2010 INFINITI QX56 Factory Service Manual

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Page 569 of 4210

INFINITI QX56 2010 Factory Service Manual C1185 ICC UNITBRC-77
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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C1185 ICC UNIT
DescriptionINFOID:0000000005148057
When the force applied to brake pedal exceeds a certain l

Page 570 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-78
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1185 ICC UNIT
1. Measure the continuity between ABS actuator and electric unit
(control unit) connector E125 terminal 7 and ICC unit connector
B13 terminal

Page 571 of 4210

INFINITI QX56 2010 Factory Service Manual U1000 CAN COMM CIRCUITBRC-79
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005148061
CAN (Controller Area Network) is a serial

Page 572 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-80
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
VDC OFF SWITCH
VDC OFF SWITCH
DescriptionINFOID:0000000005148065
VDC OFF switch can deactivate (turn OFF) the VDC/TCS function by pressi
ng the VDC OFF swit

Page 573 of 4210

INFINITI QX56 2010 Factory Service Manual VDC OFF SWITCHBRC-81
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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Check continuity between VDC OFF switch connector M253 terminal
2 and ground.
Is the inspection result norm

Page 574 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-82
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
ABS WARNING LAMP
ABS WARNING LAMP
DescriptionINFOID:0000000005148069
×
: ON –: OFF
Component Function CheckINFOID:0000000005148070
1.CHECK ABS WARNING LA

Page 575 of 4210

INFINITI QX56 2010 Factory Service Manual BRAKE WARNING LAMPBRC-83
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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BRAKE WARNING LAMP
DescriptionINFOID:0000000005148072
× : ON –: OFF
NOTE:
• 1: Brake warning lamp

BRAKE WARNING LAMPBRC-83
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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BRAKE WARNING LAMP
DescriptionINFOID:0000000005148072
× : ON –: OFF
NOTE:
• 1: Brake warning lamp will turn on in case of parking brake op eration (when switch is ON) or of brake fluid level switch operation
(when brake fluid is insufficient).
• 2: After starting engine, brake warning lamp is turned off.
Component Function CheckINFOID:0000000005148073
1.BRAKE WARNING LAMP OPERATION CHECK
Check that the lamp illuminates after the ignition switch is turned ON, and turns OFF after the engine is
started.
Is the inspection result normal?
YES >> Inspection End
NO >> Go to diagnosis procedure. Refer to BRC-83, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005148074
1.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-23, "
CONSULT-III Function
(ABS)".
Is the inspection result normal?
YES >> GO TO 2
NO >> Check items displayed by self-diagnosis.
2.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to MWI-22, "
Diagnosis Descrip-
tion".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-116, "Removal and Installa-
tion".
NO >> Replace combination meter. Refer to MWI-100, "
Removal and Installation".
Special Repair RequirementINFOID:0000000005194926
1.ADJUSTMENT OF STEERING AN GLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the st eering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to BRC-8, "
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Description".
>> GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
Refer to BRC-9, "
CALIBRATION OF DECEL G SENSOR : Description".
>> END
Condition Brake warning lamp (Note 1)
Ignition switch OFF –
Ignition switch ON × (Note 2)
EBD function is malfunctioning. ×
Revision: April 20092010 QX56

Page 576 of 4210

INFINITI QX56 2010 Factory Service Manual BRC-84
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
VDC OFF INDICATOR LAMP
VDC OFF INDICATOR LAMP
DescriptionINFOID:0000000005148075
×
: ON –: OFF
Component Function CheckINFOID:0000000005148076
1.VDC OFF

BRC-84
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
VDC OFF INDICATOR LAMP
VDC OFF INDICATOR LAMP
DescriptionINFOID:0000000005148075
×
: ON –: OFF
Component Function CheckINFOID:0000000005148076
1.VDC OFF INDICATOR LAMP OPERATION CHECK 1
Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?
YES >> GO TO 2
NO >> Go to diagnosis procedure. Refer to BRC-84, "
Diagnosis Procedure".
2.VDC OFF INDICATOR LAMP OPERATION CHECK 2
Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the
VDC OFF switch.
Is the inspection result normal?
YES >> Inspection End
NO >> Check VDC OFF switch. Refer to BRC-80, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005148077
1.CHECK VDC OFF SWITCH
Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the
VDC OFF switch.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check VDC OFF switch. Refer to BRC-80, "
Diagnosis Procedure".
2.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to BRC-23, "
CONSULT-III Function
(ABS)".
Is the inspection result normal?
YES >> GO TO 3
NO >> Check items displayed by self-diagnosis.
3.CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to MWI-22, "
Diagnosis Descrip-
tion".
Is the inspection result normal?
YES >> Replace ABS actuator and electr ic unit (control unit). Refer to BRC-116, "Removal and Installa-
tion".
NO >> Replace combination meter. Refer to MWI-100, "
Removal and Installation".
Condition VDC OFF indicator lamp
Ignition switch OFF –
For 2 seconds after turning ON ignition switch ×
2 seconds later after turning ON ignition switch –
VDC OFF switch turned ON. (VDC function is OFF.) ×
VDC/TCS function is malfunctioning. ×
ABS function is malfunctioning. ×
EBD function is malfunctioning. ×
Revision: April 20092010 QX56

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