2010 INFINITI QX56 steering

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)BRC-117
< REMOVAL AND INSTALLATION > [VDC/TCS/ABS]
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• Always tighten brake tubes to sp ecification when installing.
• Never reuse drained brake fluid.
• After installation of the ABS actuator and elect ric unit (control unit), perform the following.
- Refill brake system with new br ake fluid. Then bleed the air from the system. Refer to BR-17, "
Bleed-
ing Brake System".
- Adjust the steering angle sensor. Refer to BRC-8, "
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION : Speci al Repair Requirement".
- Calibrate the decel G sensor. Refer to BRC-9, "
CALIBRATION OF DECEL G SENSOR : Special Repair
Requirement".
Revision: April 20092010 QX56

BRC-118
< REMOVAL AND INSTALLATION >[VDC/TCS/ABS]
STEERING ANGLE SENSOR
STEERING ANGLE SENSOR
Removal and InstallationINFOID:0000000005148102
REMOVAL
1. Remove spiral cable. Refer to
SR-7, "Removal and Installation".
2. Remove the screws and remove the steering angle sensor.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
After installation of spiral cable, ad just steering angle sensor. Refer to BRC-8, "
ADJUSTMENT OF
STEERING ANGLE SENSOR NEUTRAL POSIT ION : Special Repair Requirement".
Revision: April 20092010 QX56

BRM-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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SECTION BRM
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CONTENTS
BODY REPAIR
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Handling Precaution For Plastics ..............................3
SERVICE INFORMATION ............................6
BODY REPAIR ...................................................6
Body Mounting ..................................................... .....6
Body Exterior Paint Color .........................................7
Body Component Parts ............................................8
Corrosion Protection ................................................13
Body Sealing ...........................................................16
Body Construction ...................................................20
Body Alignment .......................................................20
Handling Precaution for Plastics ..............................35
Precaution in Repairing High Strength Steel ...........38
Foam Repair ............................................................40
Replacement Operation ...........................................41
Revision: April 20092010 QX56

BRM-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005370276
The Supplemental Restraint System such as “A IR 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses 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 Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005370277
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

PRECAUTIONSBRM-3
< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Handling Precaution For PlasticsINFOID:0000000005370283
PRECAUTIONS FOR PLASTICS
1. When repairing and painting a portion of the body adjacent to plastic parts, consider their characteristics (influence of hea t and sol-
vent) and remove them if necessary or take suitable measures to protect them.
2. Plastic parts should be repaired and painted using methods suiting the materials
, characteristics.
Abbre-
viation Material name Heat resisting
temperature
°C ( °F) Resistance to gasoline and
solvents Other cautions
PE Polyethylene 60 (140)Gasoline and most solvents are
harmless if applied for a very
short time (wipe up quickly).
Flammable
ABS Acrylonitrile Butadiene Styrene 80 (176) Avoid gasoline and solvents. —
EPM/
EPDM Ethylene Propylene (Diene) co-
polymer
80 (176)Gasoline and most solvents are
harmless if applied for a very
short time (wipe up quickly). Flammable
PS Polystyrene 80 (176) Avoid solvents. Flammable
PVC Poly Vinyl Chloride 80 (176)Gasoline and most solvents are
harmless if applied for a very
short time (wipe up quickly). Poison gas is emitted
when burned.
TPO Thermoplastic Olefine 80 (176) Same as above. Flammable
AAS Acrylonitrile Acrylic Styrene 85 (185) Avoid gasoline and solvents. —
PMMA Poly Methyl Methacrylate 85 (185) Same as above. —
EVAC Ethylene Vinyl Acetate 90 (194) Avoid gasoline and solvents. —
PP Polypropylene 90 (194)Gasoline and most solvents are
harmless if applied for a very
short time (wipe up quickly). Flammable, avoid bat-
tery acid.
PUR Polyurethane 90 (194) Avoid gasoline and solvents. —
UP Unsaturated Polyester 90 (194) Same as above. Flammable
ASA Acrylonitrile Styrene Acrylate 100 (212) Same as above. Flammable
PPE Poly Phenylene Ether 110 (230) Same as above. —
TPU Thermoplastic Urethane 110 (230) Same as above. —
PBT+
PC Poly Butylene Terephthalate +
Polycarbonate
120 (248) Same as above.
Flammable
PC Polycarbonate 120 (248) Same as above. —
POM Poly Oxymethylene 120 (248) Same as above. Avoid battery acid.
PA Polyamide 140 (284) Same as above. Avoid immersing in wa-
ter.
PBT Poly Butylene Terephthalate 140 (284) Same as above. —
PAR Polyarylate 180 (356) Same as above. —
PET Polyester 180 (356) Same as above. —
PEI Polyetherimide 200 (392) Same as above. —
Revision: April 20092010 QX56

