height INFINITI QX56 2011 Factory Service Manual

QUICK REFERENCE CHART QX56
BRAKE PEDAL
Unit : mm (in)
FRONT DISK BRAKE
Unit : mm (in)
REAR DISK BRAKE
Unit : mm (in)
REFILL CAPACITIESELS00040
Item Standard
Brake pedal height 168.5 (6.63) – 178.5 (7.03)
Depressed brake pedal height
[Depressing 490 N (50 kg, 110 lb) while turning the engine ON] 100 (3.94) or more
Item Limit
Brake pad Wear thickness 1.5 (0.059)
Disc rotor Wear thickness 28.5 (1.122)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout (with it attached to the vehicle) 0.053 (0.0021)
Item Limit
Brake pad Wear thickness 2.0 (0.079)
Disc rotor Wear thickness 18.0 (0.709)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout (with it attached to the vehicle) 0.05 (0.0020)
UNIT
Liter US measure
Fuel tank 98.4 26 gal
Engine Coolant ( With reservoir tank ) at MAX level 14.9 15-6/8 qt
Engine oil Drain and refill
With oil filter change 6.5 6-7/8 qt
Without oil filter change 6.2 6-4/8 qt
Dry engine (Overhaul) 7.6 8 qt
Transmission 10.0 10-5/8 qt
Transfer 1.5 3-1/8 pt
Final drive Front 0.75 1-5/8 pt
Rear 1.75 3-3/4 pt
Power steering system 1.0 7/8 qt
Air conditioning system Compressor oil 0.21 7.1 fl oz
Refrigerant 1.05 kg 2.32 lb
2011

BRAKE PEDALBR-7
< PERIODIC MAINTENANCE >
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PERIODIC MAINTENANCE
BRAKE PEDAL
Inspection and AdjustmentINFOID:0000000006222462
INSPECTION
Brake Pedal Height
Check the brake pedal height (H1) between the dash lower panel (1)
and the brake pedal upper surface.
CAUTION:
Perform it with the floor trim removed.
Stop Lamp Switch and Brake Switch
Check the clearance (C) between the brake pedal bracket (1) and
the stop lamp switch and brake switch (2) threaded end.
CAUTION:
The stop lamp must turn off when the brake pedal is released.
NOTE:
Pull the brake pedal pad to make the clearance between the stop
lamp switch and brake switch threaded end and the brake pedal
bracket.
Brake Pedal Play
Press the brake pedal. Check the brake pedal play (A) (stroke until
fluid pressure occurs).
Depressed Brake Pedal Height
Check the height between the dash lower panel (1) and the top face
of the brake pedal (H
2) when depressing the brake pedal with a force
of 490 N (50 kg, 110 lb) while the engine is running.
CAUTION:
Perform it with the floor trim removed.
ADJUSTMENT
H1: Refer to BR-47, "Brake Pedal".
JPFIA0065ZZ
C : Refer to BR-47, "Brake Pedal".
JPFIA0674ZZ
A : Refer to BR-47, "Brake Pedal".
JPFIA0277ZZ
H2: Refer to BR-47, "Brake Pedal".
JPFIA0068ZZ
Revision: 2010 May2011 QX56

