brake sensor INFINITI QX56 2010 Factory User Guide
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2010, Model line: QX56, Model: INFINITI QX56 2010Pages: 4210, PDF Size: 81.91 MB
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BRC-1
BRAKES
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CONTENTS
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
BASIC INSPECTION ....... .............................
4
DIAGNOSIS AND REPAIR WORKFLOW ..... .....4
Work Flow ........................................................... ......4
Diagnostic Work Sheet ..............................................7
INSPECTION AND ADJUSTMENT .....................8
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
8
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
8
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
8
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION ............................................ ......
8
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION : Description ..........................
8
ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION : Special Repair Require-
ment ..........................................................................
8
CALIBRATION OF DECEL G SENSOR ............... ......9
CALIBRATION OF DECEL G SENSOR : Descrip-
tion ............................................................................
9
CALIBRATION OF DECEL G SENSOR : Special
Repair Requirement ..................................................
9
FUNCTION DIAGNOSIS ..............................11
VDC ................................................................ ....11
System Diagram .................................................. ....11
System Description .................................................11
Component Parts Location ......................................12
Component Description ...........................................13
TCS .....................................................................14
System Diagram .................................................. ....14
System Description .................................................14
Component Parts Location ......................................15
Component Description ....................................... ....16
ABS ...................................................................17
System Diagram ......................................................17
System Description ..................................................17
Component Parts Location ......................................18
Component Description ...........................................19
EBD ...................................................................20
System Diagram ......................................................20
System Description ..................................................20
Component Parts Location ......................................21
Component Description ...........................................22
DIAGNOSIS SYSTEM [ABS ACTUATOR
AND ELECTRIC UNIT (CONTROL UNIT)] .......
23
CONSULT-III Function (ABS) ..................................23
COMPONENT DIAGNOSIS .........................28
C1101, C1102, C1103, C1104 WHEEL SEN-
SOR-1 ................................................................
28
Description ........................................................... ....28
DTC Logic ................................................................28
Diagnosis Procedure ...............................................28
Component Inspection .............................................30
Special Repair Requirement ....................................30
C1105, C1106, C1107, C1108 WHEEL SEN-
SOR-2 ................................................................
31
Description ...............................................................31
DTC Logic ................................................................31
Diagnosis Procedure ...............................................31
Component Inspection .............................................33
Special Repair Requirement ....................................33
C1109 POWER AND GROUND SYSTEM ........34
Description ...............................................................34
DTC Logic ................................................................34
Diagnosis Procedure ...............................................34
Special Repair Requirement ....................................35
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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
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BRC-3
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C1185 ICC UNIT .................................................77
Description .......................................................... ....77
DTC Logic ...............................................................77
Diagnosis Procedure ...............................................77
Special Repair Requirement ...................................78
U1000 CAN COMM CIRCUIT .............................79
Description .......................................................... ....79
DTC Logic ...............................................................79
Diagnosis Procedure ...............................................79
VDC OFF SWITCH .............................................80
Description .......................................................... ....80
Component Function Check ....................................80
Diagnosis Procedure ...............................................80
Component Inspection ............................................81
Special Repair Requirement ...................................81
ABS WARNING LAMP ................................... ....82
Description .......................................................... ....82
Component Function Check ....................................82
Diagnosis Procedure ...............................................82
Special Repair Requirement ...................................82
BRAKE WARNING LAMP ............................. ....83
Description .......................................................... ....83
Component Function Check ....................................83
Diagnosis Procedure ...............................................83
Special Repair Requirement ...................................83
VDC OFF INDICATOR LAMP ........................ ....84
Description .......................................................... ....84
Component Function Check ....................................84
Diagnosis Procedure ...............................................84
Special Repair Requirement ...................................85
SLIP INDICATOR LAMP ................................ ....86
Description .......................................................... ....86
Component Function Check ....................................86
Diagnosis Procedure ...............................................86
Special Repair Requirement ...................................86
ECU DIAGNOSIS ........... ..............................87
ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT) .......................................... ....
87
Reference Value ................................................. ....87
Wiring Diagram - BRAKE CONTROL SYSTEM - ....92
Fail-Safe ..................................................................99
DTC No. Index ......................................................100
SYMPTOM DIAGNOSIS ............................102
VDC/TCS/ABS ................................................ ..102
Symptom Table ................................................... ..102
EXCESSIVE ABS FUNCTION OPERATION
FREQUENCY ...................................................
103
Diagnosis Procedure ........................................... ..103
UNEXPECTED PEDAL REACTION ...............104
Diagnosis Procedure .............................................104
THE BRAKING DISTANCE IS LONG .............105
Diagnosis Procedure .............................................105
ABS FUNCTION DOES NOT OPERATE .......106
Diagnosis Procedure .............................................106
PEDAL VIBRATION OR ABS OPERATION
SOUND OCCURS ...........................................
107
Diagnosis Procedure ........................................... ..107
VEHICLE JERKS DURING VDC/TCS/ABS
CONTROL .......................................................
108
Diagnosis Procedure .............................................108
NORMAL OPERATING CONDITION .............109
Description .............................................................109
PRECAUTION ............................................110
PRECAUTIONS ...............................................110
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
110
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
110
Precaution for Brake System .................................111
Precaution for Brake Control .................................111
Precaution for CAN System ...................................112
PREPARATION .........................................113
PREPARATION ...............................................113
Special Service Tool ............................................ ..113
Commercial Service Tool ......................................113
REMOVAL AND INSTALLATION .............114
WHEEL SENSORS .........................................114
Removal and Installation ..................................... ..114
SENSOR ROTOR ............................................115
Removal and Installation .......................................115
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ................................................................