CCS-2
DTC 98 GEAR POSITION .................................41
DTC 98 GEAR POSITION ................................... ...41
DTC 102 LASER STAIN ....................................42
DTC 102 LASER STAIN ...................................... ...42
DTC 103 LASER SENSOR FAIL .......................43
DTC 103 LASER SENSOR FAIL ......................... ...43
DTC 104 LASER AIMING INCMP .....................44
DTC 104 LASER AIMING INCMP ....................... ...44
DTC 107 LASER COMM FAIL ..........................45
DTC 107 LASER COMM FAIL ............................ ...45
DTC109 LASER HIGH TEMP ............................46
DTC 109 LASER HIGH TEMP ............................ ...46
ECU DIAGNOSIS ..................................... ...47
ICC UNIT ............................................................47
Terminal and Reference Va lue for ICC Unit ...........47
Wiring Diagram .................................................... ...48
Fail Safe .................................................................55
Diagnostic Trouble Code (DTC) Chart ....................56
SYMPTOM DIAGNOSIS .............................58
INTELLIGENT CRUISE CONTROL SYSTEM
SYMPTOMS .................................................... ...
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Symptom Chart .................................................... ...58
MAIN SWITCH DOES NOT TURN ON, MAIN
SWITCH DOES NOT TURN OFF ......................
59
Diagnosis Procedure ........................................... ...59
ICC SYSTEM CANNOT BE SET (MAIN
SWITCH TURNS ON/OFF) ................................
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Diagnosis Procedure ........................................... ...60
ICC STEERING SWITCH (OTHER THAN
MAIN SWITCH) DOES NOT FUNCTION ..........
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Diagnosis Procedure ........................................... ...61
ICC SYSTEM DOES NOT CANCEL WHEN A/
T SELECTOR LEVER SETS ON "N" ................
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Diagnosis Procedure ............................................ ...62
CHIME DOES NOT SOUND ..............................63
Diagnosis Procedure ............................................ ...63
DRIVING FORCE IS HUNTING .........................64
Diagnosis Procedure ............................................ ...64
ICC SYSTEM FREQUENTLY CANNOT DE-
TECT THE VEHICLE AHEAD/ DETECTION
ZONE IS SHORT ...............................................
65
Diagnosis Procedure ...............................................65
THE SYSTEM DOES NOT DETECT THE VE-
HICLE AHEAD AT ALL .....................................
66
Diagnosis Procedure ............................................ ...66
NORMAL OPERATING CONDITION ................67
Description ........................................................... ...67
PRECAUTION ............................................69
PRECAUTIONS .............................................. ...69
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
69
ICC System Service ................................................69
PREPARATION ..........................................70
PREPARATION .............................................. ...70
Special Service Tool ............................................ ...70
ON-VEHICLE REPAIR ...............................71
ICC C/U ..............................................................71
ICC Unit ............................................................... ...71
ICC SENSOR INTEGRATED UNIT ...................72
ICC Sensor .......................................................... ...72
ICC STEERING SWITCH ..................................73
Removal and Installation .........................................73
Revision: April 20092010 QX56

CCS
INTELLIGENT CRUISE CONTROL SYSTEMCCS-13
< FUNCTION DIAGNOSIS >
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INTELLIGENT CRUISE CONTROL SYSTEM
System DiagramINFOID:0000000005145979
System DescriptionINFOID:0000000005145980
• The Intelligent Cruise Control (ICC) system automatic ally maintains a selected distance from the vehicle
ahead according to that vehicle's speed, or at the set speed, if the road ahead is clear.
• The ICC function has two cruise control modes and brake assist (with preview function).
• To activate or deactivate the ICC system and set the vehicle speed and vehicle-to-vehicle distance, use the
ICC steering switch.
• The operation status of the ICC system is indicated on the ICC system display of the combination meter.
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
• Vehicle-to-vehicle distance control mode, the vehicle can maintain the same speed as other vehicles without
the constant need to adjust the set speed as the dr iver would with a normal cruise control system.
• The system is intended to enhance the operation of the v ehicle when following the vehicle traveling in the
same lane and direction.
• If the ICC sensor integrated unit detects a slow er moving vehicle ahead, the system will reduce speed so
that the vehicle ahead can be followed at the selected distance.
• The system automatically controls the throttle and applies the brakes (up to 25% of vehicle braking power) if necessary.
• The detection range of the sensor is approximately 390 ft (120 m) ahead.
• Refer to Owner's Manual for Intelligent Cr uise Control System operating instructions.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
• Conventional (fixed speed) cruise control mode is cruising at preset speeds.
• Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
BRAKE ASSIST (WITH PREVIEW FUNCTION)
• When the force applied to brake pedal exceeds a certain level, the Brake Assist is activated and generates a
greater braking force than that of a convent ional brake booster even with light pedal force.
• When the Preview Function identifies the need to apply the sudden brake by sensing the vehicle ahead in the same lane and the distance and relative speed from it, it applies the brake pre-pressure before driver
depresses the brake pedal and improves brake response by reducing its free play.
• Refer to Owner's Manual for BRAKE ASSIST (WITH PREVIEW FUNCTION) operating instructions.
WKIA1976E
Revision: April 20092010 QX56

CCS-14
< FUNCTION DIAGNOSIS >
INTELLIGENT CRUISE CONTROL SYSTEM
ICC STEERING SWITCH
ICC system is operated by MAIN switch and four control switches, all mounted on the steering wheel.
NOTE:
The on board self-diagnosis function of the ICC system can be started with the RESUME/ACCELERATE
switch and SET/COAST switch. Refer to CCS-17, "
Diagnosis Description".
In Vehicle-To-Vehicle Distance Control Mode
In Conventional (Fixed Speed) Cruise Control Mode
ICC SYSTEM DISPLAY
For information about the ICC system display, refer to the Owner Manual.
1. ACCELERATE/RESUME switch 2. COAST/SET switch 3. CANCEL switch
4. ON/OFF switch 5. DISTANCE switch
ALOIA0013ZZ
No.Switch name Description
1 ACCEL/RES switch Resumes set speed or increases speed incrementally.
2 SET/COAST switch Sets desired cruise speed or reduces speed incrementally.
3 CANCEL switch Deactivates system without erasing set speed.
4 ON/OFF switch Master switch to activate the system.
5 DISTANCE switch Changes the following distance from: Long, Middle, Short.
No.Switch name Description
1 ACCEL/RES switch Resumes set speed or increases speed incrementally.
2 SET/COAST switch Sets desired cruise speed or reduces speed incrementally.
3 CANCEL switch Deactivates system without erasing set speed.
4 ON/OFF switch Master switch to activate the system.
5 DISTANCE switch Ineffective in this mode.
Revision: April 20092010 QX56