2007 TOYOTA SIENNA ECO mode

BC–78BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
9. SPEED SENSOR CHECK (WHEN USING SST CHECK
WIRE):
(a) Check the speed sensor 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.
(b) Stop the vehicle.
NOTICE:
• Before performing the speed sensor signal
check, complete the deceleration sensor and
master cylinder pressure sensor checks.
• The speed sensor signal check may not be
completed if the speed sensor signal check is
started while turning the steering wheel or
spinning the wheels.
• After the ABS warning light goes off, if
vehicle speed exceeds 80 km/h (50 mph), a
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 80 km/h (50 mph).
• If the signal check has not been completed,
the ABS warning light blinks while driving
and the ABS system does not operate.
HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the test mode pattern while stationary.
10. YAW RATE SENSOR CHECK (WHEN USING SST
CHECK WIRE):
(a) Check the zero point voltage of the yaw rate sensor.
(1) Keep the vehicle in a stationary condition on a
level surface for 1 second or more.
(b) 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 3 mph (5
km/h), and turn the steering wheel either to the
left or right 90
or more until the vehicle makes
180
turn.
(2) Stop the vehicle and move the shift lever to the
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.

BC–86BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC
FREEZE FRAME DATA
1. FREEZE FRAME DATA
(a) The vehicle (sensor) status, stored during ABS and/
or VSC operation or at the time of an error code
detection, can be displayed by the intelligent tester.
(b) Only one record of freeze frame data is stored and
the freeze frame data generated during ABS and/or
VSC operation are updated whenever the vehicle
status is changed. Also, the number of the ignition
switch is ON after the freeze frame data is stored
can be stored up to 31 and it can be displayed. After
storing the DTC, the freeze frame data is not up-
dated.
HINT:
If the ignition switch "ON" operation exceeds 31
times, "31"appears on the display.
(c) If a malfunction occurs, the freeze frame data is
stored but the ABS actuation data is deleted.
*
1: If no conditions are specifically stated for "Idling",
it means the shift lever is at N or P position, the A/C
switch is OFF and all accessory switches are OFF.
*
2: 2WD only
Tester Display Measurement Item
Reference Value*1
VEHICLE SPD Wheel speed sensor reading Speed indicated on speedometer
STOP LIGHT SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
# IG ONNumber of operations of ignition
switch ON after memorizing freeze
frame data0 to 31
MAS CYL PRESSMaster cylinder pressure sensor
readingBrake pedal release : 0.3 to 0.9 V
Brake pedal depress: 0.8 to 4.5 V
MASS PRESS GRADEMaster cylinder pressure sensor
change-30 to 200 MPa/s
SYSTEM System statusABS activated: ABS
VSC/TRC activated: VSC/TRC
BA activated: BA
Fail safe mode activated: FAIL SF
No system activated: NO SYS
YAW RATE Yaw rate angle sensor reading -100 to 100
STEERING ANG Steering sensor readingLeft turn: Increase
Right turn: Drop
THROTTLE Throttle position sensor readingRelease accelerator pedal: Approx. 0 deg.
Depress accelerator pedal: Approx. 90 deg.
G (RIGHT & LEFT) Right and left G -1.869 to 1.869
G (BACK & FORTH) Back and forth G -1.869 to 1.869
VSC (TRC) OFF SW*
2Traction OFF switch signalTRAC OFF SW ON: ON
OFF: OFF
SHIFT POSITION Shift lever positionFA I L
P,N
R
D
4
3
2
L

