INFINITI QX56 2011 Factory Service Manual

BRC-54
< WIRING DIAGRAM >[WITH VDC]
BRAKE CONTROL SYSTEM
JCFWM0628GB
Revision: 2010 May2011 QX56

BRAKE CONTROL SYSTEMBRC-55
< WIRING DIAGRAM > [WITH VDC]
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BRC
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JCFWM0629GB
Revision: 2010 May2011 QX56

BRC-56
< WIRING DIAGRAM >[WITH VDC]
BRAKE CONTROL SYSTEM
JCFWM0630GB
Revision: 2010 May2011 QX56

BRAKE CONTROL SYSTEMBRC-57
< WIRING DIAGRAM > [WITH VDC]
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BRC
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JCFWM0631GB
Revision: 2010 May2011 QX56

BRC-58
< WIRING DIAGRAM >[WITH VDC]
BRAKE CONTROL SYSTEM
JCFWM0632GB
Revision: 2010 May2011 QX56

BRAKE CONTROL SYSTEMBRC-59
< WIRING DIAGRAM > [WITH VDC]
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BRC
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JCFWM0633GB
Revision: 2010 May2011 QX56

BRC-60
< BASIC INSPECTION >[WITH VDC]
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work FlowINFOID:0000000006222585
DETAILED FLOW
1.INTERVIEW FROM THE CUSTOMER
Clarify customer complaints before inspection. First of all, perform an interview utilizing BRC-61, "
Diagnostic
Work Sheet" and reproduce the symptom as well as fully under stand it. Ask customer about his/her complaints
carefully.Check symptoms by driving vehicle with customer, if necessary.
CAUTION:
Customers are not professional. Never guess easily like “maybe the customer means that...,” or “
maybe the customer mentions this symptom”.
>> GO TO 2.
2.CHECK SYMPTOM
Reproduce the symptom that is indicated by the customer, based on the information from the customer
obtained by interview. Also check that the sympt om is not caused by fail-safe mode. Refer to BRC-47, "
Fail-
safe".
CAUTION:
When the symptom is caused by normal operation, fully inspect each portion and obtain the under-
standing of customer that the sympt om is not caused by a malfunction.
>> GO TO 3.
3.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III.
Perform self-diagnosis for “ABS”.
Is DTC detected?
YES >> Record or print self-diagnosis results. GO TO 4.
NO >> GO TO 6.
4.RECHECK THE SYMPTOM
With CONSULT-III.
1. Erase self-diagnostic results for “ABS”.
2. Perform DTC confirmation procedures for the error-detected system. NOTE:
If some DTCs are detected at the some time, det ermine the order for performing the diagnosis based on
BRC-50, "
DTC Inspection Priority Chart" [ABS actuator and electric unit (control unit)].
Is any DTC detected?
YES >> GO TO 5.
NO >> Check harness and connectors based on the information obtained by interview. Refer to GI-40,
"Intermittent Incident".
5.REPAIR OR REPLACE ERROR-DETECTED PART
 Repair or replace error-detected parts.
 Reconnect part or connector after repairing or replacing.
 When DTC is detected, erase self-diagnostic result for “ABS”.
>> GO TO 7.
6.IDENTIFY ERROR-DETECTED S YSTEM BY SYMPTOM DIAGNOSIS
Estimate error-detected system based on symptom diagnosis and perform inspection.
Can the error-detected system be identified?
Revision: 2010 May2011 QX56

DIAGNOSIS AND REPAIR WORK FLOWBRC-61
< BASIC INSPECTION > [WITH VDC]
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YES >> GO TO 7.
NO >> Check harness and connectors based on the in formation obtained by interview. Refer to GI-40,
"Intermittent Incident".
7.FINAL CHECK
With CONSULT-III.
1. Check the reference value for “ABS”.
2. Recheck the symptom and check that the sympt om is not reproduced on the same conditions.
Is the symptom reproduced?
YES >> GO TO 3.
NO >> INSPECTION END
Diagnostic Work SheetINFOID:0000000006222586
Description
 In general, customers have their own criteria for a pr oblem. Therefore, it is important to understand the
symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all
the information for the diagnosis, prepare the in terview sheet referring to the interview points.
 In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
INTERVIEW SHEET SAMPLE
Interview sheet
Customer
name MR/MSRegistration
number
Initial year
registration
Vehicle type VIN
Storage date Engine Mileage km ( Mile)
Symptom †
Does not operate ( ) function
† Warning lamp for ( \
) turns ON.
† Noise † Vibration
† Other
( )
First occurrence † Recently † Other ( )
Frequency of occurrence † Always † Under a certain conditions of † Sometimes ( time(s)/day)
Climate con-
ditions †
Irrelevant
Weather † Fine † Cloud † Rain †Snow † Others ( )
Temperature † Hot †Warm † Cool † Cold † Temperature [Approx. °C ( °F)]
Relative humidity † High † Moderate † Low
Road conditions †
Urban area † Suburb area † Highway
† Mountainous road (uphill or downhill) †Rough road
Operating condition, etc. †
Irrelevant
† When engine starts † During idling
† During driving † During acceleration † At constant speed driving
† During deceleration
† During cornering (right curve or left curve)
† When steering wheel is steered (to right or to left)
Revision: 2010 May2011 QX56

BRC-62
< BASIC INSPECTION >[WITH VDC]
DIAGNOSIS AND REPAIR WORK FLOW
Other conditions
MemoInterview sheet
Customer
name MR/MSRegistration
number
Initial year
registration
Vehicle type VIN
Storage date Engine Mileage km ( Mile)
Revision: 2010 May2011 QX56

ADDITIONAL SERVICE WHEN REPLACING ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-63
< BASIC INSPECTION > [WITH VDC]
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ADDITIONAL SERVICE WHEN REPL ACING ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT)
DescriptionINFOID:0000000006222587
When replaced the ABS actuator and electric unit (contro l unit), perform decel G sensor calibration. Refer to
BRC-66, "
Work Procedure".
Revision: 2010 May2011 QX56