2007 INFINITI QX56 width

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-129
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000003531630
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionINFOID:0000000003531631
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2 , 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30°C (68 - 86°F)
• Engine coolant temperature: 75 - 95°C (167 - 203°F)
• Engine speed: Idle
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle until “ATF TEMP SE 1” (A/T
fluid temperature sensor signal) indicates more than 60°C (140°F).
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection ProcedureINFOID:0000000003531632
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-71, "
Basic Inspection" .
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2”
and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with
CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-130, "
Diagnosis Procedure" .
SEF601Z

DTC P0011, P0021 IVT CONTROL
EC-149
< SERVICE INFORMATION >
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DTC P0011, P0021 IVT CONTROL
DescriptionINFOID:0000000003531648
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
COMPONENT DESCRIPTION
Intake Valve Timing Control Solenoid Valve
Intake Valve Timing (IVT) control solenoid valve is activated by ON/
OFF pulse duty (ratio) signals from the ECM.
The IVT control solenoid valve changes the oil amount and direction
of flow through intake valve timing control unit or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Intake Valve Timing Control Position Sensor
Sensor Input signal to ECM function ECM Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Intake valve
timing controlIntake valve timing control
solenoid valve Intake valve timing control position sensor Intake valve timing signal
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed*
PBIB3276E
PBIB1842E

EC-178
< SERVICE INFORMATION >
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
Component DescriptionINFOID:0000000003531672
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003531673
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000003531674
DTC Confirmation ProcedureINFOID:0000000003531675
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 5 seconds.
4. If 1st trip DTC is detected, go to EC-182, "
Diagnosis Procedure".
WITH GST
Following the procedure “WITH CONSULT-II” above.
PBIB1842E
MONITOR ITEM CONDITION SPECIFICATION
INT/V SOL (B1)
INT/V SOL (B2)• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
•No loadIdle 0% - 2%
2,000 rpm Approx. 25% - 50%
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0075
0075
(Bank 1)
Intake valve timing control
solenoid valve circuitAn improper voltage is sent to the ECM
through intake valve timing control solenoid
valve.• Harness or connectors
(Intake valve timing control solenoid valve
circuit is open or shorted.)
• Intake valve timing control solenoid valve P0081
0081
(Bank 2)
SEF058Y

INTAKE MANIFOLDEM-19
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• Tighten the intake manifold bolts in numerical order as shown.
• Install the EVAP canister purge control solenoi
d valve connector with it facing front of engine.
• Tighten the electronic throttle control actuator bolts of the electric throttle control actuator equally and diago-
nally in several steps.
• After installation perform inspection after installation.
• Install the water hose so that its overlap width for connection is between 27 mm (1.06 in) and 32 mm (1.26
in) (target: 27 mm 1.06 in).
Connecting Quick Connector of Fuel Tube
Install quick connector as follows (the steps are the same for quick connectors on both engine side and vehi-
cle side except for the quick connector cap).
1. Make sure no foreign substances are deposited in and around tube and quick connector, and they are not
damaged.
2. Thinly apply new engine oil around the fuel tube from tip end to the spool end.
3. Align center to insert quick connector straight into fuel tube. • Insert until the paint mark for engagement identification (white)
goes completely inside quick connector so that you cannot see
it from the straight side of the connected part. Use a mirror to
check this where it is not possible to view directly from the
straight side, such as quick connector on vehicle side.
• Insert fuel tube into quick connector until top spool is com- pletely inside quick connector, and 2nd level spool exposes
right below quick connector on engine side.
CAUTION:
• Hold "A" position in illustration when inserting fuel tubeinto quick connector.
• Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
• Insert until you hear a "click" sound and actually feel the engagement.
• To avoid misidentification of engagement with a similar
sound, be sure to perform the next step.
4. Pull quick connector by hand holding "A" position. Make sure it is completely engaged (connected) so that it does not come out from fuel tube.
NOTE:
Recommended pulling force is 50 N (5.1 kg, 11.2 lb).
KBIA2462E
PBIC0017E
KBIA0272E

