length INFINITI QX56 2006 Factory Service Manual

QUICK REFERENCE CHART: QX56
2006

Rear Wheel AlignmentELS001QS
BrakeELS001QT
Unit: mm (in)
Camber
Degree minute (decimal degree)
Minimum
0° 0 ′ (0 °)
Nominal - 0° 30′ (-0.5 °)
Maximum - 1° 0 ′ (-1.0 °)
Cross camber 0° 45 ′ (0.75 °)
To e - i n Distance (A - B)
Minimum
0 mm (0 in)
Nominal 3.3 mm (0.130 in)
Maximum 6.6 mm (0.260 in)
Cross toe 2 mm (0.079 in)
Angle (left, right)
Degree minute (decimal degree) Minimum
0° 0 ′ (0 °)
Nominal 0° 7 ′ (0.11 °)
Maximum 0° 14 ′ (0.22 °)
Cross toe 0° 8 ′ (0.14 °)
SFA234AC
Front brake Brake model CLZ31VCAD41VA
Rotor outer diameter × thickness 320 × 26 (12.60 × 1.02) 350 x 30 (13.78 x 1.181)
Pad Length × width × thickness 111 . 0
× 73.5 × 11.88 (4.73 ×
2.894 × 0.468) 151.6 x 56.5 x 12 (5.968 x
2.224 x 0.47)
Cylinder bore diameter 51 (2.01)51 (2.01)
Rear brake Brake model AD14VE
Rotor outer diameter × thickness 320 × 14 (12.60 × 0.55)
Pad Length × width × thickness 83.0 × 33.0 × 8.5 (3.268 × 1.299 × 0.335)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model
C215T
Diaphragm diameter 215 (8.46)
Recommended brake fluid Genuine NISSAN Super Heavy Duty Brake Fluid or equivalent

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

AT-236
ON-VEHICLE SERVICE
Revision: November 20092006 QX56
8. Install bolts A, B and C in control valve with TCM.
9. Tighten bolt 1, 2 and 3 temporarily to prevent dislocation. Then
tighten them in order (1 → 2 → 3), and then tighten other bolts.
10. Tighten control valve with TCM bolts to the specified torque. Refer to AT- 2 5 0 , "
Components" .
11. Connect A/T fluid temperature sensor 2 connector.
12. Securely fasten terminal cord assembly and A/T fluid tempera- ture sensor 2 harness with terminal clips.
Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA5139E
SCIA5140E
SCIA5023E
SCIA5446E

DISASSEMBLYAT-271
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
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

ASSEMBLYAT-319
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
g. Install control valve with TCM in transmission case.
CAUTION:

Make sure that turbine revolution sensor securely installs
into turbine revolution sensor hole.

Adjust A/T assembly harness connector of control valve
with TCM to terminal hole of transmission case.

Hang down revolution sensor harness toward outside so
as not to disturb installation of control valve with TCM.

Assemble it so that manual valve cutout is engaged with
manual plate projection.
h. Install bolts A, B and C to control valve with TCM.
i. Tighten bolt 1, 2 and 3 temporarily to prevent dislocation. Then tighten them in order (1 → 2 → 3), and then tighten other bolts.
j. Tighten control valve with TCM bolts to the specified torque. Refer to AT- 2 5 0 , "
Components" .
10. Connect A/T fluid temperature sensor 2 connector.
SCIA5034E
SCIA5035E
Bolt symbol Length: mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
SCIA5025E
SCIA5037E
SCIA5023E

BL-114
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start
engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 seconds.
8. Release the back door handle switch.
9. Within 8 seconds of the back door warning chime sounding, press the power liftgate switch 5 times in rapid succession.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. Immediately close the back door manually.
13. Press and release the power liftgate switch to activate operating check mode.
Self-diagnosis results are indicated by the back door warning chime.
Turn ignition switch OFF to end input signal check mode.
Diagnosis ChartEIS00614
Back door warning chime order Back door warning chime length
Start self-diagnosis 1.5 seconds
OK NG
1. Operating conditions diagnosis 0.5 seconds0.2 seconds
2. Back door encoder diagnosis 0.5 seconds0.2 seconds
3. Back door clutch diagnosis 0.5 seconds0.2 seconds
4. Back door motor diagnosis 0.5 seconds0.2 seconds
5. Cinch latch motor diagnosis 0.5 seconds0.2 seconds
Restart self-diagnosis 1.5 seconds
ItemNG ResultRefer to
1. Operating conditions diagnosis result One of the following operating conditions no
longer met: ignition switch ON, back door
close switch (CANCEL) ON, A/T selector lever
in P position—
2. Back door encoder diagnosis result Sensor diagnosis/short, pulse signal, pulse
signal directionBL-135
3. Back door clutch diagnosis result
Back door clutch does not operateBL-135
4. Back door motor diagnosis result Back door motor does not operate (no operat-
ing current)BL-135
5. Cinch latch motor diagnosis result Cinch latch motor does not operate (no oper-
ating current)
BL-135
Symptom
Suspect systemsRefer to
Automatic operations are not executed from the back door fully
closed or fully open position.
(Auto closure operates normally.) Power liftgate switch system inspection
BL-116
Park switch —
Power window serial link BL-112
Pinch strip system inspectionBL-121
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal.) Power liftgate switch system inspection
BL-116Back door close switch system inspectionBL-118
Auto back door power supply and ground cir-
cuit system inspection.BL-115
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations.) Pinch strip system inspection
BL-121

BL-174
BODY REPAIR
Revision: November 20092006 QX56
DESCRIPTION

All dimensions indicated in the figures are actual.

