relay INFINITI QX56 2008 Factory User Guide
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2008, Model line: QX56, Model: INFINITI QX56 2008Pages: 4083, PDF Size: 81.73 MB
Page 505 of 4083
![INFINITI QX56 2008 Factory User Guide BRC-38
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
DescriptionINFOID:0000000001686273
PUMP
The pump returns the brake fluid stored in t](/img/42/57030/w960_57030-504.png "INFINITI QX56 2008 Factory User Guide BRC-38
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
DescriptionINFOID:0000000001686273
PUMP
The pump returns the brake fluid stored in t")
BRC-38
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
DescriptionINFOID:0000000001686273
PUMP
The pump returns the brake fluid stored in the reservoi
r to the master cylinder by reducing the pressure.
MOTOR
The motor drives the pump according to the signals trans mitted by the ABS actuator and electric unit (control
unit).
DTC LogicINFOID:0000000001686274
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-38, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000001686275
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnect, looseness, and so on. If any malfunction is found, repair or
replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-24, "
CONSULT-III Function
(ABS)".
Is any item indicated on the self-diagnosis display?
YES >> GO TO 2
NO >> Poor connection of connector term inal. Repair or replace connector.
2.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
DTCDisplay item Malfunction detected condition Possible cause
C 1111 P U M P M O T O R During the actuator motor operating with ON, when the
actuator motor turns OFF, or when the control line for ac-
tuator motor relay is open.
• Harness or connector
• ABS actuator and electric unit
(control unit)
During the actuator motor operating with OFF, when the
actuator motor turns ON, or when the control line for relay
is shorted to ground.
Self-diagnosis results
PUMP MOTOR
Revision: March 2010 2008 QX56
Page 506 of 4083
![INFINITI QX56 2008 Factory User Guide C1111 ABS MOTOR, MOTOR RELAY SYSTEM
BRC-39
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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G H
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M A
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BRC
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1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control un](/img/42/57030/w960_57030-505.png "INFINITI QX56 2008 Factory User Guide C1111 ABS MOTOR, MOTOR RELAY SYSTEM
BRC-39
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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BRC
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1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control un")
C1111 ABS MOTOR, MOTOR RELAY SYSTEM
BRC-39
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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G H
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M A
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BRC
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1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connec- tor.
3. Check voltage between the ABS actuator and electric unit (con- trol unit) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS act uator and electric unit (control
unit) harness connector terminals and ground.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-116, "
Removal and Installation".
NO >> Repair or replace malfunctioning components.
Component InspectionINFOID:0000000001686276
1.CHECK ACTIVE TEST
1. On “ACTIVE TEST”, select “ABS MOTOR”.
2. Touch ON and OFF on screen. Make sure motor relay and actuator relay operates as shown in table below.
Is the inspection result normal?
YES >> Inspection End
NO >> Go to diagnosis procedure. Refer to BRC-38, "
Diagnosis Procedure".
Special Repair RequirementINFOID:0000000001691104
1.ADJUSTMENT OF STEERING ANGLE 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
ABS actuator and electric unit (control unit) —Volt a ge
Connector Terminal
E125 1Ground Battery voltage
AWFIA0017ZZ
ABS actuator and electric unit (control unit)
—Contin u it y
Connector Terminal
E125 16, 47GroundYes
AWFIA0016ZZ
Operation ONOFF
MOTOR RELAY ONOFF
ACTUATOR RLY ONON
Revision: March 2010 2008 QX56
Page 513 of 4083
![INFINITI QX56 2008 Factory User Guide BRC-46
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1116 STOP LAMP SWITCH
C1116 STOP LAMP SWITCH
DescriptionINFOID:0000000001686288
The stop lamp switch transmits the stop lamp switch
signal (ON/OFF) to the](/img/42/57030/w960_57030-512.png "INFINITI QX56 2008 Factory User Guide BRC-46
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1116 STOP LAMP SWITCH
C1116 STOP LAMP SWITCH
DescriptionINFOID:0000000001686288
The stop lamp switch transmits the stop lamp switch
signal (ON/OFF) to the")
BRC-46
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1116 STOP LAMP SWITCH
C1116 STOP LAMP SWITCH
DescriptionINFOID:0000000001686288
The stop lamp switch transmits the stop lamp switch
signal (ON/OFF) to the ABS actuator and electric unit
(control unit).
DTC LogicINFOID:0000000001686289
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-46, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000001686290
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (cont rol unit) connector E125 and stop lamp switch connec-
tor E38.
2. Check the terminals for deformati on, disconnection, looseness or damage.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace as necessary.