BR-8
< PERIODIC MAINTENANCE >
BRAKE PEDAL
Brake Pedal Height
1. Remove instrument lower panel LH. Refer to IP-14, "Removal and Installation".
2. Disconnect the stop lamp switch harness c onnector and the brake switch harness connector.
3. Loosen the stop lamp switch and brake switch by turning it 45 ° counterclockwise.
4. Loosen the input rod lock nut (1).
5. Rotate the input rod (2), and adjust the brake pedal to the speci- fied height.
CAUTION:
 Perform it with the floor trim removed.
 The threaded end of the in put rod must project to the
inner side of the clevis (3).
6. Tighten the lock nut. Refer to BR-28, "
Exploded View".
7. Adjust the clearance between the brake pedal bracket and the stop lamp switch and brake switch threaded end after adjusting
the brake pedal height.
Stop Lamp Switch and Brake Switch
1. Remove instrument lower panel LH. Refer to IP-14, "Removal and Installation".
2. Disconnect the stop lamp switch harness c onnector and the brake switch harness connector.
3. Loosen the stop lamp switch and brake switch by turning it 45 ° counterclockwise.
4. Press-fit the stop lamp switch and brake switch (2) until the stop
lamp switch and brake switch hits the brake pedal bracket (1)
45 ° clockwise while pulling the brake pedal pad slightly.
CAUTION:
 The clearance (C) between the brake pedal bracket and
stop lamp switch and brake switch threaded end and
must be the specified value.
 The stop lamp must turn off when the brake pedal is released.
Brake Pedal Play
1. Remove instrument lower panel LH. Refer to IP-14, "Removal and Installation".
2. Disconnect the stop lamp switch harness c onnector and the brake switch harness connector.
3. Loosen the stop lamp switch and brake switch by turning it 45 ° counterclockwise.
JPFIA0662ZZ
H1: Refer to BR-47, "Brake Pedal".
JPFIA0279ZZ
C : Refer to BR-47, "Brake Pedal".
JPFIA0674ZZ
Revision: 2010 May2011 QX56

BRAKE PEDALBR-9
< PERIODIC MAINTENANCE >
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4. Press-fit the stop lamp switch and brake switch (2) until the stop
lamp switch and brake switch hits the brake pedal bracket (1)
45 ° clockwise while pulling the brake pedal pad slightly.
CAUTION:
 The clearance (C) between the brake pedal bracket and stop lamp switch and brake switch threaded end and
must be the specified value.
 The stop lamp must turn off when the brake pedal is released.
Depressed Brake Pedal Height
1. Perform the air bleeding. Refer to BR-11, "Bleeding Brake System".
2. Check the height between the dash lower panel (1) and the top face of the brake pedal (H
2) when depressing the brake pedal
with a force of 490 N (50 kg, 110 lb) while the engine is running.
CAUTION:
Perform it with the floor trim removed.
3. Adjust the brake pedal play after adjusting the brake pedal height, clearance between the brake pedal bracket and the stop
lamp switch and brake switch threaded end.C : Refer to
BR-47, "
Brake Pedal".
JPFIA0674ZZ
H2: Refer to BR-47, "Brake Pedal".
JPFIA0068ZZ
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
BR-47
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000006222502
Unit: mm (in)
Brake PedalINFOID:0000000006222503
Unit: mm (in)
Brake BoosterINFOID:0000000006222504
Unit: mm (in)
Front Disc BrakeINFOID:0000000006222505
Unit: mm (in)
Rear Disc BrakeINFOID:0000000006222506
Unit: mm (in)
Front brake Cylinder bore diameter 50.8 (2.000)
× 2
Pad length × width × thickness 151.6 (5.97) × 56.5 (2.224) × 12.0 (0.472)
Rotor outer diameter × thickness 350 (13.78) × 30.0 (1.181)
Rear brake Cylinder bore diameter 48.1 (10894)
Pad length
× width × thickness 110.0 (4.43) × 41.0 (1.614) × 9.0 (0.354)
Rotor outer diameter × thickness 350 (13.78) × 20.0 (0.787)
Control valve Valve type Electric brake force distribution
Recommended brake fluid Refer to MA-10, "
Fluids and Lubricants".
Item Standard
Brake pedal height 168.5 (6.63) – 178.5 (7.03)
Depressed brake pedal height
[Depressing 490 N (50 kg, 110 lb) while turning the engine ON] 100 (3.94) or more
Clearance between stop lamp switch and brake switch threaded end and the
brake pedal bracket 0.2 (0.008) – 1.96 (0.0772)
Brake pedal play 3 (0.12) – 11 (0.43)
Item Standard
Input rod length 202.2 (7.96)
Item Limit
Brake pad Wear thickness 1.5 (0.059)
Disc rotor Wear thickness 28.5 (1.122)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout (with it attached to the vehicle) 0.053 (0.0021)
Item Limit
Brake pad Wear thickness 2.0 (0.079)
Disc rotor Wear thickness 18.0 (0.709)
Thickness variation (measured at 8 positions) 0.015 (0.0006)
Runout (with it attached to the vehicle) 0.05 (0.0020)
Revision: 2010 May2011 QX56