BC–88BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
BC*: 2WD
SRRR (SRR)ABS solenoid (SRRR (SRR)) /
ON or OFFON : Operate -
SRRH (SRH)ABS solenoid (SRRH (SRH)) /
ON or OFFON : Operate -
SRLRABS solenoid (SRLR) / ON or
OFFON : Operate -
SRLHABS solenoid (SRLH) / ON or
OFFON : Operate -
SMF (BA-SOL)TRAC solenoid (SMF) / ON or
OFFON : Operate -
SMRTRAC solenoid (SMR) / ON or
OFFON : Operate -
THROTTLEThrottle position sensor/ Min.: 0
deg, Max.: 125 degRelease accelerator pedal:
Approx. 0 deg.
Depress accelerator pedal:
Approx. 90 deg.-
ENGINE SPDEngine Speed/ Min.: 0 rpm, Max.:
6000 rpmActual engine speed -
VEHICLE SPD Maximum wheel speed sensor
reading / min.: 0 km/h (0 MPH),
max.: 326 km/h (202 MPH) Actual vehicle speed Speed indicated on speedometer
YAW RATEYaw rate sensor/ Min.: -128 deg/
s, Max.: 128 deg/sMin.: -128 deg/s
Max.: 128 deg/s-
YAW ZERO VALUEMemorized zero value/ Min.: -128
deg/s, Max.: 128 deg/sMin.: -128 deg/s
Max.: 128 deg/s-
STEERING ANGSteering sensor/ Min.: -1152 deg,
Max.: 1150.875 degLeft turn: Increase
Right turn: Decrease-
MAS CYL PRS 1Master cylinder pressure sensor
1 reading / min.: 0 V, max.: 5 VWhen brake pedal is released :
0.3 to 0.9 VReading increases when brake
pedal is depressed
AIR BLD SUPPORTAir bleed support / NOT SUP or
SUPPORTNot supported -
SPD SEN FRFR speed sensor open detection
/ OPN DET/NORMALNORMAL -
SPD SEN FLFL speed sensor open detection /
OPN DET/NORMALNORMAL -
SPD SEN RRRR speed sensor open detection
/ OPN DET/NORMALNORMAL -
SPD SEN RLRL speed sensor open detection /
OPN DET/NORMALNORMAL -
EFI COMEFI communication open
detection / OPN DET/NORMALNORMAL -
YAWRATE SENYaw rate sensor open detection /
OPN DET/NORMALNORMAL -
DECELE SENDeceleration sensor open
detection / OPN DET/NORMALNORMAL -
STEERING SENSteering sensor sensor open
detection / OPN DET/NORMAL
NORMAL -
TEST MODE Test mode / NORMAL or TESTNORMAL : Normal mode
TEST : During test mode-
#CODESNumber of DTC recorded / min.:
0, max.: 255Min.: 0
Max.: 255- Tester Display Measurement Item/Range Normal Condition Diagnostic Note

BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEMBC–101
BC
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine.
(c) Select the DATA LIST mode on the intelligent tester.
ABS / VSC:
(d) Check that there is no difference between the speed
value output from the speed sensor displayed by the
intelligent tester and the speed value displayed on the
speedometer when driving the vehicle.
OK:
There is almost no difference in the displayed
speed value.
HINT:
There is tolerance of +- 10 % in the speedometer
indication.
NG
OK
(a) INSPECTION USING OSCILLOSCOPE:
(1) Connect the oscilloscope to terminals RR+ - RR- or
RL+ - RL- of the skid control ECU.
(2) Drive the vehicle at approximately 19 mph (30 km/
h), and check the signal waveform.
OK:
A waveform as shown in a figure should be
output.
HINT:
• As vehicle speed (wheel revolution speed) in
creases, a cycle of the waveform narrows and
the fluctuation in the output voltage becomes
greater.
• hen noise is identified in the waveform on the
oscilloscope, error signals are generated due to
the speed sensor rotor's scratches, looseness or
foreign matter attached to it.
NOTICE:
When replacing the brake actuator assembly,
perform zero point calibration (See page BC-70).
NG
1READ VALUE ON INTELLIGENT TESTER (REAR SPEED SENSOR)
Tester Display Measurement Item/Range Normal Condition
WHEEL SPD RLWheel speed sensor (RL) reading / min.: 0
km/h (0 MPH, max.: 326 km/h (202 MPH)Actual wheel speed
WHEEL SPD RRWheel speed sensor (RR) reading / min.: 0
km/h (0 MPH, max.: 326 km/h (202 MPH)Actual wheel speed
Go to step 3
2CHECK SPEED SENSOR AND SENSOR ROTOR SERRATIONS
W004200E19
Go to step 6