When using a tracking gauge, adjust both pointers to equal length. Then check the pointers and gauge
itself to make sure there is no free play.

When a measuring tape is used, check to be sure there is no elongation, twisting or bending.

Measurements should be taken at the center of the mounting holes.

An asterisk (*) following the value at the measuring point indicates that the measuring point on the other
side is symmetrically the same value.

The coordinates of the measurement points are the distances measured from the standard line of "X", "Y"
and "Z".
LIIA1506E

BR-18
BRAKE BOOSTER
Revision: November 20092006 QX56
Removal and InstallationEFS004WD
REMOVAL
CAUTION:

Be careful not to deform or bend brake piping while removing and installing brake booster.

Replace clevis pin if it is damaged.

Be careful not to damage brake booster stud bolt threads. If brake booster is tilted or inclined dur-
ing installation, dash panel may damage the threads.

Attach the check valve in the correct direction.
1. Remove engine room cover with power tool. Refer to EM-12, "
Removal and Installation" .
2. Remove engine air duct assembly. Refer to EM-15, "
Removal and Installation" .
3. Remove brake piping from brake master cylinder.
4. Remove brake master cylinder. Refer to BR-15, "
Removal and Installation" .
5. Remove vacuum hose from brake booster. Refer to BR-20, "
VACUUM LINES" .
6. Disconnect active boost and delta stroke sensor harness connectors from brake booster assembly.
7. Remove brake pedal attachment snap pin and clevis pin from inside the vehicle.
8. Remove nuts on brake booster and brake pedal assembly.
9. Remove brake booster assembly from dash panel.
INSTALLATION
1. Loosen lock nut to adjust input rod length so that the length B (in the figure) satisfies the specified value.
2. After adjusting “B”, temporarily tighten lock nut and install
booster assembly to the vehicle.

Install a gaskets and spacer block between booster assembly
and the dash panel.
3. Connect brake pedal with clevis of input rod.
4. Install pedal bracket mounting nuts and tighten them to the specified torque.
5. Install brake piping from brake master cylinder to ABS actuator. Refer to BR-12, "
Hydraulic Circuit" .
1. Reservoir tank 2. Brake master cylinder 3. Gasket
4. Brake pedal 5. Lock nut 6. Spacer block
7. Brake booster 8. Active booster 9. Delta stroke sensor
BFIA0003E
Length “B” : 151 mm (5.94 in)
WFIA0382E

BR-32
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: November 20092006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEFS004WQ
Unit: mm (in)
Brake PedalEFS004WR
Brake BoosterEFS004WS
Check ValveEFS004WT
Front Disc BrakeEFS004WU
Front brake Brake modelCLZ31VCAD41VA
Rotor outer diameter × thickness 320 × 26 (12.60 × 1.02) 350 x 30 (13.78 x 1.181)
Pad Length × width × thickness 111 . 0
× 73.5 × 11.88 (4.73 ×
2.894 × 0.468) 151.6 x 56.5 x 12 (5.968 x
2.224 x 0.47)
Cylinder bore diameter 51 (2.01)51 (2.01)
Rear brake Brake model AD14VE
Rotor outer diameter × thickness 320 × 14 (12.60 × 0.55)
Pad Length × width × thickness 83.0 × 33.0 × 8.5 (3.268 × 1.299 × 0.335)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model
C215T
Diaphragm diameter 215 (8.46)
Recommended brake fluid Genuine NISSAN Super Heavy Duty Brake Fluid or equivalent
Brake pedal height (from dash lower panel top surface) 182.3 − 192.3 mm (7.18 − 7.57 in)
Depressed pedal height [under a force of 490 N (50 kg-f, 110 lb-f)
with engine running] More than 90.3 mm (3.55 in)
Clearance between stopper rubber and the threaded end of stop
lamp switch 0.74
− 1.96 mm (0.029 − 0.077 in)
Pedal play 3 − 11 mm (0.12 − 0.43 in)
Output rod installation standard dimension 15.6 − 15.9 mm (0.614 − 0.626 in)
Vacuum leakage
[at vacuum of – 66.7 kPa(– 500 mmHg, – 19.69 inHg)] Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
Brake model
CLZ31VCAD41VA
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)

EC-24Revision: November 2009
ENGINE CONTROL SYSTEM
2006 QX56
Multiport Fuel Injection (MFI) SystemUBS00KZ7
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.


During warm-up

When starting the engine

During acceleration

Hot-engine operation

When selector lever is changed from N to D

High-load, high-speed operation


During deceleration

During high engine speed operation
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS) Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery Battery voltage*
3
Power steering pressure sensorPower steering operation
Heated oxygen sensor 2 Density of oxygen in exhaust gas*
1
ABS actuator and electric unit (control unit)VDC/TCS operation command*2
Air conditioner switch
Air conditioner operation*2
Wheel sensorVehicle speed*2