2010 INFINITI QX56 Factory Service Manual

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Page 497 of 4210

INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-5
< BASIC INSPECTION > [VDC/TCS/ABS]
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OVERALL SEQUENCE
DETAIED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed infor

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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

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INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWBRC-7
< BASIC INSPECTION > [VDC/TCS/ABS]
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Diagnostic Work SheetINFOID:0000000005147939
SFIA3265E
Revision: April 20092010 QX56

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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]
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>> GO TO 2
2.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
1. On the CONSUL

INSPECTION AND ADJUSTMENTBRC-9
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>> 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 502 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-10
< BASIC INSPECTION >[VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
(Calibration cannot be
done without CONSULT-III)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead positio

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INFINITI QX56 2010 Factory Service Manual VDC
BRC-11
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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FUNCTION DIAGNOSIS
VDC
System DiagramINFOID:0000000005147946
System DescriptionINFOID:0000000005147947
• Vehicle Dyn

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INFINITI QX56 2010 Factory Service Manual BRC-12
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
VDC
Component Parts Location
INFOID:0000000005147948
1. Front wheel sensor LH E18 Front wheel sensor RH E117 2. ABS actuator and electric unit (con-
trol uni

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