2011 INFINITI QX56 steering wheel adjustment

AV-200
< SYMPTOM DIAGNOSIS >
MULTI AV SYSTEM SYMPTOMS
RELATED TO AROUND VIEW MONITOR
Symptoms Check items Probable malfunction location
Does not recognize cellular
phone connection. (no connec-
tion is displayed on the display
at the guide.) Repeat the registration of cellular phone.
AV control unit malfunction.
Replace AV control unit. Refer to AV- 2 1 2 , "
Removal and
Installation".
Hands-free phone cannot be
established.  Hands-free phone operation can be
made, but the communication cannot
be established.
 Hands-free phone operation can be performed, however, voice between
each other cannot be heard during the
conversation.
The other party's voice cannot
be heard by hands-free phone. Check the “microphone speaker” in In-
spection & Adjustment Mode if sound is
heard.
Originating sound is not heard
by the other party with hands-
free phone communication. Sound operation function is normal.
Sound operation function does not work.
Microphone signal circuit malfunction.
Refer to
AV- 1 7 8 , "
Diagnosis Procedure".
The system cannot be operat-
ed.  The voice recognition can be controlled.
 Steering switch's ”VOL UP”, “VOL
DOWN” and “ ” switch works, but
“ ” it does not work. Steering switch malfunction. Replace steering wheel.
Refer to
ST-33, "
Exploded View".
Steering switch's “ ”, ”VOL UP”, “VOL
DOWN” and “ ” switches do not work. Steering switch signal B circuit malfunction.
Refer to
AV- 1 9 5 , "
Diagnosis Procedure".
All steering switches do not work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location / Action
to take
It does not switch to camera image
even when the “CAMERA” switch is
pressed or the selector lever is in the
reverse position. “Camera Cont.” of “Confirmation/Adjustment” can be
selected.
Ignition signal circuit malfunction
(around view monitor control unit).
“Camera Cont.” of “Confirmation/Adjustment” cannot
be selected.  Around view monitor control unit
power supply and ground circuits
malfunction.
Refer to AV- 1 6 4 , "
AROUND VIEW
MONITOR CONTROL UNIT : Diag-
nosis Procedure".
 AV communication circuits malfunc- tion.
Refer to AV- 3 9 , "
CONSULT-III Func-
tion".
The screen switches when pressing
the “CAMERA” switch or shifting the
selector lever to the reverse posi-
tion, however, all views are not dis-
played. Only superimposing is displayed.
(Only the image displayed by AV control unit is dis-
played)
Camera image signal circuit between
around view monitor control unit and
front display unit malfunction.
Refer to
AV- 1 8 0 , "
Diagnosis Proce-
dure".
Superimposing is not displayed. Communication circuit between AV control unit and front display unit mal-
function.
Refer to AV- 3 9 , "
CONSULT-III Func-
tion".
Camera image is rolling. —
It cannot be switched to rear view
monitor even when the selector le-
ver is in the reverse position.
The front view is displayed normally.
Reverse signal circuit malfunction. (AV
control unit)
Revision: 2010 May2011 QX56

AV-202
< SYMPTOM DIAGNOSIS >
MULTI AV SYSTEM SYMPTOMS
RELATED TO RGB IMAGE
RELATED TO VOICE CONTROL
RELATED TO AUDIO
Symptoms Check itemsProbable malfunction location / Action to
take
The malfunction is detected in the sonar in-
dicator
(Always displayed in red) The malfunction is detected in only 1 indica-
tor (Always displayed in red).
 Corner sensor malfunction in corre-
sponding area.
 Corner sensor harnes s circuit in corre-
sponding area.
Perform CONSULT-III “self-diagnosis” of
“SONAR”. Refer to AV- 4 7 , "
CONSULT-III
Function".
The malfunction is detected in all 4 indicators
(Always displayed in red).  Corner sensor ground circuit malfunc-
tion.
Perform CONSULT-III “self-diagnosis” of
“SONAR”. Refer to AV- 4 7 , "
CONSULT-III
Function".
 Sonar control unit power supply and ground circuits malfunction.
 AV communication circuits malfunc-
tion.
