height INFINITI QX56 2006 Factory Service Manual

2006
QUICK REFERENCE CHART: QX56

Front Disc Brake - Repair LimitsELS001QU
Rear Disc Brake - Repair LimitsELS001QU
Brake PedalELS001QV
Unit: mm (in)
Refill CapacitiesELS001QW
Brake modelCLZ31VCAD41VA
Brake pad Standard thickness (new)
11.88 mm (0.468 in)12 mm (0.47 in)
Repair limit thickness 1.0 mm (0.039 in)1.0 mm (0.039 in)
Disc rotor Standard thickness (new)
26.0 mm (1.024 in) 30.0 mm (1.181 in)
Repair limit thickness 24.5 mm (0.965 in) 28.5 mm (1.122 in)
Maximum uneven wear (measured at 8 positions) 0.015 mm (0.0006 in)
Runout limit (with it attached to the vehicle) 0.03 mm (0.001 in)
Brake model AD14VE
Brake pad Standard thickness (new)
12.13 mm (0.478 in)
Repair limit thickness 1.0 mm (0.039 in)
Disc rotor Standard thickness (new)
14.0 mm (0.551 in)
Repair limit thickness 12.0 mm (0.472 in)
Maximum uneven wear (measured at 8 positions) 0.015 mm (0.0006 in)
Runout limit (with it attached to the vehicle) 0.05 mm (0.002 in)
Brake pedal height (from dash panel top surface) 182.3 − 192.3 (7.18 − 7.57)
Depressed pedal height [under a force of 490 N (50 kg, 110 lb) with engine running] More than 90.3 (3.55)
Clearance between stopper rubber and the threaded end of stop lamp switch 0.74 − 1.96 (0.029 − 0.077)
Pedal play 3 − 11 (0.12 − 0.43)
Description Capacity (Approximate)
Metric US measure Imp measure
Fuel 105.8 28 gal 23 1/4 gal
Engine oil
(drain and refill) With oil filter change
6.2 6 1/2 qt 5 1/2 qt
Without oil filter change 5.9 6 1/4 qt 5 1/4 qt
Dry engine (engine overhaul) 7.6 8 qt
6 3/4 qt
Cooling system With reservoir at MAX level
14.4 3 3/4 gal 3 1/8 gal
Automatic transmission fluid (ATF) 10.6 11 1/4 qt 9 3/8 qt
Rear final drive oil 1.75 3 3/4 pt 3 1/8 pt
Transfer fluid 3.0 3 1/8 qt 2 5/8 qt
Front final drive oil 1.6 3 3/8 pt 2 7/8 pt
Power steering fluid (PSF) 1.0 2 1/8 pt 1 3/4 pt
Windshield washer fluid 4.5 1 1/4 gal 1 gal
Air conditioning system refrigerant 1.08 ± 0.05 kg 2.38 ± 0.11 lb 2.38 ± 0.11 lb
Air conditioning system lubricants 290 m9.8 fl oz 10.2 fl oz