2.STOP LAMP SWITCH INSPECTION
Check the voltage between the ABS actuator and electric unit (con-
trol unit) harness connector E125 terminal 41 and body ground.
Is the inspection result normal?
YES >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-116, "
Removal and Installation".
NO >> GO TO 3
3.STOP LAMP RELAY CIRCUIT INSPECTION
DTC Display item Malfunction detected condition Possible cause
C1116 STOP LAMP SW When stop lamp switch circuit is open. • Harness or connector
• Stop lamp switch
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
STOP LAMP SW
Brake pedal depressed : Battery voltage (approx. 12V)
Brake pedal not depressed : Approx. 0V
AWFIA0019ZZ
Revision: March 2010 2008 QX56
Page 514 of 4083
![INFINITI QX56 2008 Factory User Guide C1116 STOP LAMP SWITCHBRC-47
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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1. Disconnect the stop lamp relay harness connector E12.
2. Check the continuity between the ABS ac](/img/42/57030/w960_57030-513.png "INFINITI QX56 2008 Factory User Guide C1116 STOP LAMP SWITCHBRC-47
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
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BRC
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1. Disconnect the stop lamp relay harness connector E12.
2. Check the continuity between the ABS ac")
C1116 STOP LAMP SWITCHBRC-47
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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M A
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BRC
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1. Disconnect the stop lamp relay harness connector E12.
2. Check the continuity between the ABS actuator and electric unit (control unit) harness connector E125 (B) terminal 41 and stop
lamp relay harness connector E12 (A) terminal 4.
Is the inspection result normal?
YES >> Refer to EXL-4, "Work Flow".
NO >> Repair or replace malfunctioning components.
Special Repair RequirementINFOID:0000000001691118
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
Continuity should exist.
AWFIA0020ZZ
Revision: March 2010
2008 QX56
Page 515 of 4083
![INFINITI QX56 2008 Factory User Guide BRC-48
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1120, C1122, C1124,
C1126 IN ABS SOL
C1120, C1122, C1124, C1126 IN ABS SOL
DescriptionINFOID:0000000001686292
The solenoid valve increases, holds or decre](/img/42/57030/w960_57030-514.png "INFINITI QX56 2008 Factory User Guide BRC-48
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1120, C1122, C1124,
C1126 IN ABS SOL
C1120, C1122, C1124, C1126 IN ABS SOL
DescriptionINFOID:0000000001686292
The solenoid valve increases, holds or decre")
BRC-48
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1120, C1122, C1124,
C1126 IN ABS SOL
C1120, C1122, C1124, C1126 IN ABS SOL
DescriptionINFOID:0000000001686292
The solenoid valve increases, holds or decreases the flui d pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000001686293
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-48, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000001686294
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, re\
pair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-24, "
CONSULT-III Function
(ABS)".
Is any item indicated on the self-diagnosis display?
YES >> GO TO 2
NO >> Poor connection of connector term inal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE A ND ACTUATOR RELAY POWER SUPPLY CIRCUIT
DTCDisplay item Malfunction detected condition Possible cause
C1120 FR LH IN ABS SOL When the control unit detects a malfunction in the front
LH inlet solenoid circuit.
• ABS actuator and electric unit (control unit)
C1122 FR RH IN ABS SOL
When the control unit detects a malfunction in the front
RH inlet solenoid circuit.
C1124 RR LH IN ABS SOL When the control unit detects a malfunction in the rear LH
inlet solenoid circuit.
C1126 RR RH IN ABS SOL When the control unit detects a malfunction in the rear
RH inlet solenoid circuit.
Self-diagnosis results
FR LH IN ABS SOL
FR RH IN ABS SOL RR LH IN ABS SOL
RR RH IN ABS SOL
Revision: March 2010 2008 QX56
Page 516 of 4083
![INFINITI QX56 2008 Factory User Guide C1120, C1122, C1124, C1126 IN ABS SOL
BRC-49
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
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G H
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J
K L
M A
B
BRC
N
O P
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control](/img/42/57030/w960_57030-515.png "INFINITI QX56 2008 Factory User Guide C1120, C1122, C1124, C1126 IN ABS SOL
BRC-49
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
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G H
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K L
M A
B
BRC
N
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1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control")
C1120, C1122, C1124, C1126 IN ABS SOL
BRC-49
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
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K L
M A
B
BRC
N
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1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connec- tor.
3. Check voltage between ABS actuator and electric unit (control unit) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VA LVE AND ACUATOR RELAY GROUND CIRCUIT
Check continuity between ABS act uator and electric unit (control
unit) harness connector terminals and ground.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-116, "
Removal and Installation".
NO >> Repair or replace malfunctioning components.