Perform CONSULT-III “self-diagnosis” of
“MULTI AV”. Refer to AV- 3 9 , "
CONSULT-
III Function".
Symptoms Check items Probable malfunction location
RGB image is not shown. — RGB digital image signal circuit malfunction.
Refer to
AV- 1 6 6 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location
The voice cannot be controlled
even if the voice control screen
is displayed. Voice sounds at “Voice Microphone Test”
of Confirmation/Adjustment mode.
AV control unit malfunction.
Replace AV control unit. Refer to
AV- 2 1 2 , "
Removal and
Installation".
Voice does not sound at “Voice Micro-
phone Test” of Confirmation/Adjustment
mode. Microphone circuit malfunction.
Refer to
AV- 1 7 8 , "
Diagnosis Procedure".
The voice cannot be controlled
(Voice control screen is not dis-
played).  Hands-free phone system can be oper-
ated.
 Steering switch's “SOURCE”, “MENU UP”, “MENU DOWN” and “ENTER”
switch works, but “ ” it does not work. Steering switch malfunction.
Replace steering wheel. Refer to
ST-33, "
Exploded
View".
Steering switch's “SOURCE”, “MENU
UP”, “MENU DOWN”, “ ” and “ENTER”
switches do not work. Steering switch signal A circuit malfunction.
Refer to
AV- 1 9 3 , "
Diagnosis Procedure".
None of the steering switch operations
work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location
The disk cannot be removed. — Disk eject signal circuit malfunction.
Refer to
AV- 1 7 6 , "
Diagnosis Procedure".
Audio sound is not heard. No sound from all speakers.
 Amp. ON signal circuit malfunction.
 BOSE amp. power supply and ground circuits malfunc-
tion.
Sound is not heard from woofer.  Woofer power supply and ground circuit malfunction.
 Sound signal (woofer) circuit malfunction.
Sound is heard only from specific places. Sound signals circuit of suspect system.
Revision: 2010 May2011 QX56

BR-1
BRAKES
C
DE
G H
I
J
K L
M
SECTION BR
A
B
BR
N
O P
CONTENTS
BRAKE SYSTEM
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
Precaution for Procedure without Cowl Top Cover ......4
Precaution for Brake system .....................................4
PREPARATION ............................................5
PREPARATION .............................................. .....5
Commercial Service Tools .................................. ......5
SYMPTOM DIAGNOSIS ...............................6
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
6
NVH Troubleshooting Chart ................................ ......6
PERIODIC MAINTENANCE ..........................7
BRAKE PEDAL .............................................. .....7
Inspection and Adjustment .................................. ......7
BRAKE FLUID ....................................................10
Inspection ............................................................ ....10
Draining ...................................................................10
Refilling ...................................................................11
Bleeding Brake System ...........................................11
HYDRAULIC BOOSTER ASSEMBLY ...............15
Inspection ............................................................ ....15
FRONT DISC BRAKE .................................... ....16
BRAKE PAD .......................................................... ....16
BRAKE PAD : Inspection and Adjustment ..............16
DISC ROTOR ......................................................... ....16
DISC ROTOR : Inspection and Adjustment ............16
REAR DISC BRAKE .........................................18
BRAKE PAD .......................................................... ....18
BRAKE PAD : Inspection and Adjustment ...............18
DISC ROTOR ......................................................... ....18
DISC ROTOR : Inspection and Adjustment .............18
REMOVAL AND INSTALLATION ...............20
BRAKE PEDAL ................................ .................20
Exploded View ..................................................... ....20
Removal and Installation .........................................20
Inspection and Adjustment ......................................21
BRAKE PIPING ................................ .................22
FRONT ................................................................... ....22
FRONT : Exploded View .........................................22
FRONT : Hydraulic Piping .......................................23
FRONT : Removal and Installation ..........................23
FRONT : Inspection .................................................24
REAR ..................................................................... ....24
REAR : Exploded View ............................................25
REAR : Hydraulic Piping ..........................................25
REAR : Removal and Installation ............................26
REAR : Inspection ...................................................26
HYDRAULIC BOOSTER ASSEMBLY ..............28
Exploded View .........................................................28
Removal and Installation .........................................29
Disassembly and Assembly .....................................30
Inspection and Adjustment ......................................32
Disposal ...................................................................33
FRONT DISC BRAKE .......................................34
BRAKE PAD .......................................................... ....34
BRAKE PAD : Exploded View .................................34
BRAKE PAD : Removal and Installation ..................34
BRAKE PAD : Inspection . ........................................36
Revision: 2010 May2011 QX56

BR-4
< PRECAUTION >
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 igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Procedure without Cowl Top CoverINFOID:0000000006228173
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for Brake systemINFOID:0000000006222459
WARNING:
Clean any dust from the front brake and rear brake wi th a vacuum dust collector. Never blow with com-
pressed air.