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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ASCD
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ..... 3
Description .......................................................... ..... 3
ICC
PRECAUTIONS ..................................................... ..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
Precautions for ICC System Service ................... ..... 4
PREPARATION ...................................................... ..... 5
Special Service Tool ............................................ ..... 5
DESCRIPTION ....................................................... ..... 6
Outline ................................................................. ..... 6
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE .............................................................. ..... 6
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................ ..... 6
BRAKE ASSIST (WITH PREVIEW FUNCTION) ..... 6
System Diagram .................................................. ..... 6
Components Description ..................................... ..... 7
CAN Communication ........................................... ..... 7
SYSTEM DESCRIPTION ................................. ..... 7
Switch Operation ................................................. ..... 7
ICC System Display ............................................ ..... 8
ACTION TEST ....................................................... ..... 9
ICC System Running Test ................................... ..... 9
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE .............................................................. ..... 9
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................ ... 10
LASER BEAM AIMING ADJUSTMENT ................ ... 12
Outline of Laser Beam Aiming Adjustment Proce-
dure ..................................................................... ... 12
Preparation .......................................................... ... 12
Setting up the ICC Target Board ......................... ... 12
ADJUSTING HEIGHT OF THE TARGET ......... ... 12
ADJUSTING THE POSITION OF THE TARGET
BOARD STRING .............................................. ... 13POSITIONING THE TARGET ..........................
... 13
Sensor Adjustment .............................................. ... 14
CHECK AFTER THE ADJUSTMENT ............... ... 17
ELECTRICAL UNITS LOCATION ......................... ... 18
Component Parts and Harness Connector Location ... 18
WIRING DIAGRAM ................................................ ... 19
Schematic ............................................................ ... 19
Wiring Diagram — ICC — ................................... ... 20
TERMINALS AND REFERENCE VALUE .............. ... 24
Terminals and Reference Values for ICC Unit ..... ... 24
Terminals and Reference Values for ICC Sensor ... 24
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION ....................................................................... ... 25
Work Flow ............................................................... 25
CONSULT-II Function (ICC) ................................ ... 26
CONSULT-II OPERATION ................................ ... 26
WORK SUPPORT ............................................ ... 27
SELF-DIAGNOSTIC RESULTS ........................ ... 28
DATA MONITOR .............................................. ... 28
ACTIVE TEST ..................................................... 30
Self-Diagnostic Function ...................................... ... 31
WITH CONSULT-II ........................................... ... 31
WITHOUT CONSULT-II .................................... ... 32
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
WILL NOT RUN ................................................ ... 33
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 36
Diagnostic Trouble Code (DTC) Chart ................ ... 36
DTC 11 CONTROL UNIT .................................... ... 37
DTC 12 VDC CONTROL UNIT ............................ ... 37
DTC 20 CAN COMM CIRCUIT ............................ ... 38
DTC 31 POWER SUPPLY CIR1, DTC 34 POWER
SUPPLY CIR2 ........................................................ 38
DTC 41 VHCL SPEED SE CIRC ......................... ... 39
DTC 43 VDC/TCS/ABS CIRC ............................. ... 39
DTC 45 BRAKE SW/STOP L SW ........................ ... 40
DTC 46 OPERATION SW CIRC .......................... ... 41
DTC 74 LASER BEAM OFF CNTR ..................... ... 42
DTC 90 STOP LAMP RLY FIX ............................... 43
DTC 92 ECM CIRCUIT ........................................ ... 47

ACS-12
[ICC]
LASER BEAM AIMING ADJUSTMENT
Revision: November 20092006 QX56
LASER BEAM AIMING ADJUSTMENTPFP:00026
Outline of Laser Beam Aiming Adjustment ProcedureEKS00BLN
CAUTION:

The laser beam aiming adjustment cannot be performed without CONSULT-II.

The laser beam aiming adjustment must be performed every time the ICC sensor is removed,
installed or has been moved as a result of a collision.
1. Prepare the vehicle and the work area.
2. Set up the ICC target board. For details, refer to Technical Service Bulletin.
3. Adjust the sensor following the procedure on CONSULT-II.
4. Check system operation after the adjustment.
PreparationEKS00BLO

Place the vehicle on level ground. Shift the transmission into "P" position and release the parking brake.

Adjust the tire pressure to the specified value.

See that there is no load in the vehicle. Coolant, engine oil and fuel should be filled to correct level.

Check that the vehicle suspension has been adjusted to the standard height by the load leveling rear air
suspension system. Refer to RSU-12, "
Basic Inspection" .