116
Removal and Installation .......................................116
STEERING ANGLE SENSOR .........................118
Removal and Installation .......................................118
G SENSOR ......................................................119
Removal and Installation .......................................119
Revision: April 20092010 QX56
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![INFINITI QX56 2010 Factory User Guide VDC
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< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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FUNCTION DIAGNOSIS
VDC
System DiagramINFOID:0000000005147946
System DescriptionINFOID:0000000005147947
• Vehicle Dyn](/img/42/57032/w960_57032-502.png "INFINITI QX56 2010 Factory User Guide VDC
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FUNCTION DIAGNOSIS
VDC
System DiagramINFOID:0000000005147946
System DescriptionINFOID:0000000005147947
• Vehicle Dyn")
VDC
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FUNCTION DIAGNOSIS
VDC
System DiagramINFOID:0000000005147946
System DescriptionINFOID:0000000005147947
• Vehicle Dynamics Control system detects driver ′s steering operation amount and brake pedal travel from
steering angle sensor and pressure sensors. Using in formation from yaw rate/side/decel G sensor and
wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle
driving stability by controlling brake application to 4 wheels and engine output.
• During VDC operation, it informs driver of s ystem operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0065GB
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Component DescriptionINFOID:0000000005147949
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
1](/img/42/57032/w960_57032-504.png "INFINITI QX56 2010 Factory User Guide VDC
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< 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
1")
VDC
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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"
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![INFINITI QX56 2010 Factory User Guide BRC-14
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
TCS
System DiagramINFOID:0000000005147950
System DescriptionINFOID:0000000005147951
• Traction Control System is a function that electronically control](/img/42/57032/w960_57032-505.png "INFINITI QX56 2010 Factory User Guide BRC-14
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
TCS
System DiagramINFOID:0000000005147950
System DescriptionINFOID:0000000005147951
• Traction Control System is a function that electronically control")
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
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![INFINITI QX56 2010 Factory User Guide BRC-16
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
Component Description
INFOID:0000000005206965
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
10. Brake fluid level switch E21 11](/img/42/57032/w960_57032-507.png "INFINITI QX56 2010 Factory User Guide BRC-16
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
Component Description
INFOID:0000000005206965
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
10. Brake fluid level switch E21 11")
BRC-16
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
Component Description
INFOID:0000000005206965
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
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![INFINITI QX56 2010 Factory User Guide ABS
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Component DescriptionINFOID:0000000005147957
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
1](/img/42/57032/w960_57032-510.png "INFINITI QX56 2010 Factory User Guide ABS
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Component DescriptionINFOID:0000000005147957
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
1")
ABS
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Component DescriptionINFOID:0000000005147957
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"
Wheel sensor BRC-28, "Description"
ABS warning lampBRC-82, "Description"
Brake warning lampBRC-83, "Description"
Revision: April 20092010 QX56
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![INFINITI QX56 2010 Factory User Guide BRC-22
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
EBD
Component Description
INFOID:0000000005206968
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
10. Brake fluid level switch E21 11](/img/42/57032/w960_57032-513.png "INFINITI QX56 2010 Factory User Guide BRC-22
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
EBD
Component Description
INFOID:0000000005206968
7. VDC OFF switch M253 8. Active booster E499. Delta stroke sensor E114
10. Brake fluid level switch E21 11")
BRC-22
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
EBD
Component Description
INFOID:0000000005206968
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"
Wheel sensor BRC-28, "Description"
ABS warning lampBRC-82, "Description"
Brake warning lampBRC-83, "Description"
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UNIT)]
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UNIT)]
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTR")
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT-III Function (ABS)INFOID:0000000005147962
FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
SELF DIAGNOSTIC RESULT MODE
Operation Procedure
1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for
approximately 1 minute.
How to Erase Self-diagnosis Results
1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make sure t hat the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning lamp,
VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the
system is normal unless the vehicle is driving at approximately 30 km/h (19 MPH) or more for approxi-
mately 1 minute.
• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake fluid level switch operation (when brake fluid is insufficient).
• VDC OFF switch should not stay “ON” position.
Display Item List
Refer to BRC-100, "DTC No. Index".
DATA MONITOR MODE
Display Item List
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following
the indications on CONSULT-III.
Data Monitor Input/Output data in the ABS actuator and electric uni t (control unit) can be read.
Active Test Diagnostic test mode is which CONSULT-III driv
es some actuators apart from the ABS actuator
and electric unit (control unit) and also shifts some parameters in a specified range.
Self Diagnostic Result Self-diagnostic results can be read and erased quickly.
CAN diag support monitor The results of transmit/receive diagnosis of CAN communication can be read.
ECU Identification ABS actuator and electric unit (control unit) part number can be read.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
FR LH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by front LH
wheel sensor signal is displayed.
FR RH SENSOR
(km/h, mph) ×× ×
Wheel speed (km/h, mph) calculated by front RH
wheel sensor signal is displayed.
RR LH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by rear LH
wheel sensor signal is displayed.
RR RH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by rear RH
wheel sensor signal is displayed.
Revision: April 20092010 QX56