2008 INFINITI QX56 brake sensor

BRC-16
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
TCS
Component Parts Location
INFOID:0000000001691093
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

TCS
BRC-17
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
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

ABS
BRC-19
< FUNCTION DIAGNOSIS > [VDC/TCS/ABS]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
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

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

BRC-26
< FUNCTION DIAGNOSIS >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CV1
(ON/OFF) ––× Front side switch-over solenoid
valve (cut valve) (ON/OFF) status is
displayed.
CV2
(ON/OFF) ––× Rear side switch-over solenoid
valve (cut-valve) (O
N/OFF) status is
displayed.
SV1
(ON/OFF) ––× Front side switch-over solenoid
valve (suction valve) (ON/OFF) sta-
tus is displayed.
SV2
(ON/OFF) ––× Rear side switch-over solenoid
valve (suction valve) (ON/OFF) sta-
tus is displayed.
VDC FAIL SIG
(ON/OFF) ––× VDC fail signal (ON/OFF) status is
displayed.
TCS FAIL SIG
(ON/OFF) ––× TCS fail signal (ON/OFF) status is
displayed.
ABS FAIL SIG
(ON/OFF) ––×
ABS fail signal (ON/OFF) status is
displayed.
EBD FAIL SIG
(ON/OFF) ––× EBD fail signal (ON/OFF) status is
displayed.
FLUID LEV SW
(ON/OFF) ×
– ×Brake fluid level switch (ON/OFF)
status is displayed.
EBD SIGNAL
(ON/OFF) ––×
EBD operation (ON/OFF) status is
displayed.
ABS SIGNAL
(ON/OFF) ––× ABS operation (ON/OFF) status is
displayed.
TCS SIGNAL
(ON/OFF) ––× TCS operation (ON/OFF) status is
displayed.
VDC SIGNAL
(ON/OFF) ––×
VDC operation (ON/OFF) status is
displayed.
EBD WARN LAMP –– ×Brake warning lamp (ON/OFF) sta-
tus is displayed.
SLCT LVR POSI ××× Shift position judged by transmis-
sion range switch signal.
R POSI SIG ––×Shift position judged by transmis-
sion range switch signal.
2WD/4WD ––×It recognizes on software whether it
is 2WD and whether it is in 4WD
state.
BST OPER SIG ––×Active booster operation (ON/OFF)
st
atus is
di

splayed.
PRESS SENSOR ×– ×Brake pressure detected by pres-
sure sensor is displayed.
CRANKING SIG ––×The input state of the key SW
START position signal is displayed.
PRESS SEN 2 ––×Brake pressure detected by pres-
sure sensor is displayed.
DELTA S SEN ––×The amount of stroke sensor move-
ments in the active booster detected
by DELTA S SEN is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Revision: March 2010 2008 QX56