lock INFINITI QX56 2006 Factory Service Manual

TROUBLE DIAGNOSISRSU-15
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Revision: November 2009 2006 QX56
WORK SUPPORT
Operation Procedure
1. After turning OFF the ignition switch, connect CONSULT-II and the CONSULT-II CONVERTER to the data
link connector.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
2. Touch "START (NISSAN BASED VHCL)", "AIR LEVELIZER", "WORK SUPPORT" in order on the CON- SULT-II screen.
If "AIR LEVELIZER" is not indicated, go to GI-40, "
CONSULT-II Data Link Connector (DLC) Circuit" .
CAUTION:
When "START (NISSAN BASED VHCL)" is touched immediately after starting the engine or turning
on the ignition switch, "AIR LEVELIZER" might not be displayed in the "SELECT SYSTEM" screen.
In this case, repeat the operation from step 2.
3. Select "STANDARD HEIGHT LEVEL", "ADJUST HEIGHT INI" or "CLEAR HEIGHT INI" on the "SELECT WORK ITEM" screen.
NOTE:
Read and perform screen instructions if "STANDARD HEIGHT LEVEL" or "ADJUST HEIGHT INI" is
selected.
4. Touch "START" to begin the desired work support.
Display Item List
Vehicle height adjusting trouble
(compressor)
[C1804] Continuous compressor relay ON time is more than 120 sec-
onds. Refer to
RSU-21, "Compres-
sor Motor, Compressor
Motor Relay and Circuit
Inspection" .
Vehicle height adjusting trouble
(exhaust solenoid)
[C1805] Continuous exhaust solenoid ON time is more than 120 seconds. Refer to
RSU-19, "
Exhaust
Valve Solenoid System
Inspection" .
Vehicle height sensor locking trou-
ble
[C1806] Output sensor voltage variation ±
0.02V is more than 100 hour
when vehicle height range is normal. Refer to
RSU-18, "
Height
Sensor System Inspection" .
Sensor 5V trouble
[C1807] Sensor reference voltage is less than 0.8V or more than 6V for
20 seconds. Refer to
RSU-18, "
Height
Sensor System Inspection" .
Integral time trouble by supplying
air
[C1808] Integral discontinuous time on the compressor is more than 180
seconds. Refer to
RSU-21, "
Compres-
sor Motor, Compressor
Motor Relay and Circuit
Inspection" .
Self-diagnostic item
Malfunction detecting condition Check system
ItemDescription Condition
STANDARD HEIGHT LEVEL Resets the vehicle height to the initialization flag
setting stored in the suspension control unit. Vehicle unladen
RSU-49, "
Wheelarch Height
(Unladen*1 )" , set in a horizontal position and
not moving.
NOTE:
Do not take your eyes off the vehicle while
CONSULT-II is processing.
ADJUST HEIGHT INI Sets the height initialization flag in the suspension
control unit when the control unit has been replaced
or when the initialization flag has been cleared
using the "CLEAR HEIGHT INI" procedure. Vehicle unladen
RSU-49, "
Wheelarch Height
(Unladen*1 )" . Move vehicle forward and
backward approx. 5 m (16.4 ft) and rock vehi-
cle from side to side.
NOTE:
Do not move vehicle while CONSULT-II is pro-
cessing.
CLEAR HEIGHT INI Clears the initialization flag in the suspension con-
trol unit. Vehicle unladen
RSU-49, "
Wheelarch Height
(Unladen*1 )" .

REAR SUSPENSION MEMBERRSU-33
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Revision: November 2009 2006 QX56
4. Disconnect the rear load leveling air suspension hoses at the
rear load leveling air suspension compressor assembly.

To disconnect the hoses, push in on the lock ring using a suit-
able tool and pull the hose out.
5. Remove both of the rear wheel and tire assemblies using power tool.
6. Remove the brake caliper without disconnecting the brake hoses, using power tool. Reposition the brake caliper out of the
way using a suitable wire. Refer to BR-28, "
Removal and Instal-
lation of Brake Caliper and Disc Rotor" .
CAUTION:

Do not crimp or stretch the brake hose when repositioning the brake caliper out of the way.

