BRC-66
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Basic InspectionBFS000E7
BRAKE FLUID LEVEL, LEAKAGE AND BRAKE PAD
1. Check fluid level in the brake fluid reservoir tank. Refill the brake fluid if fluid level is low.
2. Check the area around the brake piping and actuator for leakage. If leakage or oozing is detected, check
as follows:
If ABS actuator and electric unit (control unit) connections are loose, tighten connections to the speci-
fied torque. Check again for leakage, and make sure that there is no fluid leakage.
If the flare nuts at the connections and the threads of the actuator are damaged, replace the damaged
parts. Then check again for leakage, and make sure that there is no fluid leak.
If leakage or oozing is detected on parts other than actuator connections, wipe with a clean cloth and
check again. If there is still leakage or oozing, replace the damaged part.
If leakage or oozing is detected on actuator body, wipe with a clean cloth and check again. If there is
still leakage or oozing, replace ABS actuator and electric unit (control unit).
CAUTION:
ABS actuator and electric unit (control unit) cannot be disassembled.
3. Check brake pad for wear. Refer to BR-26, "
PAD WEAR INSPECTION" , “FRONT DISC BRAKE”, BR-33,
"PAD WEAR INSPECTION" , “REAR DISC BRAKE”.
POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery for looseness on the battery positive/negative terminal and ground connection. Also make sure
that battery voltage does not drop.
INSPECTION OF ABS WARNING LAMP, BRAKE WARNING LAMP, VDC OFF INDICATOR LAMP,
AND SLIP INDICATOR LAMP
×: ON –: OFF
Note 1: Turns off after engine start
Note 2: The brake warning lamp turns on during parking brake operation (when switch is on) and brake fluid level sensor operation
(insufficient brake fluid).
1. Make sure that when the ignition switch is turned ON, the ABS warning lamp, VDC OFF indicator lamp
(when VDC OFF switch is off), and SLIP indicator lamp turn on for approximately 1 second, and that the
brake warning lamp turns on. If they do not turn on, perform CAN communication system diagnosis. Refer
to BRC-81, "
CAN Communication System" . Be sure to check VDC OFF switch before checking VDC OFF
indicator lamp. Refer to BRC-81, "
VDC OFF SWITCH" . Check combination meter if there is no malfunc-
tion in CAN communication system and VDC OFF switch. Refer to DI-4, "
COMBINATION METERS" .
2. Check if the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off approximately
1 second after the ignition switch is turned ON, and if the brake warning lamp turns off after the engine is
started. If they do not turn off, perform self-diagnosis.
ConditionABS warning
lampBrake warning
lamp (Note 2)VDC OFF indica-
tor lampSLIP indicator
lampRemarks
Ignition switch OFF ———— —
For a while after ignition
switch is turned ON×× (Note 1)××—
In a while after ignition
switch is turned ON
(System normal)—× (Note 1) — —Turns OFF 2 seconds
after ignition switch is
turned ON.
When the VDC OFF
switch is turned ON.
(VDC function OFF)——×——
VDC/TCS/ABS error×—××When there is an
ABS actuator and
electric unit (control
unit) error (power
ground or system
malfunction).
When VDC/TCS is not func-
tioning normally.——××—
EBD error××××—
TROUBLE DIAGNOSIS
BRC-67
[VDC/TCS/ABS]
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BRC
3. With the engine running, make sure that the VDC OFF indicator lamp turns on and off when the
VDC OFF switch turns ON and OFF. If it does not operate in accordance with the switch, check the
VDC OFF switch system. Refer to BRC-81, "
VDC OFF SWITCH" .
4. Perform self-diagnosis of ABS actuator and electric unit (control unit) if ABS warning lamp, VDC OFF indi-
cator lamp, and SLIP indicator lamp do not turn off 10 seconds after engine is started.
5. Always erase self-diagnostic results after completing self-diagnosis. Refer to BRC-58, "
ERASE MEM-
ORY" .
NOTE:
Brake warning lamp turns on during parking brake operation (when switch is ON) and brake fluid level
sensor operation (insufficient brake fluid).
BRC-68
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
TROUBLE DIAGNOSIS FOR SYSTEMPFP:00000
Wheel Sensor SystemBFS000E8
Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.
CAUTION:
Do not check between wheel sensor terminals.
INSPECTION PROCEDURE
1. CHECK TIRE
Check air pressure, wear and size.
Are air pressure, wear and size within the standards?
YES >> GO TO 2.
NO >> Adjust air pressure, or replace tire.
2. CHECK SENSOR AND SENSOR ROTOR
Check sensor and sensor rotor.
Check sensor rotor rubber for damage.
Check sensor for disconnection or looseness.
OK or NG
OK >> GO TO 3.
NG >> Repair sensor mount or replace sensor rotor.
3. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 4.
NO >> INSPECTION END
4. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and malfunctioning wheel sensor con-
nector. Check terminal for deformation, open circuit, pooh contact, etc., and repair or replace if any mal-
function is found.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then
perform self-diagnosis.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 5.