Component InspectionINFOID:0000000001686295
1.CHECK ACTIVE TEST
1. Select each test menu item on ”ACTIVE TEST“.
2. On the display, touch “UP”, “KEEP”, and “DOWN”, and check that the system operates as shown in the
table below.
*: ON for 1 to 2 seconds after the touch, and then OFF
Is the inspection result normal?
YES >> Inspection End
ABS actuator and electric unit (control unit) —Volt a ge
Connector Terminal
E125 32Ground Battery voltage
AWFIA0018ZZ
ABS actuator and electric unit (control unit)
—Contin u it y
Connector Terminal
E125 16, 47GroundYes
AWFIA0016ZZ
Operation ABS solenoid valve
ABS solenoid valve (ACT)
UP KEEP DOWN UP ACTUA-
TOR UP ACTUA-
TOR KEEP
FR RH SOL
FR RH ABS SOLE-
NOID (ACT) FR RH IN SOL
OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON* OFF OFF OFF
FR LH SOL
FR LH ABS SOLE-
NOID (ACT) FR LH IN SOL
OFF ON ON OFF OFF OFF
FR LH OUT SOL OFF OFF ON* OFF OFF OFF
RR RH SOL
RR RH ABS SOLE-
NOID (ACT) RR RH IN SOL
OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON* OFF OFF OFF
RR LH SOL
RR LH ABS SOLE-
NOID (ACT) RR LH IN SOL
OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
REAR SOL RR RH IN SOL
OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON* OFF OFF OFF
RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
Revision: March 2010 2008 QX56
Page 518 of 4083
![INFINITI QX56 2008 Factory User Guide C1121, C1123, C1125, C1127 OUT ABS SOL
BRC-51
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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M A
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BRC
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C1121, C1123, C1125, C1127 OUT ABS SOL
DescriptionINFOID:0000000001686297
The sole](/img/42/57030/w960_57030-517.png "INFINITI QX56 2008 Factory User Guide C1121, C1123, C1125, C1127 OUT ABS SOL
BRC-51
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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BRC
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C1121, C1123, C1125, C1127 OUT ABS SOL
DescriptionINFOID:0000000001686297
The sole")
C1121, C1123, C1125, C1127 OUT ABS SOL
BRC-51
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
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BRC
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C1121, C1123, C1125, C1127 OUT ABS SOL
DescriptionINFOID:0000000001686297
The solenoid valve increases, holds or decreases the flui d pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000001686298
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-51, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000001691150
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-24, "
CONSULT-III Function
(ABS)".
Is any item indicated on the self-diagnosis display?
YES >> GO TO 2
NO >> Poor connection of connector terminal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE A ND ACTUATOR RELAY POWER SUPPLY CIRCUIT
DTCDisplay item Malfunction detected condition Possible cause
C1121 FR LH OUT ABS SOL When the control unit detects a malfunction in the front
LH outlet solenoid circuit.
• ABS actuator and electric unit (control unit)
C1123 FR RH OUT ABS SOL
When the control unit detects a malfunction in the front
RH outlet solenoid circuit.
C1125 RR LH OUT ABS SOL When the control unit detects a malfunction in the rear LH
outlet solenoid circuit.
C1127 RR RH OUT ABS SOL When the control unit detects a malfunction in the rear
RH outlet solenoid circuit.
Self-diagnosis results
FR LH OUT ABS SOL
FR RH OUT ABS SOL RR LH OUT ABS SOL
RR RH OUT ABS SOL
Revision: March 2010 2008 QX56
Page 519 of 4083
![INFINITI QX56 2008 Factory User Guide BRC-52
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1121, C1123, C1125,
C1127 OUT ABS SOL
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor.
3. Check volt](/img/42/57030/w960_57030-518.png "INFINITI QX56 2008 Factory User Guide BRC-52
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1121, C1123, C1125,
C1127 OUT ABS SOL
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor.
3. Check volt")
BRC-52
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1121, C1123, C1125,
C1127 OUT ABS SOL
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor.
3. Check voltage between ABS actuator and electric unit (control unit) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VA LVE AND ACUATOR RELAY GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector terminals and ground.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-116, "
Removal and Installation".
NO >> Repair or replace malfunctioning components.
Component InspectionINFOID:0000000001691151
1.CHECK ACTIVE TEST
1. Select each test menu item on ”ACTIVE TEST“.
2. On the display, touch “UP”, “KEEP”, and “DOWN”, and check that the system operates as shown in the
table below.
*: ON for 1 to 2 seconds after the touch, and then OFF
Is the inspection result normal?
