2010 INFINITI QX56 brake fluid

FRONT DISC BRAKEBR-41
< DISASSEMBLY AND ASSEMBLY >
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3. Apply Molykote M-77 grease to piston boots. Cover the piston ends with piston boots, and then install cylinder side lip on piston
boots securely into the grooves on cylinder body.
CAUTION:
Do not reuse piston boots.
4. Apply clean brake fluid to pistons, then install pistons into cylin- der body and insert piston boot side lip into groove of pistons as
shown.
CAUTION:
Press the pistons evenly to prevent damage to cylinder
wall.
5. Apply rubber grease and insert into cylinder body by hand and insert piston bo\
ot piston-side lip into piston groove.
CAUTION:
Press pistons evenly and vary the pr essing point to prevent cylinder inner wall from being rubbed.
6. Apply rubber grease and install sliding pins, bushing and sliding pin boots to torque member.
7. Install the pads, shims, shim cover, and pad retainers from the torque member.
8. Install cylinder body. Tighten sliding pin bolts to the specified torque.
SFIA2432E
WFIA0211E
Revision: April 20092010 QX56

BR-42
< DISASSEMBLY AND ASSEMBLY >
REAR DISC BRAKE
REAR DISC BRAKE
Disassembly and AssemblyINFOID:0000000005147924
DISASSEMBLY
1. Remove pads from cylinder body.
2. Remove sliding sleeve and boot from cylinder body.
3. Place a wooden block as shown, and blow air into union bolthole to remove piston and piston boot.
CAUTION:
Do not get your fingers caught in piston.
1. Union bolt 2. Brake hose3. Copper washer
4. Cap 5. Bleed valve6. Sliding pin bolt
7. Cylinder body 8. Piston seal9. Piston
10. Piston boot 11. Knuckle slide12. Sliding sleeve boot
13. Sliding sleeve B. Brake fluidR. Rubber grease
M. Molykote M-77 Front
AWFIA0423GB
BRD0041D
Revision: April 20092010 QX56

REAR DISC BRAKEBR-43
< DISASSEMBLY AND ASSEMBLY >
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4. Using a suitable tool, remove piston seal from cylinder body as shown.
CAUTION:
Be careful not to damage cylinder body inner wall.
5. Remove the bleeder valve and cap.
CALIPER INSPECTION
Cylinder Body
Check inside surface of cylinder body for score, rust wear, damage or foreign materials. If any of the above
conditions are observed, replace cylinder body.
Minor damage from rust or foreign materials may be eliminated by polishing surface with a fine emery paper.
Replace cylinder body if necessary.
CAUTION:
• Use new brake fluid to clean. Do not use mi neral oils such as gasoline or kerosene.
Torque Member
Check for wear, cracks, and damage. If damage or deformation is present, replace the affected part.
Piston
Check piston for score, rust, wear, damage or presence of foreign materials. Replace if any of the above con-
ditions are observed.
CAUTION:
• Piston sliding surface is plated, do not polish with emery paper even if rust of foreign materials are
stuck to sliding surface.
Sliding Pin Bolts and Sliding Pin Boots
Make sure there is no wear, damage, or cracks in sliding sleeve and sliding sleeve boots, and if there are,
replace them.
ASSEMBLY
CAUTION:
Do not use NISSAN Rubber Grease ( KRE00 00010, KRE00 00010 01) when assembling.
1. Install the bleeder valve and cap.
2. Apply clean brake fluid to new piston seal and insert in to groove on cylinder body.
CAUTION:
Do not reuse piston seal.
PFIA0269E
WFIA0210E
Revision: April 20092010 QX56

BR-44
< DISASSEMBLY AND ASSEMBLY >
REAR DISC BRAKE
3. Apply clean brake fluid to piston and to piston boot, then installpiston boot in to piston groove.
CAUTION:
Do not reuse piston boot.
4. Insert into cylinder body by hand and insert piston boot piston-side lip into piston groove. CAUTION:
Press piston evenly and vary the pressing point to prevent cylinder body inner wall from being
rubbed.
5. Apply rubber grease to sliding sleeves, then install sliding boots and sleeves to cylinder body.
WFIA0211E
Revision: April 20092010 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)BR-45
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000005147925
Unit: mm (in)
Brake PedalINFOID:0000000005147926
Unit: mm (in)
CAUTION:
When equipped with adjustable pedal, the pedal must be in the forward most position (closest to the floor) for pedal height
adjustment. Front brake Brake model
AD41VA
Rotor outer diameter × thickness 350 x 30 (13.78 x 1.181)
Pad Length × width × thickness 151.6 x 56.5 x 12.0 (5.97 x 2.22 x 0.476)
Cylinder bore diameter 50.8 (2.00)
Rear brake Brake model AD14VE
Rotor outer diameter × thickness 320 x 14 (12.60 x 0.551)
Pad Length × width × thickness 83.0 x 33.0 x 12.0 (3.268 x 1.299 x 0.472)
Cylinder bore diameter 48 (1.89)
Control valve Valve model Electric brake force distribution
Brake booster Booster model C215T
Diaphragm diameter 215 (8.46)
Recommended brake fluid Refer to MA-13, "
Fluids and Lubricants".
Pedal free height (H) with pedal in forward most position 182.3 - 192.3 (7.18 - 7.57)
Pedal travel (T) 153.3 (6.04)
Stop lamp switch and ASCD cancel switch threaded end to brake pedal bracket gap 0.74 - 1.96 (0.029 - 0.077)
ALFIA0149ZZ
Revision: April 20092010 QX56