Clean the sensor with a soft cloth.
Setting up the ICC Target BoardEKS00BLP
CAUTION:
Accuracy in setting up the ICC target board is essential for the laser beam aiming adjustment.
For details, refer to Technical Service Bulletin.
ADJUSTING HEIGHT OF THE TARGET
1. Attach a triangle scale as shown.Tool number : KV99110100 (J-45718)
LKIA0632E
WKIA1849E

LASER BEAM AIMING ADJUSTMENTACS-13
[ICC]
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2. Adjust the height of the target stand so that the point of the trian-
gle aims above the center of the ICC sensor.
ADJUSTING THE POSITION OF THE TARGET BOARD STRING
1. Attach a scale or straightedge (at least 350 mm [14 in] or
longer).
2. Suspend a string with a weight on the end 218 mm (8.6 in) to the left side of the target board center.
POSITIONING THE TARGET
1. Suspend a string with weights on each end over the centerline of the vehicle. The string should lay overthe center of the front and back bumpers. Mark these centerpoints on the ground at each weight.
2. Connect the two center points using a string. Extend the string an additional 5 m (16 ft) beyond the front centerpoint and mark
the floor. Position the target board weight on this mark.
3. Relocate the suspended string from the left side of the target board to the center of the target board. Mark this point on the ground.
WKIA2039E
SKIA1211E
WKIA2040E
WKIA1851E

AT-232
ON-VEHICLE SERVICE
Revision: November 20092006 QX56
9. Disconnect revolution sensor connector.
CAUTION:
Be careful not to damage connector.
10. Straighten terminal clips to free revolution sensor harness.
11. Remove bolts A, B and C from control valve with TCM.
12. Remove control valve with TCM from transmission case. CAUTION:
Be careful with the manual valve notch and manual plate
height. Remove it vertically.
13. Remove A/T fluid temperature sensor 2 with bracket from con- trol valve with TCM.
SCIA5024E
SCIA7022E
Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA5139E
SCIA5142E
SCIA5301E

DISASSEMBLYAT-271
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32. Straighten terminal clips to free revolution sensor harness.
33. Remove bolts A, B and C from control valve with TCM.
34. Remove control valve with TCM from transmission case.
CAUTION:
When removing, be careful with transmission assembly ter-
minal connector and the manual valve notch and manual
plate height. Remove it vertically.
35. Remove A/T fluid temperature sensor 2 with bracket from con- trol valve with TCM.
36. Remove bracket from A/T fluid temperature sensor 2.
SCIA7023E
Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA5025E
SCIA5308E
SCIA5301E
SCIA5264E

NAVIGATION SYSTEMAV-85
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Revision: November 2009 2006 QX56
MAP-MATCHING
Map-matching is a function that repositions the vehicle on the road
map when a new location is judged to be the most accurate. This is
done by comparing the current vehicle position, calculated by the
method described in the position detection principle, with the road
map data around the vehicle, read from the map DVD-ROM stored in
the DVD-ROM drive.
Therefore, the vehicle position may not be corrected after the vehicle
is driven over a certain distance or time in which GPS information is
hard to receive. In this case, the current-location mark on the display
must be corrected manually.
CAUTION:
The road map data is based on data stored in the map DVD-
ROM.

In map-matching, alternative routes to reach the destination will
be shown and prioritized, after the road on which the vehicle is
currently driven has been judged and the current-location mark
has been repositioned.
If there is an error in distance and/or direction, the alternative
routes will be shown in different order of priority, and the wrong
road can be avoided.
If two roads are running in parallel, they are of the same priority.
Therefore, the current-location mark may appear on either of
them alternately, depending on maneuvering of the steering
wheel and configuration of the road.

Map-matching does not function correctly when the road on
which the vehicle is driving is new and not recorded in the map
DVD-ROM, or when the road pattern stored in the map data and
the actual road pattern are different due to repair.
When driving on a road not present in the map, the map-match-
ing function may find another road and position the current-loca-
tion mark on it. Then, when the correct road is detected, the
current-location mark may leap to it.

Effective range for comparing the vehicle position and travel
direction calculated by the distance and direction with the road
data read from the map DVD-ROM is limited. Therefore, when
there is an excessive gap between the current vehicle position
and the position on the map, correction by map-matching is not possible.
GPS (GLOBAL POSITIONING SYSTEM)
GPS (Global Positioning System) has been developed and con-
trolled by the US Department of Defense. The system utilizes GPS
satellite (NAVSTAR), sending out radio waves while flying on an orbit
around the earth at the height of approx. 21,000 km (13,000 miles).
The GPS receiver calculates the vehicle's position in three dimen-
sions (latitude/longitude/altitude) according to the time lag of the
radio waves received from four or more GPS satellites (three-dimen-
sional positioning). If radio waves were received only from three
GPS satellites, the GPS receiver calculates the vehicle's position in
two dimensions (latitude/longitude), utilizing the altitude data calcu-
lated previously by using radio waves from four or more GPS satel-
lites (two-dimensional positioning).
Accuracy of the GPS will deteriorate under the following conditions.