YES >> Inspection End
ABS actuator and electric unit (control unit) —Volt a g e
Connector Terminal
E125 32Ground Battery voltage
AWFIA0018ZZ
ABS actuator and electric unit (control unit)
—Continuity
Connector Terminal
E125 16, 47GroundYes
AWFIA0016ZZ
Operation ABS solenoid valve
ABS solenoid valve (ACT)
UP KEEP DOWN UP ACTUA-
TOR UP ACTUA-
TOR KEEP
FR RH SOL
FR RH ABS SOLE-
NOID (ACT) FR RH IN SOL
OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON* OFF OFF OFF
FR LH SOL
FR LH ABS SOLE-
NOID (ACT) FR LH IN SOL
OFF ON ON OFF OFF OFF
FR LH OUT SOL OFF OFF ON* OFF OFF OFF
RR RH SOL
RR RH ABS SOLE-
NOID (ACT) RR RH IN SOL
OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON* OFF OFF OFF
RR LH SOL
RR LH ABS SOLE-
NOID (ACT) RR LH IN SOL
OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
REAR SOL RR RH IN SOL
OFF ON ON OFF OFF OFF
RR RH OUT SOL OFF OFF ON* OFF OFF OFF
RR LH IN SOL OFF ON ON OFF OFF OFF
RR LH OUT SOL OFF OFF ON* OFF OFF OFF
Revision: March 2010 2008 QX56
Page 523 of 4083
![INFINITI QX56 2008 Factory User Guide BRC-56
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1140 ACTUATOR RLY
C1140 ACTUATOR RLY
DescriptionINFOID:0000000001686306
Activates or deactivates each solenoid valve according to the signals transmitted b](/img/42/57030/w960_57030-522.png "INFINITI QX56 2008 Factory User Guide BRC-56
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1140 ACTUATOR RLY
C1140 ACTUATOR RLY
DescriptionINFOID:0000000001686306
Activates or deactivates each solenoid valve according to the signals transmitted b")
BRC-56
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1140 ACTUATOR RLY
C1140 ACTUATOR RLY
DescriptionINFOID:0000000001686306
Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and
electric unit (control unit).
DTC LogicINFOID:0000000001686307
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to BRC-56, "Diagnosis Procedure".
NO >> Inspection End
Diagnosis ProcedureINFOID:0000000001691154
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, re\
pair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-24, "
CONSULT-III Function
(ABS)".
Is any item indicated on the self-diagnosis display?
YES >> GO TO 2
NO >> Poor connection of connector term inal. Repair or replace connector.
2.CHECK SOLENOID, VDC SWITCH-OVER VALVE A ND ACTUATOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and elec tric unit (control unit) connec-
tor.
3. Check voltage between ABS actuator and electric unit (control unit) harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VA LVE AND ACUATOR RELAY GROUND CIRCUIT
DTCDisplay item Malfunction detected condition Possible cause
C1140 ACTUATOR RLY ABS actuator relay or circuit malfunction. • Harness or connector
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
ACTUATOR RLY
ABS actuator and electric unit (control unit) —Volt a g e
Connector Terminal
E125 32Ground Battery voltage
AWFIA0018ZZ
Revision: March 2010 2008 QX56
Page 524 of 4083
![INFINITI QX56 2008 Factory User Guide C1140 ACTUATOR RLYBRC-57
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
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G H
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M A
B
BRC
N
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Check continuity between ABS act uator and electric unit (control
unit) harness connector terminals and](/img/42/57030/w960_57030-523.png "INFINITI QX56 2008 Factory User Guide C1140 ACTUATOR RLYBRC-57
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Check continuity between ABS act uator and electric unit (control
unit) harness connector terminals and")
C1140 ACTUATOR RLYBRC-57
< COMPONENT DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Check continuity between ABS act uator and electric unit (control
unit) harness connector terminals and ground.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-116, "
Removal and Installation".
NO >> Repair or replace malfunctioning components.
Component InspectionINFOID:0000000001686309
1.CHECK ACTIVE TEST
1. On “ACTIVE TEST”, select “ABS MOTOR”.
2. Touch ON and OFF on screen. Make sure motor relay and actuator relay operates as shown in table below.
Is the inspection result normal?
YES >> Inspection End
NO >> Go to diagnosis procedure. Refer to BRC-56, "
Diagnosis Procedure".
Special Repair RequirementINFOID:0000000001691155
1.ADJUSTMENT OF STEERING ANGLE 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".
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ABS actuator and electric unit (control unit) —Contin u it y
Connector Terminal
E125 16, 47GroundYes
AWFIA0016ZZ
Operation ONOFF
MOTOR RELAY ONOFF
ACTUATOR RLY ONON
Revision: March 2010 2008 QX56