BRC-128
< SYMPTOM DIAGNOSIS >[WITH VDC]
UNEXPECTED BRAKE PEDAL REACTION
UNEXPECTED BRAKE PEDAL REACTION
DescriptionINFOID:0000000006222659
A malfunction of brake pedal feel (height or ot
hers) is detected when brake pedal is depressed.
Diagnosis ProcedureINFOID:0000000006222660
1.CHECK FRONT AND REAR AXLE
Check that there is no excessive looseness in front and rear axle.
 Front axle: Refer to FAX-7, "
Inspection" (2WD), FAX-16, "Inspection" (4WD).
 Rear axle: Refer to RAX-5, "
Inspection"
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK DISC ROTOR
Check disc rotor runout.
 Front: Refer to BR-16, "
DISC ROTOR : Inspection and Adjustment".
 Rear: Refer to BR-18, "
DISC ROTOR : Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Refinish or replace disc rotor.  Front: Refer to BR-16, "
DISC ROTOR : Inspection and Adjustment".
 Rear: Refer to BR-18, "
DISC ROTOR : Inspection and Adjustment".
3.CHECK BRAKE FLUID LEACKAGE
Check fluid leakage.
 Front: Refer to BR-24, "
FRONT : Inspection".
 Rear: Refer to BR-26, "
REAR : Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK BRAKE PEDAL
Check each item of brake pedal. Refer to BR-7, "
Inspection and Adjustment".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Adjust each item of brake pedal. Refer to BR-7, "
Inspection and Adjustment".
5.CHECK BRAKING FORCE
Check brake force using a brake tester.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check each components of brake system.
6.CHECK BRAKE PERFORMANCE
Disconnect ABS actuator and electric unit (control unit) connector so that ABS does not operate. Check that
brake force is normal in this condition. Connect harness connectors after checking.
Is the inspection result normal?
YES >> Normal
NO >> Check each components of brake system.
Revision: 2010 May2011 QX56

CCS
DIAGNOSIS SYSTEM (ICC SENSOR)CCS-41
< SYSTEM DESCRIPTION > [ICC]
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DIAGNOSIS SYSTEM (ICC SENSOR)
CONSULT-III Function (LASER)INFOID:0000000006224280
APPLICATION ITEMS
CONSULT-III performs the following functions via CAN communication with ADAS control unit and the com-
munication with ICC sensor.
WORK SUPPORT
Laser Beam Adjust
Refer to CCS-72, "Description".
SELF DIAGNOSTIC RESULT
Refer to CCS-55, "DTC Index".
DATA MONITOR
Diagnosis mode Description
Work Support It can monitor the adjustment direction indication in order to perform the laser beam aiming operation
smoothly
Self Diagnostic Result Displays malfunctioning system memorized in ICC sensor
Data Monitor Displays real-time input/output data of ICC sensor
Ecu Identification Displays ICC sensor part number
CAN Diag Support Monitor The results of transmit/receive diagnosis of ITS communication can be read
Work support items Description
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction
Monitored item
[Unit] Description
VHCL SPEED SE
[km/h] or [mph] Vehicle speed judged from a vehicle speed signal read by the ICC sensor via ITS communica-
tion is displayed [ADAS control unit receives a vehicle speed signal from ABS actuator and
electric unit (control unit) via CAN communication and transmits the calculated vehicle speed
to ICC sensor via ITS communication]
YAW R AT E
[deg/s] Indicates yaw rate read from ADAS control unit through ITS communication (ADAS control unit
receives yaw rate signal from ABS actuator and electric unit (control unit) via CAN communi-
cation and transmits yaw rate calculated by the ADAS control unit)
Yaw rate judged from a yaw rate signal read by ICC sensor via ITS communication is displayed
[ADAS control unit receives a yaw
rate signal from ABS actuator and electric unit (control unit)
via CAN communication and transmits the calculated yaw rate to ICC sensor via ITS commu-
nication]
PWR SUP MONI
[V] Indicates IGN voltage input by ICC sensor
DISTANCE
[m] Indicates the distance from the vehicle ahead
RELATIVE SPD
[m/s] Indicates the relative speed of the vehicle ahead
LASER OFFSET
[m] NOTE:
The item is indicated, but not used
LASER HEIGHT
[m] NOTE:
The item is indicated, but not used
STEERING ANGLE
[deg] The steering angle is displayed
STRG ANGLE SPEED
[deg/s] The steering angle speed is displayed
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