EM-100
< SERVICE INFORMATION >
CYLINDER BLOCK
CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals on
both ends of the crankshaft.
• Measure at No. 3 journal using suitable tool.
• While rotating crankshaft, read the movement of the pointer.
• Half of the movement shows the runout.
• If measurement exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method of Measurement
• Install connecting rod bearings to the connecting rod and cap. Tighten connecting rod bolts to the specified
torque. Refer to EM-78, "
Disassembly and Assembly".
Measure inside diameter of connecting rod bearing.
(Oil clearance) = (Inside diameter of connecting rod bearing) –
(Crankshaft pin diameter)
• If clearance cannot be adjusted within the standard, grind crank-
shaft pin and use undersized bearing. Refer to EM-86, "
How to
Select Piston and Bearing".
Method of Using Plastigage
• Remove oil and dust on the crankshaft pin and surfaces of each
bearing completely.
• Cut a plastigage slightly shorter than the bearing width, and place
it in the crankshaft axial direction, avoiding oil holes.
• Install the connecting rod bearings to the connecting rod and con-
necting rod bearing cap, and tighten the connecting rod bolts to the
specified torque.
CAUTION:
Do not rotate crankshaft with plastigage installed.
• Remove the connecting rod bearing cap and bearings. Measure
the plastigage width using the scale on the plastigage bag.
NOTE:
The procedure when the measured value exceeds the repair limit is the same as that described in “Method
of Measurement”.
MAIN BEARING OIL CLEARANCE
Method of Measurement
• Install the main bearings to the cylinder block and main bearing
cap. Measure the main bearing inside diameter with the bearing
cap bolts tightened to the specified torque. Refer to EM-78, "
Disas-
sembly and Assembly".
(Oil clearance) = (Inside diameter of main bearing) – (Crankshaft
journal diameter)Limit : Less than 0.05 mm (0.002 in)
PBIC0129E
Standard : 0.020 - 0.039 mm (0.0008 - 0.0015 in)
Limit : 0.055 mm (0.0022 in)
PBIC1642E
KBIA2550E
Standard:
No. 1 and 5 journals
: 0.001 - 0.011 mm (0.00004 - 0.0004 in)
No. 2, 3 and 4 journals
PBIC1644E

CYLINDER BLOCK
EM-101
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• If measured value exceeds the repair limit, select main bearings referring to the main bearing inside diame-
ter and crankshaft journal diameter, so that the oil clearance satisfies the standard. Refer to EM-86, "
How to
Select Piston and Bearing".
Method of Using Plastigage
• Remove oil and dust on the crankshaft journal and surfaces of
each bearing completely.
• Cut a plastigage slightly shorter than the bearing width, and place
it in crankshaft axial direction, avoiding oil holes.
• Install the main bearings to the cylinder block and main bearing
cap, and tighten the main bearing bolts to the specified torque.
CAUTION:
Do not rotate crankshaft with plastigage installed.
• Remove bearing cap and bearings. Measure plastigage width
using the scale on the plastigage bag.
NOTE:
The procedure when the measured value exceeds the repair limit
is the same as that described in “Method of Measurement”.
CRUSH HEIGHT OF MAIN BEARING
• When the bearing cap is removed after being tightened to the
specified torque with main bearings installed, the tip end of the
bearing must protrude. Refer to EM-78, "
Disassembly and Assem-
bly" for the tightening procedure.
• If standard is not met, replace main bearings.
CRUSH HEIGHT OF CONNECTING ROD BEARING
• When connecting rod bearing cap is removed after being tightened
to the specified torque with the connecting rod bearings installed,
the tip end of the bearing must protrude. Refer to EM-78, "
Disas-
sembly and Assembly" for tightening procedure.
• If standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT DIAMETER
: 0.007 - 0.017 mm (0.0003 - 0.0007 in)
Limit:
No.1 and 5 journals
: 0.021 mm (0.0008 in)
No. 2, 3 and 4 journals
: 0.027 mm (0.0011 in)
KBIA2551E
Standard : There must be crush height
SEM502G
Standard : There must be crush height.
PBIC1646E

GI-48
< SERVICE INFORMATION >
IDENTIFICATION INFORMATION
ENGINE SERIAL NUMBER
TRANSFER SERIAL NUMBER
AUTOMATIC TRANSMISSION NUMBER
DimensionsINFOID:0000000003531505
Unit: mm (in)
Wheels & TiresINFOID:0000000003531506
LAIA0044E
LAIA0048E
PAIA0054E
Drive type2WD 4WD
Overall length 5255 (206.9) 5255 (206.9)
Overall width 2001 (78.8) 2001 (78.8)
Overall height (with roof rack) 1976.8 (77.0) 1997.7 (77.8)
Front tread width 1725 (67.9) 1725 (67.9)
Rear tread width 1725 (67.9) 1725 (67.9)
Wheelbase 3130 (123.2) 3130 (123.2)
Minimum Running Ground Clearance (at front suspen-
sion)With standard
undercover254.8 (10.03) 273.7 (10.77)
With oil pan skid
plate250.5 (9.86) 269.5 (10.61)

