Infiniti QX56 (Z62). Manual - part 1102

 

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Infiniti QX56 (Z62). Manual - part 1102

 

 

HYDRAULIC BODY-MOTION CONTROL SYSTEM

SCS-45

< REMOVAL AND INSTALLATION >

[HBMC]

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A

B

SCS

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3.

Remove lower side pipe (A) of rear shock absorber LH.

4.

Remove pipe (A) from left side rear joint (B).

5.

Remove lower side pipe (A) of rear shock absorber RH.

6.

Remove pipe (A) from right side rear joint (B).

7.

Remove mounting bolts of bracket of rear tube assembly A and
B.

8.

Remove rear tube assembly A from the vehicle.

9.

Perform inspection after removal. Refer to 

SCS-46, "REAR

TUBE ASSEMBLY : Inspection"

.

Rear Tube Assembly B (from Rear Shock Absorber RH Lower to Left Side Rear Joint)

1.

Reduce system pressure. Refer to 

SCS-17, "Work Procedure"

.

2.

Remove rear muffler. Refer to 

EX-5, "Removal and Installation"

.

JSEIA0209ZZ

JSEIA0204ZZ

JSEIA0212ZZ

JSEIA0207ZZ

SCS-46

< REMOVAL AND INSTALLATION >

[HBMC]

HYDRAULIC BODY-MOTION CONTROL SYSTEM

3.

Remove lower side pipe (A) of rear shock absorber RH.

4.

Remove pipe (A) from left side rear joint (B).

5.

Remove mounting bolts of bracket of rear tube assembly B.

6.

Remove mounting bolts of bracket of rear left brake hose, and
then free hose.

7.

Remove rear tube assembly B from the vehicle.

8.

Perform inspection after removal. Refer to 

SCS-46, "REAR

TUBE ASSEMBLY : Inspection"

.

INSTALLATION

Note the following, and install in the reverse order of removal.
• Apply genuine NISSAN hydraulic suspension fluid to O-ring.
• Check connection portion of each piping for dirt or dust.

REAR TUBE ASSEMBLY : Inspection

INFOID:0000000006256034

INSPECTION AFTER REMOVAL

• O-ring must be free of scratches and damage.
• Pipe and tube must be free of scratches and damage.

INSPECTION AFTER INSTALLATION

Check oil leakage, twists, deformation, contact with other parts, and loose connections.

ADJUSTMENT AFTER INSTALLATION

Perform air bleeding. Refer to 

SCS-18, "Work Procedure"

.

JSEIA0212ZZ

JSEIA0204ZZ

PRECAUTIONS

SCS-47

< PRECAUTION >

[AIR LEVELIZER CONTROL SYSTEM]

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PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000006256135

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

INFOID:0000000006256137

NOTE:
• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

1.

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

2.

Turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)

3.

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

4.

Perform the necessary repair operation.

SCS-48

< PRECAUTION >

[AIR LEVELIZER CONTROL SYSTEM]

PRECAUTIONS

5.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)

6.

Perform self-diagnosis check of all control units using CONSULT-III.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000006256139

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Precaution for Air Levelizer Control System

INFOID:0000000006256038

• Never allow water and dust to enter the inside of air compressor.
• Never disassemble the vehicle height sensor.

PIIB3706J

 

 

 

 

 

 

 

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