In two-dimensional positioning, the GPS accuracy will deteriorate when the altitude of the vehicle position
changes.

There may be an error of approximately 10 m (30 ft) in position detected by three-dimensional positioning,
which is more accurate than two-dimensional positioning. The accuracy can be even lower depending on
the arrangement of the GPS satellites utilized for the positioning.
SEL685V
SEL686V
SKIA0613E
SEL526V

BL-1
BODY, LOCK & SECURITY SYSTEM
I BODY
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
Precautions for work ................................................ 4
PREPARATION ...................................................... ..... 5
Special service tool ............................................. ..... 5
Commercial Service Tool .................................... ..... 5
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 6
Work Flow ................................................................ 6 CUSTOMER INTERVIEW ................................ ..... 6
DUPLICATE THE NOISE AND TEST DRIVE .. ..... 7
CHECK RELATED SERVICE BULLETINS ...... ..... 7
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ................................................. ..... 7
REPAIR THE CAUSE ...................................... ..... 7
CONFIRM THE REPAIR .................................. ..... 8
Generic Squeak and Rattle Troubleshooting ...... ..... 8
INSTRUMENT PANEL ..................................... ..... 8
CENTER CONSOLE ........................................ ..... 8
DOORS ............................................................ ..... 8
TRUNK ............................................................. ..... 9
SUNROOF/HEADLINING ................................ ..... 9
OVERHEAD CONSOLE (FRONT AND REAR) ..... 9
SEATS .............................................................. ..... 9
UNDERHOOD .................................................. ..... 9
Diagnostic Worksheet ......................................... ... 10
HOOD .................................................................... ... 12
Fitting Adjustment ............................................... ... 12
CLEARANCE AND SURFACE HEIGHT
ADJUSTMENT ................................................. ... 13
HOOD LOCK ADJUSTMENT .......................... ... 13
Removal and Installation of Hood Assembly ....... ... 13
Removal and Installation of Hood Lock Control .. ... 14
REMOVAL ........................................................ ... 14
INSTALLATION ................................................ ... 15
Hood Lock Control Inspection ............................. ... 15
POWER DOOR LOCK SYSTEM ........................... ... 16
Component Parts and Harness Connector Location ... 16
System Description ............................................. ... 17OUTLINE ..........................................................
... 18
Schematic ............................................................ ... 19
Wiring Diagram — D/LOCK — ............................ ... 20
Terminals and Reference Value for BCM ............ ... 25
Work Flow ............................................................... 25
CONSULT–II Function (BCM) ............................. ... 26
CONSULT–II INSPECTION PROCEDURE ...... ... 26
DATA MONITOR .............................................. ... 27
ACTIVE TEST ..................................................... 28
Trouble Diagnoses Symptom Chart .................... ... 29
BCM Power Supply and Ground Circuit Check ... ... 29
Door Switch Check ................................................. 31
Key Switch (Insert) Check ................................... ... 33
Door Lock/Unlock Switch Check ............................ 34
Glass Hatch Switch Circuit Inspection ................. ... 36
Front Door Lock Assembly LH (Actuator) Check . ... 38
Front Door Lock Actuator RH Check ................... ... 39
Rear Door Lock Actuator RH/LH Check .............. ... 40
Glass Hatch Lock Actuator Check .......................... 41
Front Door Lock Assembly LH (Key Cylinder Switch)
Check .................................................................. ... 42
REMOTE KEYLESS ENTRY SYSTEM .................. ... 44
Component Parts and Harness Connector Location ... 44
System Description .............................................. ... 45
INPUTS ............................................................ ... 45
OPERATING PROCEDURE ............................. ... 46
CAN Communication System Description ........... ... 48
Schematic ............................................................ ... 49
Wiring Diagram — KEYLES — ............................ ... 50
......................................................................... ... 50
......................................................................... ... 51
......................................................................... ... 52
Terminals and Reference Value for BCM ............ ... 53
Terminals and Reference Value for IPDM E/R .... ... 54
CONSULT-II Function (BCM) .............................. ... 55
CONSULT-II Inspection Procedure ...................... ... 55
“MULTI REMOTE ENT” .................................... ... 55
CONSULT-II Application Items ............................ ... 56
“MULTI REMOTE ENT” .................................... ... 56
Trouble Diagnosis Procedure .............................. ... 59

