Air INFINITI QX56 2010 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2010, Model line: QX56, Model: INFINITI QX56 2010Pages: 4210, PDF Size: 81.91 MB
Page 493 of 4210
BRC-1
BRAKES
C
DE
G H
I
J
K L
M
SECTION BRC
A
B
BRC
N
O P
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
Revision: April 20092010 QX56
Page 494 of 4210
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
Page 495 of 4210
BRC-3
C
DE
G H
I
J
K L
M A
B
BRC
N
O P
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
Page 496 of 4210
![INFINITI QX56 2010 Factory Service Manual BRC-4
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005147938
PRECAUTIONS FOR DIAGNOSIS
If steering angle sensor](/img/42/57032/w960_57032-495.png "INFINITI QX56 2010 Factory Service Manual BRC-4
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005147938
PRECAUTIONS FOR DIAGNOSIS
If steering angle sensor")
BRC-4
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005147938
PRECAUTIONS FOR DIAGNOSIS
If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit (con-
trol unit) or tires have been replaced, or if wheel a
lignment has been adjusted, be sure to adjust neutral posi-
tion of steering angle sensor before driving. Refer to BRC-8, "
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION : Description".
Revision: April 20092010 QX56
Page 497 of 4210
![INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-5
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
OVERALL SEQUENCE
DETAIED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed infor](/img/42/57032/w960_57032-496.png "INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-5
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
OVERALL SEQUENCE
DETAIED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed infor")
DIAGNOSIS AND REPAIR WORKFLOWBRC-5
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
OVERALL SEQUENCE
DETAIED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) usi ng the diagnosis worksheet. Refer to BRC-7, "
Diagnostic Work Sheet".
>> GO TO 2
JSFIA0010GB
Revision: April 20092010 QX56
Page 498 of 4210
![INFINITI QX56 2010 Factory Service Manual BRC-6
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
2.PERFORM THE SELF-DIAGNOSIS
Check the DTC display with the self-diagnosis function. Refer to BRC-23, "
CONSULT-III Function (ABS](/img/42/57032/w960_57032-497.png "INFINITI QX56 2010 Factory Service Manual BRC-6
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
2.PERFORM THE SELF-DIAGNOSIS
Check the DTC display with the self-diagnosis function. Refer to BRC-23, \"
CONSULT-III Function (ABS")
BRC-6
< BASIC INSPECTION >[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
2.PERFORM THE SELF-DIAGNOSIS
Check the DTC display with the self-diagnosis function. Refer to BRC-23, "
CONSULT-III Function (ABS)".
Is there any DTC displayed?
YES >> GO TO 3
NO >> GO TO 4
3.PERFORM THE SYSTEM DIAGNOSIS
Perform the diagnosis applicable to the displayed DTC. Refer to BRC-100, "
DTC No. Index".
>> GO TO 7
4.CHECK THE SYMPTOM THAT IS NOT CONSIDERED A SYSTEM MALFUNCTION
Check that the symptom is a normal operation that is not considered a system malfunction. Refer to BRC-109,
"Description".
Is the symptom a normal operation?
YES >> Inspection End
NO >> GO TO 5
5.CHECK THE WARNING LAMP AND I NDICATOR LAMP FOR ILLUMINATION
Check that the warning lamp and indicator lamp illuminate.
• ABS warning lamp: Refer to BRC-82, "
Description".
• Brake warning lamp: Refer to BRC-83, "
Description".
• VDC OFF indicator lamp: Refer to BRC-84, "
Description".
• SLIP indicator lamp: Refer to BRC-86, "
Description".
Is ON/OFF timing normal?
YES >> GO TO 6
NO >> GO TO 2
6.PERFORM THE DIAGNOSIS BY SYMPTOM
Perform the diagnosis applicable to the symptom.
>> GO TO 7
7.REPAIR OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace the specified malfunctioning parts.
