2007 TOYOTA SIENNA Service Repair Manual

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Page 2433 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–69
BC
HOW TO PROCEED WITH
TROUBLESHOOTING
The intelligent tester can be used at step 2, 5, 8, 11.
HINT:
See page BC-82 and BC-84.
HINT:
See pa

Page 2434 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–70BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
CALIBRATION
1. CLEAR ZERO POINT CALIBRATION (WHEN USING
INTELLIGENT TESTER):
(a) Connect the intelligent tester to the DLC3.
(b) Turn th

Page 2435 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–71
BC
2. PERFORM ZERO POINT CALIBRATION OF YAW
RATE AND DECELERATION SENSOR (WHEN USING
INTELLIGENT TESTER):
NOTICE:
• While obtaining the

Page 2436 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–72BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
3. PERFORM ZERO POINT CALIBRATION OF YAW
RATE AND DECELERATION SENSOR (WHEN USING
SST CHECK WIRE):
NOTICE:
• While obtaining the zer

Page 2437 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–73
BC
TEST MODE PROCEDURE
1. WARNING LIGHT AND INDICATOR LIGHT BULB
CHECK
(a) Check the warning lights.
(1) Release parking brake pedal.
(2) W

Page 2438 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–74BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
(b) Procedures for test mode.
(1) Turn the ignition switch off.
(2) Connect the intelligent tester to the DLC3.
(3) Check that the steeri

Page 2439 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–75
BC
4. SPEED SENSOR CHECK (WHEN USING
INTELLIGENT TESTER):
(a) Check the backward signal.
(1) Drive the vehicle in reverse for more than 1

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–75
BC
4. SPEED SENSOR CHECK (WHEN USING
INTELLIGENT TESTER):
(a) Check the backward signal.
(1) Drive the vehicle in reverse for more than 1
second at 3 km/h (2 mph) or higher.
HINT:
Drive the vehicle in reverse and check the speed
sensor signal. Note that the signal check cannot
be completed if the vehicle speed is 45 km/h (28
mph) or more.
(b) Check the forward signal.
(1) Drive the vehicle straight forward. Drive the
vehicle at a speed of 45 km/h (28 mph) or higher
for several seconds and check that the ABS
warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun or the steering
wheel turned during this check.
(c) Stop the vehicle.
5. YAW RATE SENSOR CHECK (WHEN USING
INTELLIGENT TESTER):
(a) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 5 km/h (3
mph), and turn the steering wheel either to the
left or right 90
or more until the vehicle makes a
180
turn.
(2) Stop the vehicle and move the shift lever to the P
position. Check that the skid control buzzer
sounds for 3 seconds.
HINT:
• If the skid control buzzer sounds, the signal
check is completed normally.
• If the skid control buzzer does not sound,
check the skid control buzzer circuit, then
perform the signal check again.
• If the skid control buzzer does not sound yet,
there is a malfunction in the VSC sensor, so
check the DTC.
• Make 180
turn. At the end of the turn, the
direction of the vehicle should be within 180

+- 5
of its start position.
• Do not spin the wheels.
6. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
ABS sensor:
BR03904E40
DTC Code Detection Item Trouble Area
C1271/71 Low output signal of front speed sensor RH• Front speed sensor RH
• Sensor installation
• Speed sensor rotor
C1272/72 Low output signal of front speed sensor LH• Front speed sensor LH
• Sensor installation
• Speed sensor rotor

Page 2440 of 3000

TOYOTA SIENNA 2007 Service Repair Manual BC–76BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
VSC sensor:
HINT:
The codes in this table are output only in Test Mode
(signal check).
7. SENSOR SIGNAL CHECK BY TEST MODE (SIGNAL
CHEC

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