Self-diagnostic results
FR RH SENSOR-1, -2
FR LH SENSOR -1, -2
RR RH SENSOR-1, -2
RR LH SENSOR-1, -2
TROUBLE DIAGNOSIS FOR SYSTEM
BRC-69
[VDC/TCS/ABS]
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BRC
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E10 (FR-RH), E38 (FR-LH), C2 (RR-RH), C3
(RR-LH) and ABS actuator and electric unit (control unit) con-
nector E241.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA2098E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)
(Signal)ABS actuator
and electric unit
(control unit)
(Ground)
Front RH 26 1 27 2 26, 27
31, 46 Front LH 14 1 13 2 14, 13
Rear RH 12 1 11 2 11, 12
Rear LH 28 1 29 2 28, 29
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1—8 V or more Front LH
Rear RH
Rear LH
SFIA3339E
TROUBLE DIAGNOSIS FOR SYSTEM
BRC-71
[VDC/TCS/ABS]
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BRC
Steering Angle Sensor SystemBFS000EB
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector and steering
angle sensor connector, and check the terminal for deformation, disconnection, looseness, and so on.
Repair or replace the malfunctioning part if there are.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact was loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication system. Refer to BRC-81, "
CAN Communication System" .
2. Turn ignition switch OFF and disconnect steering angle sensor connector M26.
3. Check continuity between steering angle sensor harness con-
nector and ground.
4. Check voltage between steering angle sensor harness connec-
tor and ground.
OK or NG
OK >> GO TO 4.
NG >> Open or short in harness. Repair or replace harness.
Self-diagnostic results
ST ANGLE SIG CIRCUIT
Steering angle sensor Ground Continuity
2—Yes
SFIA1189E
Steering angle sensor Ground Voltage
3 — Battery voltage (Approx. 12 V)
SFIA1190E
BRC-72
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
4. CHECK DATA MONITOR
1. Connect ABS actuator and electric unit (control unit) connector and steering angle sensor.
2. Perform “ST ANGLE SIG” at “DATA MONITOR” to check if the status is normal.
OK or NG
OK >> Perform self-diagnosis again.
NG >> Replace steering angle sensor, and then adjust neutral position of steering angle sensor. Refer to
BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .
Yaw Rate/Side/Decel G Sensor SystemBFS000EC
CAUTION:
When the vehicle turns sharply, such as a spin turn, accel turn, or drift driving, while the VDC function
is OFF (VDC OFF indicator lamp turns on), a malfunction may occur in the yaw rate/side/decel G sen-
sor system, so in this case, restart the engine, and if it recovers normally, there is no malfunction.
Always erase memory after that. Refer to BRC-58, "
ERASE MEMORY" .
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector and yaw rate/
side/decel G sensor connector, and check the terminal for deformation, disconnection, looseness, and so
on. Repair or replace the malfunctioning part if there are.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact was loose, damaged, open or shorted.
NG >> GO TO 3.
Steering condition DATA MONITOR
Straight-ahead position−5° to +5°
Turn wheel to the right by 90°. Approx. +90°
Turn wheel to the left by 90°. Approx. −90°
Self-diagnostic results
YAW RATE SENSOR
SIDE G-SEN CIRCUIT
G-SENSOR
TROUBLE DIAGNOSIS FOR SYSTEM
BRC-73
[VDC/TCS/ABS]
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BRC
3. CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector E241 and yaw rate/side/decel G
sensor connector M66.
2. Check continuity between ABS actuator and electric unit (control
unit) connector and yaw rate/side/decel G sensor connector.
OK or NG
OK >> GO TO 4.
NG >> Open or short in harness. Repair or replace harness.
4. CHECK YAW RATE/SIDE/DECEL G SENSOR
1. Connect connectors of ABS actuator and electric unit (control unit) and yaw rate/side/decel G sensor.
2. Use “DATA MONITOR” to make sure that G sensor (yaw rate/side) operates normally.
Data Monitor Standard
OK or NG
OK >> INSPECTION END
NG >> Yaw rate/side/decel G sensor malfunction. Replace sensor, and after replacement, perform self-
diagnosis again.
SFIA2112E
ABS actuator and electric unit (control unit) Yaw rate/side/decel G sensor Continuity
19 1
Ye s 36 2
35 3
34 4
45
66
Vehicle status Yaw rate sensor Side G sensor Decel G sensor
When stopped−99 to +99 d/s
−1.1 to +1.1 m/s
2−0.21 to +0.21 G
Right turn Positive value Negative value —
Left turn Negative value Positive value —
During acceleration — — Positive value
During deceleration — — Negative value
TROUBLE DIAGNOSIS FOR SYSTEM
BRC-81
[VDC/TCS/ABS]
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BRC
CAN Communication SystemBFS000EI
Inspection Procedure
1. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and steer-
ing angle sensor connector. Check terminal for deformation, disconnection, looseness, and so on. If any
malfunction is found, repair or replace terminal.
2. Securely reconnect connectors and perform self-diagnosis.
Is above displayed in the self-diagnosis item?
YES >> Print out self-diagnostic results and go to LAN-49, "CAN System Specification Chart" .
NO >> Connector terminal connection is loose, damaged, open or shorted.
Component Parts InspectionBFS000EJ
VDC OFF SWITCH
Turn ignition switch OFF, and disconnect the VDC OFF switch
connector, and check continuity between terminals 1 and 2.
Self-diagnostic results
CAN COMM CIRCUIT
ST ANG SEN COM CIR
1 - 2 : Continuity should exist when pushing
switch.
Continuity should not exist when releasing
switch.
SFIA2519E