 Brake fluid use refer to MA-10, "
Fluids and Lubricants".
 Never reuse drained brake fluid.
 Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off
immediately and wash with water if it gets on a painted surface.
 Always confirm the specified tightening torque when installing the brake pipes.
 After pressing the brake pedal more deeply or harder t han normal driving, such as air bleeding, check each
item of brake pedal. Adjust brake pedal if it is outside the standard value.
 Always clean with new brake fluid when cleaning the brake caliper and other components.
 Never use mineral oils such as gasoline or light oil to clean. They may damage rubber parts and cause
improper operation.
 Always loosen the brake tube flar e nut with a flare nut wrench.
 Tighten the brake tube flare nut to the specified torque with a crow-
foot (A) and torque wrench (B).
 Brake system is an important safety part. If a brake fluid leak is detected, always disassemble the affected part. If a malfunction is
detected, replace part with a new one.
 Always connect the battery terminals when moving the vehicle.
 Turn the ignition switch OFF and disconnect the hydraulic booster assembly harness connector or the battery negative terminal
before performing the work.
 Check that no brake fluid leakage is present after replacing the
parts.
 Burnish the brake contact surfaces after refinishing or replacing rotors, after replacing pads, or if a soft pedal occurs at very low mileage.
- Front brake pad: Refer to BR-16, "
BRAKE PAD : Inspection and Adjustment".
- Front disc rotor: Refer to BR-16, "
DISC ROTOR : Inspection and Adjustment".
- Rear brake pad: refer to BR-18, "
BRAKE PAD : Inspection and Adjustment".
- Rear disc rotor: BR-18, "
DISC ROTOR : Inspection and Adjustment".
PIIB3706J
JPFIA0001ZZ
Revision: 2010 May2011 QX56

BRC-2
ADDITIONAL SERVICE WHEN REPLACING
ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT) ..............................................
63
Description ........................................................... ...63
ADJUSTMENT OF STEERING ANGLE SEN-
SOR NEUTRAL POSITION ...............................
64
Description ........................................................... ...64
Work Procedure ......................................................64
CALIBRATION OF DECEL G SENSOR ...........66
Description ........................................................... ...66
Work Procedure ......................................................66
DTC/CIRCUIT DIAGNOSIS ...................... ...68
C1101, C1102, C1103, C1104 WHEEL SEN-
SOR ................................................................. ...
68
DTC Logic ............................................................ ...68
Diagnosis Procedure ..............................................68
C1105, C1106, C1107, C1108 WHEEL SEN-
SOR ....................................................................
70
DTC Logic ............................................................ ...70
Diagnosis Procedure ..............................................70
C1109 POWER AND GROUND SYSTEM .........72
Description ........................................................... ...72
DTC Logic ...............................................................72
Diagnosis Procedure ..............................................72
C1111 PUMP MOTOR .......................................75
DTC Logic ............................................................ ...75
Diagnosis Procedure ..............................................75
C1115 WHEEL SENSOR ...................................77
DTC Logic ............................................................ ...77
Diagnosis Procedure ..............................................77
C1116 STOP LAMP SWITCH ............................79
DTC Logic ............................................................ ...79
Diagnosis Procedure ..............................................79
Component Inspection (Stop lamp Switch) ............85
Component Inspection (Stop Lamp Relay) .............86
C1118 TRANSFER CONTROL UNIT ................87
DTC Logic ............................................................ ...87
Diagnosis Procedure ..............................................87
C1120, C1122, C1124, C1126 ABS IN VALVE
SYSTEM .......................................................... ...