>> GO TO 8
8.FINAL CHECK
Perform the self-diagnosis again, and check that the malfunction is repaired completely. After checking, erase
the self-diagnosis memory. Refer to BRC-23, "
CONSULT-III Function (ABS)".
Is no other DTC present and the repair completed?
YES >> Inspection End
NO >> GO TO 3
Revision: April 20092010 QX56
Page 499 of 4210
![INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-7
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Diagnostic Work SheetINFOID:0000000005147939
SFIA3265E
Revision: April 20092010 QX56](/img/42/57032/w960_57032-498.png "INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-7
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Diagnostic Work SheetINFOID:0000000005147939
SFIA3265E
Revision: April 20092010 QX56")
DIAGNOSIS AND REPAIR WORKFLOWBRC-7
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Diagnostic Work SheetINFOID:0000000005147939
SFIA3265E
Revision: April 20092010 QX56
Page 500 of 4210
![INFINITI QX56 2010 Factory Service Manual BRC-8
< BASIC INSPECTION >[VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPL ACING CONTROL UNIT : Descriptio](/img/42/57032/w960_57032-499.png "INFINITI QX56 2010 Factory Service Manual BRC-8
< BASIC INSPECTION >[VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPL ACING CONTROL UNIT : Descriptio")
BRC-8
< BASIC INSPECTION >[VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN
REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPL ACING CONTROL UNIT : Description
INFOID:0000000005147940
After replacing the ABS actuator and electric unit (control unit), perform the following procedures:
• Neutral position adjustment for the steering angle sensor
• Calibration of the decel G sensor
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000005147941
1.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
Perform the neutral position adjustm ent for the steering angle sensor.
>> Refer to BRC-8, "
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Spe-
cial Repair Requirement", GO TO 2
2.PERFORM CALIBRATION OF THE DECEL G SENSOR
Perform calibration of the decel G sensor.
>> Refer to BRC-9, "
CALIBRATION OF DECEL G SENSOR : Special Repair Requirement".
ADJUSTMENT OF STEERING ANGL E SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description
INFOID:0000000005147942
Refer to the table below to determine if adjustment of steering angle sensor neutral position is required.
×: Required –: Not required
ADJUSTMENT OF STEERING ANGLE SENS OR NEUTRAL POSITION : Special Re-
pair Requirement
INFOID:0000000005147943
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION:
To adjust neutral position of steering angl e sensor, make sure to use CONSULT-III
(Adjustment cannot be done without CONSULT-III)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
Situation Adjustment of steering angle sensor neutral position
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 ×
Change tires to new ones —
Tire rotation —
Adjusting wheel alignment ×
Battery disconnection ×
Revision: April 20092010 QX56
Page 501 of 4210
![INFINITI QX56 2010 Factory Service Manual INSPECTION AND ADJUSTMENTBRC-9
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
>> GO TO 2
2.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
1. On the CONSUL](/img/42/57032/w960_57032-500.png "INFINITI QX56 2010 Factory Service Manual INSPECTION AND ADJUSTMENTBRC-9
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
>> GO TO 2
2.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
1. On the CONSUL")
INSPECTION AND ADJUSTMENTBRC-9
< BASIC INSPECTION > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
>> GO TO 2
2.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT-III screen, touch “WORK SUPP ORT” and “ST ANG SEN ADJUSTMENT” in order.
2. Touch “START”. CAUTION:
Do not touch steering wheel whil e adjusting steering angle sensor.
3. After approximately 10 seconds, touch “END”. NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again. CAUTION:
Be sure to perform above operation.
>> GO TO 3
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop.
2. Select “DATA MONITOR”. Then make sure “STR ANGLE SIG” is within 0 ±2.5 °.
Is the steering angle within the specified range?
YES >> GO TO 4
NO >> Perform the neutral position adjustment fo r the steering angle sensor again, GO TO 1
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS ac tuator and electric unit (control unit) and ECM.