Do not press brake pedal while the brake caliper is removed.
7. Remove the spare tire.
8. Disconnect the two rear ABS sensor electrical connectors.
9. Remove the two rear drive shafts. Refer to RAX-7, "
Removal and Installation" .
10. Remove the rear final drive. Refer to RFD-13, "
REAR FINAL DRIVE ASSEMBLY" .
11. Remove the EVAP canister bolt from the top of the rear suspension member.
12. Disconnect the parking brake cables from the brackets on the rear suspension member.
13. Set a suitable jack to support each of the rear lower links and the coil spring tension.
14. Remove both of the rear lower link outer bolts and lower the jack to remove the rear coil springs.
15. Remove the two bolts to disconnect the seat belt latch anchor from the rear suspension member.
16. Disconnect both of the connecting rods from the rear stabilizer bar.
17. Set a suitable jack under the rear suspension member.
18. Remove the six rear suspension member bolts.
19. Slowly lower the jack to remove the rear suspension member, suspension arm, front and rear lower links and stabilizer bar as
an assembly.
20. If necessary, remove the suspension arm, spare tire bracket, height sensor, rear load leveling air suspension hoses, stabilizer
bar, knuckle, and front and rear lower links from the rear suspension member.
INSPECTION AFTER REMOVAL
Check the rear suspension member for deformation, cracks, and other damage and replace if necessary.
LEIA0074E
LEIA0077E
LEIA0075E

RSU-34
REAR SUSPENSION MEMBER
Revision: November 20092006 QX56
INSTALLATION
Installation is in the reverse order of removal.

When raising the rear suspension member assembly, use the
locating pins to align the rear suspension member to the vehicle
body.

When installing the upper and lower rubber seats for the rear
coil springs, the arrow embossed on the rubber seats must point
out toward the wheel and tire assembly.

To connect the rear load leveling air suspension hoses, the lock
ring must be fully seated in the fitting. Insert the hose “B” into the
lock ring “A” until the lock ring “A” is touching the hose “B” as
shown. Pull on the hose to check that it is securely inserted.

Perform the final tightening of the nuts and bolts for the links (rubber bushing) under unladen condition
(unladen condition means that the fuel tank, engine coolant and lubricants are at the full specification, and
the spare tire, jack, hand tools, and mats are in their designated positions) with the tires on level ground.

Check the wheel alignment. Refer to RSU-48, "Wheel Alignment" .
LEIA0083E
LEIA0076E
LEIA0078E

SHOCK ABSORBERRSU-35
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Revision: November 2009 2006 QX56
SHOCK ABSORBERPFP:56210
Removal and Installation EES001HJ
REMOVAL
1. Remove the wheel and tire assembly using power tool. Refer to WT-7, "Rotation" .
2. Use CONSULT-II “EXHAUST SOLENOID ” active test to release the air pressure from the rear load level-
ing air suspension system.
3. Remove the four clips and remove the rear fender protector, front.
4. Disconnect the rear load leveling air suspension hose from the shock absorber.

To disconnect the hose, push in on the lock ring using a suit-
able tool and pull the air hose out.
5. Remove the shock absorber upper and lower end bolts using power tool.
6. Remove the shock absorber.
CAUTION:
Do not damage the rubber boot on the shock absorber.
INSTALLATION
Installation is in the reverse order of removal.

Tighten the shock absorber bolts to specification. Refer to RSU-26, "Components" .
INSPECTION AFTER INSTALLATION

Check the shock absorber for any air leaks or damage to the rubber boot.

Check the shock absorber for smooth operation through a full stroke, both compression and extension.

Check piston rod for cracks, deformation or other damage and replace if necessary.
LEIA0081E
LEIA0082E

REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLYRSU-43
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REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLYPFP:53400
Removal and InstallationEES001HP
Rear Load Leveling Air Suspension System
REMOVAL
1. Use CONSULT-II "EXHAUST SOLENOID" active test to release the air pressure from the rear load level-
ing air suspension system.
2. Disconnect the electrical connectors for the rear load leveling air suspension compressor assembly.
3. Unclip the rubber cover to access the rear load leveling air suspension compressor assembly.
4. Disconnect the rear load leveling air suspension hoses at the rear load leveling air suspension compressor assembly.

To disconnect the hoses, push in on the lock ring using a suit-
able tool and pull the hose out.
LEIA0072E
1. Rear load leveling air suspension
hose, RH 2. Shock absorber, RH 3. Height sensor
4. Rear load leveling air suspension hose, LH 5. Shock absorber, LH 6. Rear load leveling air suspension
compressor assembly
LEIA0074E

RSU-44
REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY
Revision: November 20092006 QX56
5. Remove the four bolts that mount the rear load leveling air sus-
pension compressor assembly to the underbody.
INSTALLATION
Installation is in the reverse order of removal.