BRC-2
C1110, C1170 ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT) ...........................
36
DTC Logic ...............................................................36
Diagnosis Procedure ..............................................36
Special Repair Requirement ...................................36
C1111 ABS MOTOR, MOTOR RELAY SYS-
TEM ................................................................. ...
37
Description ........................................................... ...37
DTC Logic ...............................................................37
Diagnosis Procedure ..............................................37
Component Inspection ............................................38
Special Repair Requirement ...................................38
C1113, C1145, C1146 YAW RATE/SIDE/DE-
CEL G SENSOR ............................................. ...
39
Description ........................................................... ...39
DTC Logic ...............................................................39
Diagnosis Procedure ..............................................39
Component Inspection ............................................40
Special Repair Requirement ...................................40
C1115 WHEEL SENSOR ................................ ...42
Description ........................................................... ...42
DTC Logic ...............................................................42
Diagnosis Procedure ..............................................42
Component Inspection ............................................43
Special Repair Requirement ...................................44
C1116 STOP LAMP SWITCH ......................... ...45
Description ........................................................... ...45
DTC Logic ...............................................................45
Diagnosis Procedure ..............................................45
Special Repair Requirement ...................................46
C1120, C1122, C1124, C1126 IN ABS SOL .....47
Description ........................................................... ...47
DTC Logic ...............................................................47
Diagnosis Procedure ..............................................47
Component Inspection ............................................48
Special Repair Requirement ...................................48
C1121, C1123, C1125, C1127 OUT ABS SOL ...50
Description ........................................................... ...50
DTC Logic ...............................................................50
Diagnosis Procedure ..............................................50
Component Inspection ............................................51
Special Repair Requirement ...................................51
C1130, C1131, C1132, C1133, C1136 EN-
GINE SIGNAL ................................................. ...
53
Description ........................................................... ...53
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................53
Special Repair Requirement ...................................53
C1140 ACTUATOR RLY ................................ ...55
Description ........................................................... ...55
DTC Logic ...............................................................55
Diagnosis Procedure ..............................................55
Component Inspection ......................................... ...56
Special Repair Requirement ...................................56
C1142 PRESS SENSOR ...................................57
Description ........................................................... ...57
DTC Logic ...............................................................57
Diagnosis Procedure ...............................................57
Component Inspection ............................................59
C1143, C1144 STEERING ANGLE SENSOR ...60
Description ..............................................................60
DTC Logic ...............................................................60
Diagnosis Procedure ...............................................60
Component Inspection ............................................61
Special Repair Requirement ...................................61
C1155 BRAKE FLUID LEVEL SWITCH ...........63
Description ........................................................... ...63
DTC Logic ...............................................................63
Diagnosis Procedure ...............................................63
Component Inspection ............................................64
Special Repair Requirement ...................................64
C1156 ST ANG SEN COM CIR .........................66
Description ..............................................................66
DTC Logic ...............................................................66
Diagnosis Procedure ...............................................66
C1160 DECEL G SEN SET ...............................67
Description ..............................................................67
DTC Logic ...............................................................67
Diagnosis Procedure ...............................................67
C1163 ST ANGLE SEN SAFE ..........................68
Description ........................................................... ...68
DTC Logic ...............................................................68
Diagnosis Procedure ...............................................68
C1164, C1165, C1166, C1167 CV/SV SYS-
TEM ....................................................................
69
Description ........................................................... ...69
DTC Logic ...............................................................69
Diagnosis Procedure ...............................................69
Component Inspection ............................................70
Special Repair Requirement ...................................71
C1178, C1181, C1184, C1189 ABS ACTIVE
BOOSTER .........................................................
72
Description ........................................................... ...72
DTC Logic ...............................................................72
Diagnosis Procedure ...............................................72
Component Inspection ............................................73
Special Repair Requirement ...................................73
C1179 ABS DELTA S SEN NG .........................75
Description ........................................................... ...75
DTC Logic ...............................................................75
Diagnosis Procedure ...............................................75
Component Inspection ............................................76
Special Repair Requirement ...................................76
Revision: April 20092010 QX56

VDC
BRC-13
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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Component DescriptionINFOID:0000000005147949
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
10. Brake fluid level switch E21 11. Front pressure sensor E31 12. Rear pressure sensor E32
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-37, "
Description"Motor
Actuator relayBRC-55, "
Description"
Solenoid valveBRC-47, "Description"
VDC switch-over valve
(CV1, CV2, SV1, SV2)BRC-69, "Description"
Wheel sensor
BRC-28, "Description"
Yaw rate/side/decel G sensorBRC-39, "Description"
Steering angle sensorBRC-60, "Description"
VDC OFF switchBRC-80, "Description"
ABS warning lampBRC-82, "Description"
Brake warning lampBRC-83, "Description"
VDC OFF indicator lampBRC-84, "Description"
SLIP indicator lampBRC-86, "Description"
Front pressure sensor
BRC-57, "Description"Rear pressure sensor
Active boosterBRC-72, "
Description"
Delta stroke sensorBRC-75, "Description"
Revision: April 20092010 QX56

BRC-14
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
TCS
System DiagramINFOID:0000000005147950
System DescriptionINFOID:0000000005147951
• Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
• During TCS operation, it informs driver of syst em operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0065GB
Revision: April 20092010 QX56