• ABS actuator and electric unit (control unit): Refer to BRC-23, "
CONSULT-III Function (ABS)".
• ECM: Refer to EC-63, "
CONSULT-III Function (ENGINE)".
Are the memories erased?
YES >> Inspection End
NO >> Check the items indica ted by the self-diagnosis.
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR : DescriptionINFOID:0000000005147944
Refer to the table below to determine if calibration of the decel G sensor is required.
×: Required –: Not required
CALIBRATION OF DECEL G SENSOR : Special Repair RequirementINFOID:0000000005147945
CALIBRATION OF DECEL G SENSOR
CAUTION:
To calibrate the decel G sensor, make sure to use CONSULT-III
Situation Calibration of decel G sensor
Removing/Insta lling ABS actuator and electr ic unit (control unit) —
Replacing ABS actuator and elec tric 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 ×
Change tires to new ones —
Tire rotation —
Adjusting wheel alignment ×
Revision: April 20092010 QX56
Page 518 of 4210
![INFINITI QX56 2010 Factory Service Manual BRC-26
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
×: Applicable
–: Not applicable
ACTIVE TEST MODE
CAUTION:
• Do not perform active tes](/img/42/57032/w960_57032-517.png "INFINITI QX56 2010 Factory Service Manual BRC-26
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
×: Applicable
–: Not applicable
ACTIVE TEST MODE
CAUTION:
• Do not perform active tes")
BRC-26
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
×: Applicable
–: Not applicable
ACTIVE TEST MODE
CAUTION:
• Do not perform active test while driving vehicle.
• Make sure to completely bleed air from brake system.
• The active test cannot be performed with the ABS warning lamp, VDC OFF indicator lamp, SLIP indi-
cator lamp or brake warning lamp on.
• ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are on
during active test.
NOTE:
• When active test is performed while depressing the pedal, the pedal depression amount will change. This is
normal. (Only solenoid valve and ABS motor.)
• “TEST IS STOPPED” is displayed 10 seconds after operation start.
• After “TEST IS STOPPED” is display ed, to perform test again, touch BACK.
Test Item
SOLENOID VALVE• When performing an active test of the ABS function, select the “MAIN SIGNAL S” for each test item.
• For ABS solenoid valve, touch “Up”, “Keep”, and “D own” on the display screen. For ABS solenoid valve
(ACT), touch “Up”, “ACT UP”, “ACT KEEP” and confirm that solenoid valves operate as shown in the table
below.
RELEASE SW NC
(On/Off) ––
×Release switch signal (On/Off) status is displayed.
“Off” indicates that the brake pedal is depressed. “On”
indicates that the brake pedal is released.
OHB FAIL
(On/Off) ––
×OHB fail status is displayed.
HBA FAIL
(On/Off) ––
×HBA fail status is displayed.
OHB SIG
(On/Off) ––
×OHB operation (On/Off) status is displayed.
HBA SIG
(On/Off) ––
×HBA operation (On/Off) status is displayed.
STP OFF RLY
(On/Off) ––
×Stop lamp relay signal (On/Off) status is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Operation ABS solenoid valve ABS solenoid valve (ACT)
Up Keep Down Up ACT UP ACT KEEP
FR RH SOL FR RH IN SOL Off On On — —
—
FR RH OUT SOL Off Off On* — — —
FR LH SOL FR LH IN SOL Off On On — —
—
FR LH OUT SOL Off Off On* — — —
RR RH SOL RR RH IN SOL Off On On — —
—
RR RH OUT SOL Off Off On* — — —
RR LH SOL RR LH IN SOL Off On On — —
—
RR LH OUT SOL Off Off On* — — —
FR RH ABS SOLENOID (ACT) FR RH IN SOL — — — Off Off Off
FR RH OUT SOL — — — Off Off Off
CV1 ———OffOnOn
SV1
— — — Off On* Off
Revision: April 20092010 QX56