88
DTC Logic ............................................................ ...88
Diagnosis Procedure ..............................................88
C1121, C1123, C1125, C1127 ABS OUT
VALVE SYSTEM ................................................
90
DTC Logic ............................................................ ...90
Diagnosis Procedure ..............................................90
C1130 ENGINE SIGNAL ...................................92
DTC Logic ............................................................ ...92
Diagnosis Procedure ............................................ ...92
C1140 ACTUATOR RELAY SYSTEM ..............93
DTC Logic ............................................................ ...93
Diagnosis Procedure ...............................................93
C1142 PRESS SENSOR ...................................95
DTC Logic ............................................................ ...95
Diagnosis Procedure ...............................................95
C1143 STEERING ANGLE SENSOR ...............97
DTC Logic ............................................................ ...97
Diagnosis Procedure ...............................................97
C1144 INCOMPLETE STEERING ANGLE
SENSOR ADJUSTMENT ..................................
99
DTC Logic ............................................................ ...99
Diagnosis Procedure ...............................................99
C1145, C1146 YAW RATE/SIDE/DECEL G
SENSOR ...........................................................
100
DTC Logic ............................................................ .100
Diagnosis Procedure .............................................100
C1155 BRAKE FLUID LEVEL SWITCH ..........103
DTC Logic ............................................................ .103
Diagnosis Procedure .............................................103
Component Inspection ..........................................104
C1160 DECEL G SEN SET ..............................105
DTC Logic ............................................................ .105
Diagnosis Procedure .............................................105
C1164, C1165 CV SYSTEM .............................106
DTC Logic ............................................................ .106
Diagnosis Procedure .............................................106
C1166, C1167 SV SYSTEM .............................108
DTC Logic ............................................................ .108
Diagnosis Procedure .............................................108
C1170 VARIANT CODING ...............................110
DTC Logic ............................................................ .110
Diagnosis Procedure .............................................110
C118E ACCUMULATOR ..................................111
DTC Logic ............................................................ .111
Diagnosis Procedure .............................................111
U1000 CAN COMM CIRCUIT ...........................112
Description ........................................................... .112
DTC Logic .............................................................112
Diagnosis Procedure .............................................112
POWER SUPPLY AND GROUND CIRCUIT ....113
Description ........................................................... .113
Diagnosis Procedure .............................................113
PARKING BRAKE SWITCH .............................117
Component Function Check ................................ .117
Diagnosis Procedure .............................................117
Component Inspection ..........................................118
Revision: 2010 May2011 QX56

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-49
< ECU DIAGNOSIS INFORMATION > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
C 111 5 When difference in wheel speed between any wheel and others is detected during
the vehicle is driven, because of installation of other tires than specified. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C 111 6
 When stop lamp switch signal is not input when brake pedal depress.
 When stop lamp switch signal is not input when stop lamp relay operates.
C 111 8
*1When a malfunction is detected in transfer control unit system.
C1120 When a malfunction is detec ted in front LH ABS IN valve.
The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential (BLSD) function
C1121 When a malfunction is detec
ted in front LH ABS OUT valve.
C1122 When a malfunction is detected in front RH ABS IN valve.
C1123 When a malfunction is det ected in front RH ABS OUT valve.
C1124 When a malfunction is detected in rear LH ABS IN valve.
C1125 When a malfunction is detected in rear LH ABS OUT valve.
C1126 When a malfunction is det ected in rear RH ABS IN valve.
C1127 When a malfunction is detected in rear RH ABS OUT valve.
C1130 When a malfunction is detected in ECM system. The following functions are sus-
pended.
 VDC function
 TCS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1140 When a malfunction is detected in actuator relay. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1142
*2When a malfunction is detected in master cylinder pressure sensor or control pres-
sure sensor. The following functions are sus-
pended.
 VDC function
 TCS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1143 When a malfunction is detected in steering angle sensor.
C1144 When neutral position adjustment of steering angle sensor is not complete.
C1145
 When a malfunction is detected in yaw rate signal.
 When yaw rate signal is not continuously received for 2 seconds or more.
 When side G signal is not continuously received for 2 seconds or more.
