2008 INFINITI QX56 wheel

TCS
BRC-17
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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E
G H
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M A
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BRC
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O P
Component DescriptionINFOID:0000000001691094
10. Yaw rate/side/decel G sensor M108 11. Rear wheel sensor LH C11 Rear wheel sensor RH C1012. Steering angle sensor M17
13. VDC OFF switch M253 14. Stop lamp relay E12
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-38, "
Description"Motor
Actuator relayBRC-56, "
Description"
Solenoid valveBRC-48, "Description"
VDC switch-over valve
(CV1, CV2, SV1, SV2)BRC-70, "Description"
Wheel sensor
BRC-29, "Description"
Yaw rate/side/decel G sensorBRC-40, "Description"
Steering angle sensorBRC-61, "Description"
VDC OFF switchBRC-81, "Description"
ABS warning lampBRC-83, "Description"
Brake warning lampBRC-84, "Description"
VDC OFF indicator lampBRC-85, "Description"
SLIP indicator lampBRC-86, "Description"
Front pressure sensor
BRC-58, "Description"Rear pressure sensor
Active boosterBRC-73, "
Description"
Delta stroke sensorBRC-76, "Description"
Revision: March 2010 2008 QX56

BRC-18
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
ABS
ABS
System DiagramINFOID:0000000001686247
System DescriptionINFOID:0000000001686248
• Anti-Lock Braking System is a function that detects
wheel revolution while braking, electronically controls
braking force, and prevents wheel locking during s udden braking. It improves handling stability and maneu-
verability for avoiding obstacles.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0014GB
Revision: March 2010 2008 QX56

ABS
BRC-19
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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G H
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M A
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BRC
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Component Parts LocationINFOID:0000000001691095
1. Front wheel sensor LH E18 Front wheel sensor RH E117 2. Delta stroke sensor E114 3. Brake fluid level switch E21
4. Active booster E49 5. Front pressure sensor E31 6. Rear pressure sensor E32
7. ABS actuator and electric unit (con- trol unit) E125 8. Stop lamp switch E38
9. Combination meter M23, M24
AWFIA0713GB
Revision: March 2010 2008 QX56

BRC-20
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
ABS
Component Description
INFOID:0000000001686250
10. Yaw rate/side/decel G sensor M108 11. Rear wheel sensor LH C11 Rear wheel sensor RH C10 12. Steering angle sensor M17
13. VDC OFF switch M253 14. Stop lamp relay E12
Component parts Reference
ABS actuator and electric unit (control unit) Pump
BRC-38, "
Description"Motor
Actuator relayBRC-56, "
Description"
Solenoid valveBRC-48, "Description"
Wheel sensor BRC-29, "Description"
ABS warning lampBRC-83, "Description"
Brake warning lampBRC-84, "Description"
Revision: March 2010 2008 QX56

EBD
BRC-21
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
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G H
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BRC
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EBD
System DiagramINFOID:0000000001691096
System DescriptionINFOID:0000000001686252
• Electric Brake force Distribution is a following functi on. ABS actuator and electric unit (control unit) detects
subtle slippages between the front and rear wheels during braking. Then it electronically controls the rear
braking force (brake fluid pressure) to reduce rear wheel slippage. Accordingly, it improves vehicle stability.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0014GB
Revision: March 2010 2008 QX56

BRC-22
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
EBD
Component Parts Location
INFOID:0000000001691097
1. Front wheel sensor LH E18 Front wheel sensor RH E117 2. Delta stroke sensor E114
3. Brake fluid level switch E21
4. Active booster E49 5. Front pressure sensor E316. Rear pressure sensor E32
7. ABS actuator and el ectric unit (con-
trol unit) E125 8. Stop lamp switch E38
9. Combination meter M23, M24
AWFIA0713GB
Revision: March 2010 2008 QX56

EBD
BRC-23
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Component DescriptionINFOID:0000000001691098
10. Yaw rate/side/decel G sensor M108 11. Rear wheel sensor LH C11 Rear wheel sensor RH C1012. Steering angle sensor M17
13. VDC OFF switch M253 14. Stop lamp relay E12
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-38, "
Description"Motor
Actuator relayBRC-56, "
Description"
Solenoid valveBRC-48, "Description"
Wheel sensor BRC-29, "Description"
ABS warning lampBRC-83, "Description"
Brake warning lampBRC-84, "Description"
Revision: March 2010 2008 QX56

BRC-24
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT-III Function (ABS)INFOID:0000000001686255
FUNCTION
CONSULT-III can display each diagnostic item us ing the diagnostic test modes shown following.
SELF-DIAG RESULTS MODE
Operation Procedure
1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for
approximately 1 minute.
How to Erase Self-d iagnosis Results
1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately
1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, pe rform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning lamp,
VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the
system is normal unless the vehicle is driving at approximately 30 km/h (19 MPH) or more for approxi-
mately 1 minute.
• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake fluid level switch operation (when brake fluid is insufficient).
• VDC OFF switch should not stay “ON” position.
Display Item List
Refer to BRC-100, "DTC No. Index".
DATA MONITOR MODE
Display Item List
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following
the indications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the ABS actuator and electric unit (control unit) can be read.
Active test Diagnostic test mode is which CONSULT-III drives some actuators apart from the ABS actuator
and electric unit (control unit) and also shifts some parameters in a specified range.
ECU part number ABS actuator and electric unit (control unit) part number can be read.
CAN diagnostic support monitor The results of transmit/receive diagnosis of CAN communication can be read.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
GEAR ××× Gear position judged by transmis-
sion range switch signal is dis-
played.
FR RH SENSOR
(km/h, MPH) ××× Wheel speed calculated by front RH
wheel sensor signal is displayed.
FR LH SENSOR
(km/h, MPH) ××× Wheel speed calculated by front LH
wheel sensor signal is displayed.
RR RH SENSOR
(km/h, MPH) ×××
Wheel speed calculated by rear RH
wheel sensor signal is displayed.
Revision: March 2010
2008 QX56