BRC-5
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P Fail-Safe ................................................................
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DTC No. Index ......................................................169
SYMPTOM DIAGNOSIS ............................171
VDC/TCS/ABS ..................................................171
Symptom Table .....................................................171
EXCESSIVE ABS FUNCTION OPERATION
FREQUENCY ...................................................
172
Diagnosis Procedure .............................................172
UNEXPECTED PEDAL REACTION ................173
Diagnosis Procedure .............................................173
THE BRAKING DISTANCE IS LONG ..............174
Diagnosis Procedure .............................................174
ABS FUNCTION DOES NOT OPERATE .........175
Diagnosis Procedure .............................................175
PEDAL VIBRATION OR ABS OPERATION
SOUND OCCURS ............................................
176
Diagnosis Procedure .............................................176
VEHICLE JERKS DURING VDC/TCS/ABS
CONTROL ........................................................
177
Diagnosis Procedure .............................................177
NORMAL OPERATING CONDITION ...............178
Description ............................................................178
PRECAUTION ............................................179
PRECAUTIONS ...............................................179
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
179
Precaution for Brake System .................................179
Precaution for Brake Control .................................179
Diagnosis Precaution .............................................180
Precaution for Harness Repair ..............................180
PREPARATION .........................................181
PREPARATION ...............................................181
Special Service Tool ..............................................181
REMOVAL AND INSTALLATION .............182
WHEEL SENSORS .........................................182
Removal and Installation .......................................182
SENSOR ROTOR ............................................183
Removal and Installation .......................................183
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ................................................................
184
Removal and Installation .......................................184
YAW RATE/SIDE G SENSOR ........................185
Removal and Installation .......................................185
STEERING ANGLE SENSOR .........................186
Removal and Installation .......................................186
BRC-6
< BASIC INSPECTION >[ABS]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000001731351
PRECAUTIONS FOR DIAGNOSIS
If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit (con-
trol unit) or tires have been replaced, or if wheel alignment has been adjusted, be sure to adjust neutral posi-
tion of steering angle sensor before driving. Refer to BRC-90, "
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION : Description".
BRC-10
< BASIC INSPECTION >[ABS]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000001731353
After replacing the ABS actuator and electric unit (control unit), perform the following procedures:
Neutral position adjustment for the steering angle sensor
Calibration of the decel G sensor
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001731354
1.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
Perform the neutral position adjustment for the steering angle sensor.
>> Refer to BRC-90, "
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Spe-
cial Repair Requirement", GO TO 2
2.PERFORM CALIBRATION OF THE DECEL G SENSOR
Perform calibration of the decel G sensor.
>> Refer to BRC-92, "
CALIBRATION OF DECEL G SENSOR : Special Repair Requirement".
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description
INFOID:0000000001731355
Refer to the table below to determine if adjustment of steering angle sensor neutral position is required.
×: Required –: Not required
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Re-
pair Requirement
INFOID:0000000001731356
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-III
(Adjustment cannot be done without CONSULT-III)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
Situation Adjustment of steering angle sensor neutral position
Removing/Installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit)×
Removing/Installing steering angle sensor×
Replacing steering angle sensor×
Removing/Installing steering components×
Replacing steering components×
Removing/Installing suspension components×
Replacing suspension components×
Change tires to new ones—
Tire rotation—
Adjusting wheel alignment×
INSPECTION AND ADJUSTMENT
BRC-11
< BASIC INSPECTION >[ABS]
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>> GO TO 2
2.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT-III screen, touch “WORK SUPPORT” and “ST ANG SEN ADJUSTMENT” in order.
2. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle sensor.
3. After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
>> GO TO 3
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop.
2. Select “DATA MONITOR”. Then make sure “STR ANGLE SIG” is within 0±2.5°.
Is the steering angle within the specified range?
YES >> GO TO 4
NO >> Perform the neutral position adjustment for the steering angle sensor again, GO TO 1
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.
ABS actuator and electric unit (control unit): Refer to BRC-25, "
CONSULT-III Function (ABS)".
ECM, refer to:
-EC-107, "
CONSULT-III Function" (HR16DE with EURO-OBD)
-EC-462, "
CONSULT-III Function" (HR16DE without EURO-OBD)
-EC-772, "
CONSULT-III Function" (MR18DE)
-EC-1104, "
Diagnosis Description" (K9K)
Are the memories erased?
YES >> INSPECTION END
NO >> Check the items indicated by the self-diagnosis.
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR : DescriptionINFOID:0000000001731357
Refer to the table below to determine if calibration of the decel G sensor is required.
×: Required –: Not required
Situation Calibration of decel G sensor
Removing/Installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit)×
Removing/Installing steering angle sensor×
Replacing steering angle sensor×
Removing/Installing steering components×
Replacing steering components×
Removing/Installing suspension components×
Replacing suspension components×
Change tires to new ones—
Tire rotation—
Adjusting wheel alignment×
BRC-12
< BASIC INSPECTION >[ABS]
INSPECTION AND ADJUSTMENT
CALIBRATION OF DECEL G SENSOR : Special Repair Requirement
INFOID:0000000001731358
CALIBRATION OF DECEL G SENSOR
CAUTION:
To calibrate the decel G sensor, make sure to use CONSULT-III
(Calibration cannot be done without CONSULT-III)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2
2.PERFORM CALIBRATION OF DECEL G SENSOR
1. On the CONSULT-III screen, touch “WORK SUPPORT” and “DECEL G SEN CALIBRATION” in order.
2. Touch “START”.
3. After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
>> GO TO 3
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop.
2. Select “DATA MONITOR”. Then make sure “DECEL G SEN” is within ±.
Is the inspection result normal?
YES >> GO TO 4
NO >> Perform calibration of decel G sensor again, GO TO 1
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.
ABS actuator and electric unit (control unit): Refer to BRC-25, "
CONSULT-III Function (ABS)".
ECM, refer to:
-EC-107, "
CONSULT-III Function" (HR16DE with EURO-OBD)
-EC-462, "
CONSULT-III Function" (HR16DE without EURO-OBD)
-EC-772, "
CONSULT-III Function" (MR18DE)
-EC-1104, "
Diagnosis Description" (K9K)
Are the memories erased?
YES >> INSPECTION END
NO >> Check the items indicated by the self-diagnosis.
VDC
BRC-13
< FUNCTION DIAGNOSIS >[ABS]
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FUNCTION DIAGNOSIS
VDC
System DiagramINFOID:0000000001731208
System DescriptionINFOID:0000000001731209
Vehicle Dynamics Control system detects driver′s steering operation amount and brake pedal travel from
steering angle sensor and pressure sensors. Using information from yaw rate/side/decel G sensor and
wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle
driving stability by controlling brake application to 4 wheels and engine output.
During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.
Electrical system diagnosis by CONSULT-III is available.
AWFIA0012GB
VDC
BRC-15
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Component DescriptionINFOID:0000000001731211
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, "*****"
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