2007 NISSAN TIIDA brake sensor

BRC-16
< FUNCTION DIAGNOSIS >[ABS]
TCS
TCS
System DiagramINFOID:0000000001731212
System DescriptionINFOID:0000000001731213
 Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
 During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.
 Electrical system diagnosis by CONSULT-III is available.
AWFIA0012GB

BRC-18
< FUNCTION DIAGNOSIS >[ABS]
TCS
Component Description
INFOID:0000000001731215
1. Front wheel sensor
LH E18
RH E1172. ABS actuator and electric unit (con-
trol unit) E1253. Combination meter M24
4. Rear wheel sensor
LH C11
RH C105. Yaw rate/side/decel G sensor M108 6. Steering angle sensor M17 (view
with steering wheel removed)
7. VDC OFF switch M257 8. Active booster E49 9. Delta stroke sensor E114
10. Brake fluid level switch E21 11. Front pressure sensor E31 12. Rear pressure sensor E32
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-39, "
Description"Motor
Actuator relayBRC-54, "
Description"
Solenoid valveBRC-46, "Description"
VDC switch-over valve
(CV1, CV2, SV1, SV2)XX-XX, "*****"
Wheel sensorBRC-30, "Description"
Yaw rate/side/decel G sensorXX-XX, "*****"
Steering angle sensorXX-XX, "*****"
VDC OFF switchXX-XX, "*****"
ABS warning lampBRC-60, "Description"
Brake warning lampBRC-61, "Description"
VDC OFF indicator lampXX-XX, "*****"
SLIP indicator lampXX-XX, "*****"
Front pressure sensor
XX-XX, "*****"
Rear pressure sensor
Active boosterXX-XX, "*****"
Delta stroke sensorXX-XX, "*****"

ABS
BRC-21
< FUNCTION DIAGNOSIS >[ABS]
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Component DescriptionINFOID:0000000001731219
1. Front wheel sensor
LH E18
RH E1172. ABS actuator and electric unit (con-
trol unit) E1253. Combination meter M24
4. Rear wheel sensor
LH C11
RH C105. Yaw rate/side/decel G sensor M108 6. Steering angle sensor M17 (view
with steering wheel removed)
7. VDC OFF switch M257 8. Active booster E49 9. Delta stroke sensor E114
10. Brake fluid level switch E21 11. Front pressure sensor E31 12. Rear pressure sensor E32
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-39, "
Description"Motor
Actuator relayBRC-54, "
Description"
Solenoid valveBRC-46, "Description"
Wheel sensorBRC-30, "Description"
ABS warning lampBRC-60, "Description"
Brake warning lampBRC-61, "Description"

BRC-24
< FUNCTION DIAGNOSIS >[ABS]
EBD
Component Description
INFOID:0000000001731223
1. Front wheel sensor
LH E18
RH E1172. ABS actuator and electric unit (con-
trol unit) E1253. Combination meter M24
4. Rear wheel sensor
LH C11
RH C105. Yaw rate/side/decel G sensor M108 6. Steering angle sensor M17 (view
with steering wheel removed)
7. VDC OFF switch M257 8. Active booster E49 9. Delta stroke sensor E114
10. Brake fluid level switch E21 11. Front pressure sensor E31 12. Rear pressure sensor E32
Component parts Reference
ABS actuator and electric unit (control unit)Pump
BRC-39, "
Description"Motor
Actuator relayBRC-54, "
Description"
Solenoid valveBRC-46, "Description"
Wheel sensorBRC-30, "Description"
ABS warning lampBRC-60, "Description"
Brake warning lampBRC-61, "Description"

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-25
< FUNCTION DIAGNOSIS >[ABS]
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT-III Function (ABS)INFOID:0000000001731224
FUNCTION
CONSULT-III can display each diagnostic item using 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-diagnosis 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, perform 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-71, "DTC No. Index".
DATA MONITOR MODE
Display Item List
Diagnostic test mode Function
Work supportThis 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 testDiagnostic 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
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
GEAR×××Gear position judged by PNP switch
signal is displayed.
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.

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-27
< FUNCTION DIAGNOSIS >[ABS]
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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) (ON/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 PNP switch
signal.
R POSI SIG – –×Shift position judged by PNP 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)
status is displayed.
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
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-29
< FUNCTION DIAGNOSIS >[ABS]
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*: ON for 1 to 2 seconds after the touch, and then OFF
ABS MOTOR Touch “ON” and “OFF” on screen. Make sure motor relay and actuator relay operates as shown in table
below.
BOOSTER DRIVE
 Touch “UP” and “DOWN” on the screen. Check that booster drive operates as shown in table below.
CAUTION:
Perform active test subject to the conditions below.
 Do not operate brake pedal during active test.
 Make sure the engine revolution is over 500 rpm.
 Make sure the vehicle is not moving.
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 SOLRR 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
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RLY ON ON
Operation UP DOWN
STOP LAMP SW ON OFF
BST OPER SIG ON OFF
PRESS SENSOR 50 ± 5 bar 0 bar
PRESS SEN 2 50 ± 5 bar 0 bar
STP OFF RLY OFF OFFOperationABS solenoid valve ABS solenoid valve (ACT)
UP KEEP DOWN UPACTUA-
TOR UPACTUA-
TOR KEEP

C1155 BRAKE FLUID LEVEL SWITCH
BRC-57
< COMPONENT DIAGNOSIS >[ABS]
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YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK BRAKE FLUID LEVEL SWITCH GROUND
Check continuity between brake fluid level switch harness connector
E21 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace malfunctioning components.
4.CHECK BRAKE FLUID LEVEL SWITCH
Check continuity between brake fluid level switch terminals.
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-85, "
Removal and
Installation".
NO >> Replace brake fluid level switch.
Component InspectionINFOID:0000000001731293
1.CHECK BRAKE FLUID LEVEL SWITCH
1. Turn ignition switch OFF.
2. Disconnect brake fluid level switch connector.
3. Check continuity between brake fluid level switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace brake fluid level switch.
Special Repair RequirementINFOID:0000000001731294
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to BRC-90, "
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Description".
Brake fluid level switch
—Continuity
Connector Terminal
E21 2 Ground Yes
AWFIA0026ZZ
Brake fluid level switch
Condition Continuity
Te r m i n a l
1 − 2When brake fluid is full in the reser-
voir tank.No
When brake fluid is empty in the
reservoir tank.Ye s
ALFIA0026ZZ
Brake fluid level switch
Condition Continuity
Te r m i n a l
1 − 2When brake fluid is full in the reser-
voir tank.No
When brake fluid is empty in the
reservoir tank.Ye s
ALFIA0026ZZ