FRONT DISC BRAKEBR-43
< UNIT DISASSEMBLY AND ASSEMBLY >
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2. Remove the piston seal from the brake caliper using a suitable tool. Discard the piston seal.
CAUTION:
• Be careful not to damage the cylinder inner wall.
• Do not reuse the piston seal.
BRAKE CALIPER ASSEMBLY : In spection After DisassemblyINFOID:0000000009463722
BRAKE CALIPER
Check the inner wall of brake caliper for co rrosion, wear, and damage. Replace as necessary.
CAUTION:
Clean the brake caliper using new br ake fluid. Do not use mineral oils such as gasoline or kerosene.
TORQUE MEMBER
Check torque member for wear, cracks, and damage. Replace as necessary.
PISTON
Check the piston surface for corrosion, wear, and damage. Replace as necessary.
CAUTION:
The piston sliding surface is plated . Do not polish with sandpaper.
SLIDING PIN, SLIDING PIN BOOT, SLIDING PIN BOLT
Check the sliding pin, sliding pin bolt, and sliding pin boot for wear, damage, and cracks. Replace as neces-
sary.
BRAKE CALIPER ASSEMBLY : AssemblyINFOID:0000000009463723
CAUTION:
Use NISSAN Rubber Grease during assembly.
1. Apply rubber grease to new piston seal (1), and install on brake caliper.
CAUTION:
Do not reuse piston seal.
2. Apply rubber grease to new piston boot (1). Cover the piston (2) end with new piston boot, and then install cylinder side lip on
new piston boot securely into a groove on brake caliper.
CAUTION:
Do not reuse piston boot.
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BR-46
< UNIT DISASSEMBLY AND ASSEMBLY >
REAR DISC BRAKE
2. Place a wooden block in the brake caliper as shown, and blowair into the union bolt hole to the remove piston and piston boot.
WARNING:
Do not get fingers caught be tween the piston and wooden
block.
3. Remove the piston seal from the brake caliper using a suitable tool. Discard the piston seal.
CAUTION:
• Be careful not to damage the cylinder inner wall.
• Do not reuse the piston seal.
BRAKE CALIPER ASSEMBLY : In spection After DisassemblyINFOID:0000000009463726
BRAKE CALIPER
Check the inner wall of the cylinder for corrosion, wear, and damage. Replace as necessary.
CAUTION:
Clean the brake caliper using new br ake fluid. Do not use mineral oils such as gasoline or kerosene.
TORQUE MEMBER
Check the torque member for wear, cr acks, and damage. Replace as necessary.
PISTON
Check the piston surface for corrosion, wear, and damage. Replace as necessary.
CAUTION:
The piston sliding surface is plated . Do not polish with sandpaper.
SLIDING PIN BOLT, SLIDING PIN BOOT
Check the sliding pin bolt and sliding pin boot fo r wear, damage, and cracks. Replace as necessary.
BRAKE CALIPER ASSEMBLY : AssemblyINFOID:0000000009463727
CAUTION:
Use NISSAN Rubber Grease during assembly.
1. Apply rubber grease to new piston seal (1), and install on brake caliper.
CAUTION:
Do not reuse piston seal.
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BR-48
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationsINFOID:0000000009463728
Unit: mm (in)
Brake PedalINFOID:0000000009463729
Unit: mm (in)
Front brakeCylinder bore diameter 57.2 (2.252)
Pad length × width × thickness 114 × 47 × 10 (4.488 × 1.850 × 0.394)
Rotor outer diameter × thickness 296 × 26 (11.654 × 1.024)
Rear brake Cylinder bore diameter 34.93 (1.375)
Pad length × width × thickness 83 × 33 × 8.5 (3.268 × 1.299 × 0.335)
Rotor outer diameter × thickness 292 × 9 (11.496 × 0.354)
Master cylinder Cylinder bore diameter 25 (0.984)
Control valve Valve model Electric brake force distribution
Brake booster Diaphragm diameter 280 (11)
Recommended brake fluid DOT 3
Item Standard
Brake pedal height (H) (from dash lower panel top surface) 181.4 - 191.4 (7.1 - 7.5)
Brake pedal full stroke (S) 135.3 (5.3)
Clearance between stopper bracket (C
1) and threaded end of the stop lamp
switch and ASCD cancel switch (C
2) 0.74 - 1.96 (0.0291 - 0.0772)
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BRC-1
BRAKES
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SECTION BRC
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CONTENTS
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
PRECAUTION ................ ...............................