HOODBL-13
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CLEARANCE AND SURFACE HEIGHT ADJUSTMENT
1. Remove the front grille. Refer to EI-17, "FRONT GRILLE" .
2. Remove the hood lock assembly and adjust the height by rotating the bumper rubber until the hood clear- ance of hood and fender becomes 1 mm (0.04 in) lower than fitting standard dimension.
3. Temporarily tighten the hood lock, and position it by engaging it with the hood striker. Check the lock and striker for looseness, and tighten the lock mounting bolt to the specified torque.
4. Adjust the clearance and surface height of hood and fender according to the fitting standard dimension by rotating right and left bumper rubbers.
CAUTION:
Adjust right/left gap between hood and each part to the following specification.
5. Install the front grille. Refer to EI-17, "
FRONT GRILLE" .
HOOD LOCK ADJUSTMENT
1. Remove the front grille. Refer to EI-17, "FRONT GRILLE" .
2. Move the hood lock to the left or right so that striker center is vertically aligned with hood lock center (when viewed from vehicle front).
3. Make sure the secondary latch is properly engaged with the sec- ondary striker with hood's own weight by dropping it from
approx. 200 mm (7.87 in) height or by pressing it lightly approx.
3 kg (29 N, 7lb).
CAUTION:
Do not drop the hood from 300 mm (11.81 in) height or
higher.
4. After adjusting hood lock, tighten the lock bolts.
5. Install the front grille. Refer to EI-17, "
FRONT GRILLE" .
Removal and Installation of Hood AssemblyEIS004Q8
1. Support the hood striker with proper material to prevent it from
falling.
WARNING:
Body injury may occur if no supporting rod is holding the
hood open when removing the damper stay.
2. Remove the hinge nuts from the hood to remove the hood assembly.
CAUTION:
Operate with two workers, because of its heavy weight.
Installation is in the reverse order of removal. Hood and headlamp (B–B) : Less than 2.0 mm
PIIA3806E
LIIA1443E

HOODBL-15
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Revision: November 2009 2006 QX56
INSTALLATION
1. Pull the hood lock cable through the dash lower hole into the engine room.
Be careful not to bend the cable too much, keeping the radius
100mm (3.94 in) or more.
2. Make sure the cable is not offset from the positioning grommet, and push the grommet into the dash lower hole securely.
3. Apply sealant around the grommet at * mark.
4. Install the primary and secondary cables securely to the hood lock.
5. Install the hood lock and the secondary hood lock release assemblies.
6. Check the hood lock adjustment and hood opener operation. Refer to BL-12, "
Fitting Adjustment" .
Hood Lock Control InspectionEIS004QA
CAUTION:
If the hood lock cable is bent or deformed, replace it.
1. Remove the front grille. Refer to EI-17, "
FRONT GRILLE" .
2. Make sure the secondary latch is properly engaged with the sec- ondary striker with hood's own weight by dropping it from
approx. 200 mm (7.87 in) height.
3. While operating the hood opener, carefully make sure the front end of the hood is raised by approx. 20 mm (0.79 in). Also make
sure the hood opener returns to the original position.
4. Check the hood lock lubrication condition. If necessary, apply “body grease ” to the points shown in the figure.
5. Install the front grille. Refer to EI-17, "
FRONT GRILLE" .
PIIA0173E
PIIA0174E
PIIA1086E
PIIA0176E