CCS-72
< BASIC INSPECTION >[ICC]
LASER BEAM AIMING ADJUSTMENT
LASER BEAM AIMING ADJUSTMENT
DescriptionINFOID:0000000006224293
OUTLINE OF LASER BEAM AIMING ADJUSTMENT
Always adjust the laser beam aiming after removing and installing or replacing the ICC sensor.
CAUTION:
The system does not operate normally
unless the laser beam aiming adjustment is performed. Always
perform it.
1. Set the ICC target board [SST: KV99110100 (J-45718)] to the correct position in front of the vehicle.
2. Set the laser beam aiming mode (“LASER BEAM AD JUST” on “Work support”) with CONSULT-III, and
then perform the adjustment according to the displa y. (Manually turn the up-down direction adjusting
screw for vertical adjustment. ICC sensor adjusts the automatic aiming for the horizontal direction.)
CAUTIONARY POINT FOR LASER BEAM AIMING ADJUSTMENT
CAUTION:
 For laser beam aiming adjustment, choose a level location where a view can be obtained without any
obstruction as far as 12 m (39 ft) or more in the forward direction.
 Adjust laser beam aiming for 5 second s or more after starting engine.
 Adjust the laser beam aiming with CONSULT-III. (The laser beam aiming cannot be adjusted without
CONSULT-III.)
 Never enter the vehicle during laser beam aiming adjustment.
 Never look directly into the laser beam sour ce (ICC sensor body window) during laser beam aiming
adjustment.
 Laser beam aiming adjustment is performed at idle. At this time, turn the headlamps OFF.
Work Procedure (Preparation)INFOID:0000000006224294
1.ADVANCE PREPARATION FOR LASER BEAM AIMING ADJUSTMENT
1. Adjust all tire pressure to the specified value.
2. Empty the vehicle. (Remove any luggage from the passenger compartment, luggage room, etc.)
3. Shift the selector lever to “P” pos ition, and release the parking brake.
4. Fully fill the fuel tank, and then check that t he coolant and oils are filled up to correct level.
5. Clean off the ICC sensor body window with a soft cloth.
>> Go to CCS-72, "
Work Procedure (Setting The ICC Tar-
get Board)".
Work Procedure (Setting The ICC Target Board)INFOID:0000000006224295
DESCRIPTION
Accurate adjustment of the laser beam requires t hat the ICC target board be accurately positioned.
CAUTION:
If the laser beam is adjusted with the ICC target board in the incorrect position, the ICC system does
not function normally.
1.ICC TARGET BOARD HEIGHT ADJUSTMENT
1 : ICC sensor
JSOIA0372ZZ
Revision: 2010 May2011 QX56

CCS
LASER BEAM AIMING ADJUSTMENTCCS-73
< BASIC INSPECTION > [ICC]
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1. Attach the ruler (2) at 14 mm (0.55 in) (H) below the center (A) of\
the ICC target board (1).
2. Adjust the ICC target board height to the position aligning the ruler (1) upper side tip with the center of laser beam axis (A).
NOTE:
 The center of laser beam axis (A) is located at 38 mm (1.5 in) (W)
from the left end of ICC sensor and 22 mm (H) (0.87 in) from above
when viewed from the front of the vehicle.
 To identify the laser beam axis center (A) easily, prepare a piece of paper (B) cut to the size of 38 mm (1.5 in) (W) × 22 mm (0.87 in)
(H) and attach it on the lower left point of the ICC sensor (1).
>> GO TO 2.
2.ADJUSTING SIDE POSITION OF ICC TARGET BOARD
3: Adjust nut
b: 90 °
JPOIA0215ZZ
2 : ICC sensor
JSOIA0351ZZ
B : Up-down direction adjusting screw
JSOIA0216ZZ
JSOIA0217ZZ
Revision: 2010 May2011 QX56