4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Precaution for Brake System ....................................4
Precaution for Brake Control .....................................5
Precaution for CAN System ................................ ......5
Precaution for Work ..................................................6
PREPARATION ............................................7
PREPARATION .............................................. .....7
Special Service Tool ........................................... ......7
Commercial Service Tool ..........................................7
SYSTEM DESCRIPTION ..............................8
COMPONENT PARTS ................................... .....8
Component Parts Location .................................. ......8
Component Description .............................................9
ABS Actuator and Electric Unit (Control Unit) ...........9
Wheel Sensor and Sensor Rotor ............................10
Stop Lamp Switch ...................................................10
Steering Angle Sensor ............................................10
Brake Fluid Level Switch .........................................10
Vacuum Sensor .......................................................10
Parking Brake Switch ..............................................11
VDC OFF Switch .....................................................11
SYSTEM .............................................................12
VDC/TCS/ABS ....................................................... ....12
VDC/TCS/ABS : System Diagram ...........................12
VDC/TCS/ABS : System De scription ......................12
VDC/TCS/ABS : VDC Functi on ...............................23
VDC/TCS/ABS : TCS Functi on ...............................25
VDC/TCS/ABS : ABS Function ........................... ....27
VDC/TCS/ABS : EBD Functi on ...............................28
VDC/TCS/ABS : Fail-safe ... .....................................29
DIAGNOSIS SYSTEM [ABS ACTUATOR
AND ELECTRIC UNIT (CONTROL UNIT)] .......
33
CONSULT Function (ABS) .................................. ....33
ECU DIAGNOSIS INFORMATION ..............38
ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT) .............................................
38
Reference Value .................................................. ....38
Fail-safe ...................................................................41
DTC Inspection Priority Chart ..................................44
DTC Index ...............................................................45
WIRING DIAGRAM ......................................47
BRAKE CONTROL SYSTEM ...........................47
Wiring Diagram .................................................... ....47
BASIC INSPECTION ...................................55
DIAGNOSIS AND REPAIR WORK FLOW .......55
Work Flow ............................................................ ....55
Diagnostic Work Sheet ............................................56
ADDITIONAL SERVICE WHEN REPLACING
ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT) .............................................
57
Description ........................................................... ....57
ADJUSTMENT OF STEERING ANGLE SEN-
SOR NEUTRAL POSITION ...............................
58
Description ........................................................... ....58
Work Procedure .......................................................58
CONFIGURATION [ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT)] ................
60
Work Procedure ................................................... ....60
CALIBRATION OF DECEL G SENSOR ...........62
Description ...............................................................62
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-2
Work Procedure ......................................................62
DTC/CIRCUIT DIAGNOSIS ...................... ...64
C1101, C1102, C1103, C1104 WHEEL SEN-
SOR ................................................................. ...
64
DTC Logic ............................................................ ...64
Diagnosis Procedure ..............................................64
C1105, C1106, C1107, C1108 WHEEL SEN-
SOR ................................................................. ...
68
DTC Logic ............................................................ ...68
Diagnosis Procedure ..............................................68
C1109 POWER AND GROUND SYSTEM .........70
DTC Logic ............................................................ ...70
Diagnosis Procedure ..............................................70
C1110, C1153, C1170 ABS ACTUATOR AND
ELECTRIC UNIT (CONTROL UNIT) .............. ...
72
DTC Logic ............................................................ ...72
Diagnosis Procedure ..............................................72
C1111 PUMP MOTOR .......................................73
DTC Logic ............................................................ ...73
Diagnosis Procedure ..............................................73
C1113, C1145, C1146 YAW RATE/SIDE/DE-
CEL G SENSOR ............................................. ...
75
DTC Logic ............................................................ ...75
Diagnosis Procedure ..............................................75
C1115 ABS SENSOR [ABNORMAL SIGNAL] ...76
DTC Logic ............................................................ ...76
Diagnosis Procedure ..............................................76
C1116 STOP LAMP SWITCH ............................78
DTC Logic ............................................................ ...78
Diagnosis Procedure ..............................................78
C1120, C1122, C1124, C1126 ABS IN VALVE
SYSTEM ............ .............................................. ...
80
DTC Logic ............................................................ ...80
Diagnosis Procedure ..............................................80
C1121, C1123, C1125, C1127 ABS OUT
VALVE SYSTEM ............................................. ...
82
DTC Logic ............................................................ ...82
Diagnosis Procedure ..............................................82
C1130 ENGINE SIGNAL ...................................84
DTC Logic ............................................................ ...84
Diagnosis Procedure ..............................................84
C1140 ACTUATOR RELAY SYSTEM ...............85
DTC Logic ............................................................ ...85
Diagnosis Procedure ..............................................85
C1142 PRESS SENSOR ...................................87
DTC Logic ............................................................ ...87
Diagnosis Procedure ..............................................87
C1143 STEERING ANGLE SENSOR ...............88
DTC Logic ............................................................ ...88
Diagnosis Procedure ...............................................88
C1144 INCOMPLETE STEERING ANGLE
SENSOR ADJUSTMENT ............................... ...
