaft positi on sensor (PHASE)
Accumulation of debris to the signal pick-up portion of the camshaft sprock-
et
P1145
11 4 5
(Bank 2)
ENG SPEED More th
an idle speed
Selector lever P or N position
Revision: December 20092009 QX56

Page 1619 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-292
< COMPONENT DIAGNOSIS >[VK56DE]
P1140, P1145 IVT CONT
ROL POSITION SENSOR
Refer to EC-85, "Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
2.CHECK INTAK

Page 1620 of 4171

INFINITI QX56 2009 Factory Service Manual
P1140, P1145 IVT CONTROL POSITION SENSOR
EC-293
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
3. Also check harness for short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DE

Page 1621 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-294
< COMPONENT DIAGNOSIS >[VK56DE]
P1140, P1145 IVT CONT
ROL POSITION SENSOR
>>INSPECTION END
Component InspectionINFOID:0000000003771579
INTAKE VALVE TIMING CONTROL POSITION SENSOR
1. Disconnect

Page 1622 of 4171

INFINITI QX56 2009 Factory Service Manual
P1148, P1168 CLOSED LOOP CONTROLEC-295
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P1148, P1168 CLOSED LOOP CONTROL
On Board Diagnosis LogicINFOID:0000000003771580
These self-dia

Page 1623 of 4171

INFINITI QX56 2009 Factory Service Manual
EC-296
< COMPONENT DIAGNOSIS >[VK56DE]
P1211 TCS CONTROL UNIT
P1211 TCS CONTROL UNIT
DescriptionINFOID:0000000003771581
The malfunction information related to TCS is trans
ferred through the CAN comm

Page 1624 of 4171

INFINITI QX56 2009 Factory Service Manual
P1212 TCS COMMUNICATION LINEEC-297
< COMPONENT DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
P1212 TCS COMMUNICATION LINE
DescriptionINFOID:0000000003771585
NOTE:

If DTC P1212 is displayed w

Load next 8 pages

Page: < prev 1-10 ... 1585-1592 1593-1600 1601-1608 1609-1616 1617-1624 1625-1632 1633-1640 1641-1648 1649-1656 ... 4176 next >

parking brake differential fuel pump climate control hood release inflation pressure