To connect the rear load leveling air suspension hoses, the lock
ring must be fully seated in the fitting. Insert the hose “B” into the
lock ring “A” until the lock ring “A” is touching the hose “B” as
shown. Pull on the hose to check that it is securely inserted.
LEIA0090E
LEIA0078E

SB-4
SEAT BELTS
Revision: November 20092006 QX56
FRONT SEAT BELT RETRACTOR
Removal
CAUTION:

Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
1. Remove the center pillar upper/lower finishers. Refer to EI-35, "
BODY SIDE TRIM" .
2. Remove the seat belt retractor anchor bolts and seat belt retractor and belt assembly.

On RH side, disconnect the seat belt tension sensor.
3. Disconnect the seat belt pre-tensioner electrical connector. CAUTION:

For removing pre-tensioner connector, insert a thin
screwdriver (1) wrapped in tape (3) into the notch. Lift the
locking tab to unlock (2), then remove the connector.

Install the pre-tensioner connector with the locking tab
raised, then push the locking tab into the connector to
lock (4).
Installation
Installation is in the reverse order of removal.

Install the seat belt retractor and belt assembly upper bolt first.

Ensure that seat belt height adjuster is locked in the lowest position during installation.
WHIA0278E
WHIA0279E

SEAT BELTSSB-5
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FRONT SEAT BELT BUCKLE
Removal
1. Remove the front seat. Refer to SE-91, "FRONT SEAT" .
2. Remove the seat cushion. Refer to SE-96, "
SEAT CUSHION TRIM AND PAD (DRIVER) OR SEAT
CUSHION ASSEMBLY (PASSENGER)" .
3. Disconnect the seat belt buckle pre-tensioner electrical connector. CAUTION:

For removing pre-tensioner connector, insert a thin
screwdriver (1) wrapped in tape (3) into the notch. Lift the
locking tab to unlock (2), then remove the connector.

Install the pre-tensioner connector with the locking tab
raised, then push the locking tab into the connector to
lock (4).
4. Remove screw and seat cushion inner finisher.
5. Remove the anchor bolt, then remove front seat belt buckle from the seat frame.
Installation
Installation is in the reverse order of removal.
WHIA0279E
WHIA0280E

SEAT BELTSSB-7
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REMOVAL
1. Remove seat belt lower anchor cover and bolt.
2. Remove the D-ring anchor bolt cover and D-ring anchor bolt.
3. Remove the upper and lower luggage area trim. Refer to EI-35, "
BODY SIDE TRIM" .
4. Remove the seat belt guide bolt.
5. Remove seat belt retractor anchor bolt and the seat belt assembly.
6. Remove the seat belt height adjuster assembly.
INSTALLATION
Installation is in the reverse order of removal.

Ensure that seat belt height adjuster is locked in the lowest position during installation.
SECOND ROW SEAT BELT BUCKLE
Removal
1. Remove the rear bucket seat.
2. Remove the screw and seat cushion inner finisher. Refer to SE-
98, "Second Row Center"
3. Remove the anchor bolt and buckle.
4. Remove the rear bench seat. Refer to SE-98, "
Second Row Outboard" .
5. Remove the seat cushion finisher.
6. Remove the anchor bolt and buckle.
Installation
Installation is in the reverse order of removal.
SECOND ROW SEAT BELT RETRACTOR - BENCH SEAT
Removal
1. Remove seat belt anchor.
2. Remove seat belt bezel.
3. Remove seat back upholstery and foam. Refer to SE-99, "
Disassembly and Assembly" .
4. Remove seat belt retractor cover.
5. Remove bolt and remove seat belt retractor and seat belt assembly.
Installation
Installation is in the reverse order of removal.
WHIA0347E

SEAT BELTSSB-9
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INSTALLATION
Installation is in the reverse order of removal.

Make sure seat belt height adjuster is locked in the lowest position during installation.

Seat belt anchor base should be flat to the floor during installation and not on the anti-rotation bead.
Third Row Center
REMOVAL
1. Remove the rear roof finisher. Refer to EI-40, "LUGGAGE FLOOR TRIM" .
2. Lower the rear portion of the headliner.
3. Remove the seat belt retractor anchor bolts and retractor and belt assembly.
INSTALLATION
Installation is in the reverse order of removal.
THIRD ROW SEAT BELT BUCKLE
Removal
1. Place seatback RH/LH in the folded position.
2. Remove luggage floor board assembly and storage box. Refer to EI-40, "
LUGGAGE FLOOR TRIM" .
3. Remove seat belt buckle bolt (2) from rear seat hinge (1).

⇐ : Vehicle front
WHIA0284E
Seat belt buckle bolt : 49 N·m (5.0 kg-m, 36 ft-lb)
LHIA0107E