90
DTC Logic ............................................................ ...90
Diagnosis Procedure ...............................................90
C1154 PNP SWITCH .........................................91
Description ........................................................... ...91
DTC Logic ...............................................................91
Diagnosis Procedure ...............................................91
Special Repair Requirement ...................................91
C1155 BR FLUID LEVEL LOW .........................93
DTC Logic ............................................................ ...93
Diagnosis Procedure ...............................................93
Component Inspection ............................................94
C1160 DECEL G SEN SET ...............................95
DTC Logic ............................................................ ...95
Diagnosis Procedure ...............................................95
C1164, C1165, C1166, C1167 CV/SV SYS-
TEM ................................................................. ...
96
DTC Logic ............................................................ ...96
Diagnosis Procedure ...............................................96
C1197 VACUUM SENSOR ............................. ...98
DTC Logic ............................................................ ...98
Diagnosis Procedure ...............................................98
C1198 VACUUM SENSOR ............................. ..100
DTC Logic ............................................................ .100
Diagnosis Procedure .............................................100
C1199 BRAKE BOOSTER ............................. ..102
DTC Logic ............................................................ .102
Diagnosis Procedure .............................................102
C119A VACUUM SENSOR ..............................104
DTC Logic ............................................................ .104
Diagnosis Procedure .............................................104
U1000 CAN COMM CIRCUIT ...........................106
DTC Logic ............................................................ .106
Diagnosis Procedure .............................................106
U1002 SYSTEM COMM (CAN) ........................107
DTC Logic ............................................................ .107
Diagnosis Procedure .............................................107
PARKING BRAKE SWITCH .............................108
Component Function Check ................................ .108
Diagnosis Procedure .............................................108
Component Inspection ..........................................109
VDC OFF SWITCH ...........................................110
Component Function Check ................................ .110
Diagnosis Procedure .............................................110
Component Inspection ..........................................111
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-4
< PRECAUTION >[VDC/TCS/ABS]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951721
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 severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.
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 NISS AN/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 three minutes before performing any service.
Precaution for Brake SystemINFOID:0000000009463735
WARNING:
Clean any dust from the front brake and rear br ake using a vacuum dust collector. Do not blow by
compressed air.
• Brake fluid use refer to BR-8, "Inspection"
.
• Do not reuse drained brake fluid.
• Do not 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.
• Do not 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).
• Always connect the battery terminal when moving the vehicle.
• Turn the ignition switch OFF and disconnect the ABS actuator and
electric unit (control unit) harness connector or the battery negative
terminal before performing the work.
• Check that no brake fluid leakage is present after replacing the parts.
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PRECAUTIONSBRC-5
< PRECAUTION > [VDC/TCS/ABS]
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Precaution for Brake ControlINFOID:0000000009463736
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.
• Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine
compartment. This is a normal status of operation check.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
• When an error is indicated by ABS or another warning lamp, collect all necessary information from customer
(what symptoms are present under what conditions) and check for simple causes before starting diagnosis.
Besides electrical system inspection, check boos ter operation, brake fluid level, and fluid leaks.
• If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts, stop-
ping distance or steering stability may deteriorate.
• If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or
error.
• If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness pinches, open circuits or improper wiring.
• If the following components are replaced with non-genuine components or modified, the VDC OFF indicator
lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorbers, struts, springs , bushings, etc.), tires, wheels (exclude specified
size), components related to brake system (pads, roto rs, calipers, etc.), components related to engine (muf-
fler, ECM, etc.), components related to body reinforcement (roll bar, tower bar, etc.).
• Driving with broken or excessively worn suspensi on components, tires or brake system components may
cause the VDC OFF indicator lamp and the SLIP indicator lamp to turn on, and the VDC system may not
operate properly.
• When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The
noise is a result of the normal operation of the TCS and VDC.
• When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as sharp curves on a freeway), the VDC may not operate no rmally, or the VDC warning lamp and the SLIP indi-
cator lamp may turn on. This is not a problem if normal operation can be resumed after restarting the engine.
• Sudden turns (such as spin turns, acceleration turns), drifting, etc. with VDC turned off may cause the yaw rate/side/decel G sensor to indicate a problem. This is not a problem if normal operation can be resumed
after restarting the engine.
Precaution for CAN SystemINFOID:0000000009463737
• Do not apply voltage of 7.0V or higher to terminal to be measured.
• Maximum open terminal voltage of tester in use must be less than 7.0V.
• Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.
• Area to be repaired must be soldered and wrapped with tape. Make sure that fraying of twisted wire is within 110 mm (4.33 in).
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Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-8
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000009463741
1. IPDM E/R 2. Fuse, fusible link and relay box
(stop lamp relay)3. ABS actuator and el
ectric unit (con-
trol unit)
4. Brake fluid level switch 5. Vacuum sensor (attached to lower side of brake booster)6. Front wheel sensor LH (RH similar)
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Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM