2007 NISSAN TIIDA brake

BRC-46
< COMPONENT DIAGNOSIS >[ABS]
C1120, C1122, C1124, C1126 IN ABS SOL
C1120, C1122, C1124, C1126 IN ABS SOL
DescriptionINFOID:0000000001731261
The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000001731262
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:0000000001731263
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-25, "
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 AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
DTC Display item Malfunction detected condition Possible cause
C1120 FR LH IN ABS SOLWhen 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 SOLWhen the control unit detects a malfunction in the front
RH inlet solenoid circuit.
C1124 RR LH IN ABS SOLWhen the control unit detects a malfunction in the rear LH
inlet solenoid circuit.
C1126 RR RH IN ABS SOLWhen 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

C1121, C1123, C1125, C1127 OUT ABS SOL
BRC-49
< COMPONENT DIAGNOSIS >[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
N
O
P
C1121, C1123, C1125, C1127 OUT ABS SOL
DescriptionINFOID:0000000001731266
The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).
DTC LogicINFOID:0000000001731267
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-49, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001731268
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-25, "
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 AND ACTUATOR RELAY POWER SUPPLY CIRCUIT
DTC Display item Malfunction detected condition Possible cause
C1121 FR LH OUT ABS SOLWhen 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 SOLWhen the control unit detects a malfunction in the front
RH outlet solenoid circuit.
C1125 RR LH OUT ABS SOLWhen the control unit detects a malfunction in the rear LH
outlet solenoid circuit.
C1127 RR RH OUT ABS SOLWhen 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

BRC-56
< COMPONENT DIAGNOSIS >[ABS]
C1155 BRAKE FLUID LEVEL SWITCH
C1155 BRAKE FLUID LEVEL SWITCH
DescriptionINFOID:0000000001731290
The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actu-
ator and electric unit (control unit).
DTC LogicINFOID:0000000001731291
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:0000000001731292
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector E125 and brake fluid level switch con-
nector E21.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace as necessary.
2.CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELECTRIC
UNIT (CONTROL UNIT)
1. Check continuity between ABS actuator and electric unit (control
unit) harness connector E125 (A) and brake fluid level switch
harness connector E21 (B).
2. Check continuity between ABS actuator and electric unit (control
unit) harness connector E125 (A) and ground.
Is the inspection result normal?
DTC Display item Malfunction detected condition Possible cause
C1155 BR FLUID LEVEL LOWBrake fluid level is low or communication line between
the ABS actuator and electric unit (control unit) and brake
fluid level switch is open or shorted. Harness or connector
 Brake fluid level switch
Brake fluid level
Self-diagnosis results
BR FLUID LEVEL LOW
ABS actuator and electric unit
(control unit)Brake fluid level switch
Continuity
Connector Terminal Connector Terminal
A: E125 8 B: E21 1 Yes
ABS actuator and electric unit (control unit)
— Continuity
Connector Terminal
A: E125 8 Ground No
AWFIA0025ZZ

C1155 BRAKE FLUID LEVEL SWITCH
BRC-57
< COMPONENT DIAGNOSIS >[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
N
O
P
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

BRC-58
< COMPONENT DIAGNOSIS >[ABS]
C1155 BRAKE FLUID LEVEL SWITCH
>> 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-91, "
CALIBRATION OF DECEL G SENSOR : Description".
>> END

BRAKE WARNING LAMP
BRC-61
< COMPONENT DIAGNOSIS >[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
N
O
P
BRAKE WARNING LAMP
DescriptionINFOID:0000000001731330
×: ON –: OFF
NOTE:
 1: 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).
 2: After starting engine, brake warning lamp is turned off.
Component Function CheckINFOID:0000000001731331
1.BRAKE WARNING LAMP OPERATION CHECK
Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to diagnosis procedure. Refer to BRC-61, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001731332
1.CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
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-21, "
Diagnosis Descrip-
tion".
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-85, "Removal and Installa-
tion".
NO >> Replace combination meter. Refer to MWI-94, "
Removal and Installation".
Condition Brake warning lamp (Note 1)
Ignition switch OFF–
For 1 second after turning ON ignition switch× (Note 2)
1 second later after turning ON ignition switch× (Note 2)
EBD function is malfunctioning.×

BRC-62
< ECU DIAGNOSIS >[ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
ECU DIAGNOSIS
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Reference ValueINFOID:0000000001731339
VALUES ON THE DIAGNOSIS TOOL
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short-circuited.
CONSULT-III MONITOR ITEM
Monitor item Display contentData monitor
ConditionReference value in
normal operation
FR LH SENSOR Wheel speed0 [km/h (MPH)] Vehicle stopped
Nearly matches the speed meter display
(± 10% or less)Vehicle running
(Note 1)
FR RH SENSOR Wheel speed0 [km/h (MPH)] Vehicle stopped
Nearly matches the speed meter display
(± 10% or less)Vehicle running
(Note 1)
RR LH SENSOR Wheel speed0 [km/h (MPH)] Vehicle stopped
Nearly matches the speed meter display
(± 10% or less)Vehicle running
(Note 1)
RR RH SENSOR Wheel speed0 [km/h (MPH)] Vehicle stopped
Nearly matches the speed meter display
(± 10% or less)Vehicle running
(Note 1)
STOP LAMP SW Stop lamp switch signal statusWhen brake pedal is depressed ON
When brake pedal is released OFF
BATTERY VOLTBattery voltage supplied to the ABS actuator
and electric unit (control unit)Ignition switch ON 10 – 16 V
GEAR Gear position determined by TCM1st gear
2nd gear
3rd gear
4th gear
5th gear1
2
3
4
5
SLCT LVR POSI A/T selector lever positionP position
R position
N position
D positionP
R
N
D
OFF SW VDC OFF switch ON/OFFVDC OFF switch ON
(When VDC OFF indicator lamp is ON)ON
VDC OFF switch OFF
(When VDC OFF indicator lamp is OFF)OFF
YAW R AT E S E NYaw rate detected by yaw rate/side/decel G
sensorWhen vehicle is stopped Approx. 0 d/s
When vehicle turning−75 to 75 d/s
ACCEL POS SIG Throttle actuator opening/closing is dis-
played (linked with accelerator pedal)Accelerator pedal not depressed (ignition
switch is ON)0 %
Accelerator pedal depressed (ignition
switch is ON)0 - 100 %

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-63
< ECU DIAGNOSIS >[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
N
O
P
SIDE G-SENSOR Transverse G detected by side G sensorVehicle stopped
Approx. 0 m/s
2
Vehicle turning rightNegative value
(m/s2)
Vehicle turning leftPositive value
(m/s
2)
STR ANGLE SIGSteering angle detected by steering angle
sensorStraight-ahead Approx. 0°
Steering wheel turned –720 to 720°
PRESS SENSORBrake fluid pressure detected by front pres-
sure sensorWith ignition switch turned ON and brake
pedal releasedApprox. 0 bar
With ignition switch turned ON and brake
pedal depressed–40 to 300 bar
ENGINE SPEED With engine runningWith engine stopped 0 rpm
Engine runningAlmost in accor-
dance with tachome-
ter display
FLUID LEV SW Brake fluid level switch signal statusWhen brake fluid level switch ON ON
When brake fluid level switch OFF OFF
FR RH IN SOL Operation status of each solenoid valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor relay is inactive (in fail-safe mode)ON
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF
FR RH OUT SOL Operation status of each solenoid valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor relay is inactive (in fail-safe mode)ON
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF
FR LH IN SOL Operation status of each solenoid valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor relay is inactive (in fail-safe mode)ON
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF
FR LH OUT SOL Operation status of each solenoid valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor relay is inactive (in fail-safe mode)ON
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF
RR RH IN SOL Operation status of each solenoid valve Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor relay is inactive (in fail-safe mode)ON
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON)OFF Monitor item Display contentData monitor
ConditionReference value in
normal operation