IDX-8
ALPHABETICAL INDEX
Three way catalyst ............................................ EM-21
Three way catalyst function (Bank 1) ............... EC-376
Three way catalyst function (Bank 2) ............... EC-376
Three way catalyst precautions ............................ GI-5
Throttle control motor ....................................... EC-601
Throttle control motor relay .............................. EC-589
Throttle position sensor (TPS) .. EC-224, EC-343, EC-
514, EC-516, EC-621
Throttle valve closed position learning ............... EC-80
Tie-rod ............................................................... PS-15
Timing chain ..................................................... EM-37
Tire rotation ....................................................... MA-28
Tire size .............................................................. GI-51
Torque converter installation AT-239, AT-240, AT-243,
AT-244
Torque convertor clutch solenoid valve ... AT-114, AT-
116
Tow truck towing ................................................. GI-44
Towing point ....................................................... GI-45
TPS1 - Wiring diagram .................................... EC-345
TPS2 - Wiring diagram .................................... EC-226
TPS3 - Wiring diagram .................................... EC-623
Traction control system - Wiring diagram ....... BRC-16
Transfer control device ............. TF-75, TF-79, TF-138
Transfer control unit inspection table ................. TF-35
Transfer dropping resistor .................................. TF-89
Transfer fluid temperature sensor TF-103, TF-154, TF-
167
Transfer motor .................................... TF-101, TF-142
Transfer motor relay ........................................ TF-101
Transfer oil replacement ................................... MA-24
Transfer serial number ........................................ GI-50
Transmission serial number ................................ GI-50
Tread-FR&RR (Dimensions) ............................... GI-51
Trim ..................................................................... EI-35
TRNSCV - Wiring diagram .................. BL-130, BL-146
Trouble diagnoses .............................................. GI-11
Turbine revolution sensor ................................ AT-105
TURN - Wiring diagram ...................................... LT-67
Turn signal lamp ................................................. LT-63
Two trip detection logic ...................................... EC-49
Two-pole lift ........................................................ GI-43
V
Vacuum hose (brake system) ............................ BR-20
Vacuum hose drawing (Engine control) ........... EC-106
Valve clearance ................................................ EM-55
Valve guide ....................................................... EM-69
Vanity mirror lamp ............................................. LT-110
VDC (vehicle dynamics control) ........................ BRC-7
VDC -Wiring diagram ...................................... BRC-16
Vehicle identification number .............................. GI-49
Vehicle recovery (freeing a stuck vehicle) .......... GI-45
Vehicle security (theft warning) system ............. BL-67
Vehicle speed sensor (VSS) ............................ EC-464
VEHSEC - Wiring diagram ................................. BL-71
VENT/V - Wiring diagram .................. EC-412, EC-419
VIN registration .................................................. EC-79
Viscosity number (SAE) .................................... MA-12
VSS A/T - Wiring diagram .................. AT-107, AT-109
W
W/ANT - Wiring diagram .................................... AV-59
Wait detection switch ......................................... TF-68
WARN - Wiring diagram ...................................... DI-29
Warning chime .................................................... DI-38
Warning lamps .................................................... DI-28
Washer, front ..................................................... WW-4
Washer, rear .................................................... WW-29
Water pump ...................................................... CO-19
Water temperature gauge ..................................... DI-5
Wheel alignment (front) ..................................... FSU-6
Wheel alignment (rear) ................................... RSU-25
Wheel bearing (front) ........................................ FAX-5
Wheel bearing (rear) ......................................... RAX-5
Wheel hub (rear) ............................................... RAX-5
Wheel size .......................................................... GI-51
Wheelbase (Dimensions) .................................... GI-51
Width (Dimensions) ............................................. GI-51
WINDOW - Wiring diagram .............................. GW-22
Window, door ...................................... GW-62, GW-65
Windshield ....................................................... GW-11
WIP/R - Wiring diagram ................................... WW-33
WIPER - Wiring diagram .................................... WW-8
Wiper, front ........................................................ WW-4
Wiper, rear ....................................................... WW-29
Wiring Diagram (Cell code) list ......................... PG-62
Wiring diagrams .................................................. GI-15
WT-T/WARN - Wiring diagram .......................... WT-11