 When decel G signal is not continuously received for 2 seconds or more.
The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1146 When a malfunction is detected in side/decel G signal.
C1155
 When brake fluid level low signal is detected.
 When an open circuit is detected in brake fluid level switch circuit.
C1160 When calibration of yaw rate/side/decal G sensor is not complete.
C1164 When a malfunction is detected in cut valve 1. The following functions are sus- pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential (BLSD) function
C1165 When a malfunction is detected in cut valve 2.
C1166 When a malfunction is detected in suction valve 1.
C1167 When a malfunction is detected in suction valve 2. DTC Malfunction detected condition Fail-safe condition
Revision: 2010 May2011 QX56

BRC-64
< BASIC INSPECTION >[WITH VDC]
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
DescriptionINFOID:0000000006222588
Always adjust the neutral position of steering angle sensor before driving when the following operation is per-
formed.
× : Required —: Not required
Work ProcedureINFOID:0000000006222589
ADJUST THE NEUTRAL POSITION OF STEERING ANGLE SENSOR
CAUTION:
Always use CONSULT-III when adju sting the neutral position of steering angle sensor. (It cannot be
adjusted other than with CONSULT-III.)
1.CHECK THE VEHICLE STATUS
Stop vehicle with front wheels in the straight-ahead position.
Does the vehicle stay in the straight-ahead position?
YES >> GO TO 2.
NO >> Steer the steering wheel to the st raight-ahead position. Stop the vehicle.
2.ADJUST NEUTRAL POSITION OF STEERING ANGLE SENSOR
With CONSULT-III.
1. Turn the ignition switch ON.
CAUTION:
Never start engine.
2. Select “ABS”, “WORK SUPPORT” and “ST AN GLE SENSOR ADJUSTMENT” in this order.
3. Select “START”. CAUTION:
Never touch steering wheel while adjusting steering angle sensor.
4. After approx. 10 seconds, select “END”.
5. Turn ignition switch OFF and then turn it ON again. CAUTION:
Be sure to perform the operation above.
>> GO TO 3.
3.CHECK DATA MONITOR
With CONSULT-III.
1. The vehicle is either pointing straight ahead or t he vehicle needs to be moved. Stop when it is pointing
straight ahead.
Procedure Adjust the neutral position of steering angle sensor
Removing/ installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) —
Removing/installing steering angle sensor ×
Replacing steering angle sensor ×
Removing/installing steering components ×
Replacing steering components ×
Removing/installing suspension components ×
Replacing suspension components ×
Removing/installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment. ×
Revision: 2010 May2011 QX56

CCS-54
< ECU DIAGNOSIS INFORMATION >[ICC]
ICC SENSOR
ICC SENSOR
Reference ValueINFOID:0000000006224285
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
VHCL SPEED SE While driving Value of vehicle
speed signal
(wheel speed)
YAW RATE While driving Vehicle stopped 0.0
Vehicle turning right Positive value
Vehicle turning left Negative value
PWR SUP MONI Ignition switch ON Power supply
voltage value of ICC sensor
DISTANCE Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the dis-
tance from the
preceding vehi- cle
When a vehicle ahead is not detected 0.0
RELATIVE SPD Drive the vehicle and activate
the vehicle-to-vehicle distance
control mode When a vehicle ahead is detected
Displays the rel-
ative speed
When a vehicle ahead is not detected 0.0
LASER OFFSET NOTE:
The item is indicated, but not used
—
LASER HEIGHT NOTE:
The item is indicated, but not used —
STEERING ANGLE Ignition switch ON When setting the steering wheel in straight-ahead posi-
tion
0.0
When turning the steering wheel 90 ° rightward +90
When turning the steering wheel 90 ° leftward -90
STRG ANGLE
SPEED Ignition switch ON At the time of turning the steering wheel Steering wheel
turning speed is
displayed
L/R ADJUST Ignition switch ON At the completion of laser beam adjustment Horizontal cor-
rection value is
displayed
U/D ADJUST Ignition switch ON At the completion of laser beam adjustment Vertical correc-
tion value is dis-
played
JPOIA0105ZZ
Revision: 2010 May2011 QX56