BC–178BRAKE CONTROL – BRAKE ACTUATOR (w/ VSC)
BC
ON-VEHICLE INSPECTION
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
manual for further details.
2. INSPECT ACTUATOR MOTOR OPERATION
(a) With the motor relay on, check the actuator motor
operation noise.
(b) Turn the motor relay off.
(c) Depress the brake pedal and hold it for
approximately 15 seconds. Check that the brake
pedal cannot be depressed.
(d) With the motor relay on, check that the pedal does
not pulsate.
NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
seconds.
(e) Turn the motor relay off and release the brake
pedal.
3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTICE:
Never turn on the solenoids in a manner different to
those described below.
(a) With the brake pedal depressed, perform the
following operations.
(b) Turn the SFRH and SFRR solenoids on
simultaneously, and check that the pedal cannot be
depressed.
NOTICE:
Do not keep the solenoid turned on for more
than 10 seconds continuously. When operating
it continuously, set an interval of more than 20
seconds.
(c) Turn the SFRH and SFRR solenoids off
simultaneously, and check that the pedal can be
depressed.
(d) Turn the motor relay on, and check that the pedal
returns.
NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
seconds.
(e) Turn the motor relay off and release the brake
pedal.
A080036E03

BC–20BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
HINT:
• DTC No. C0200/31 and C1235/35 are for the front speed sensor RH.
• DTC No. C0205/32 and C1236/36 are for the front speed sensor LH.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.
(a) Select the DATA LIST mode on the intelligent tester.
ABS:
DTC No. DTC Detection Condition Trouble Area
C0200/31
C0205/32With vehicle speed at 10 km/h (6 mph) or more, sensor
signal circuit of faulty wheel is open or short for 1
second or more.
• Momentary interruption of sensor signal of faulty
wheel has occurred 7 times or more.
• Sensor signal circuit is open for 0.5 seconds or
more.• Front speed sensor RH/LH
• Front speed sensor RH/LH circuit
• Speed sensor rotor
• Sensor installation
• Brake actuator assembly
C1235/35
C1236/36At vehicle speed of 20 km/h (12 mph) or more,
condition that noise is included in speed sensor signal
continues for 5 seconds or more.• Front speed sensor RH/LH
• Speed sensor rotor
• Sensor installation
• Brake actuator assembly
1READ VALUE OF INTELLIGENT TESTER (FRONT SPEED SENSOR)
F040884E10
Item (Display)Measurement Item / Range
(Display)Normal Condition Diagnostic Note
WHEEL SPD FRWheel speed sensor (FR)
reading / min.: 0 km/h (0 mph),
max.: 326 km/h(202 mph)Actual wheel speedSimilar speed as indicated on
speedometer

BRAKE CONTROL – BRAKE ACTUATOR (w/o VSC)BC–183
BC
ON-VEHICLE INSPECTION
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
manual for further details.
2. INSPECT ACTUATOR MOTOR OPERATION
(a) With the motor relay on, check the actuator motor
operation noise.
(b) Turn the motor relay off.
(c) Depress the brake pedal and hold it for
approximately 15 seconds. Check that the brake
pedal cannot be depressed.
(d) With the motor relay on, check that the pedal does
not pulsate.
NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
seconds.
(e) Turn the motor relay off and release the brake
pedal.
3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTICE:
Never turn on the solenoids in a manner different to
those described below.
(a) With the brake pedal depressed, perform the
following operations.
(b) Turn the SFRH and SFRR solenoids on
simultaneously, and check that the pedal cannot be
depressed.
NOTICE:
Do not keep the solenoid turned on for more
than 10 seconds continuously. When operating
it continuously, set an interval of more than 20
seconds.
(c) Turn the SFRH and SFRR solenoids off
simultaneously, and check that the pedal can be
depressed.
(d) Turn the motor relay on, and check that the pedal
returns.
NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
seconds.
(e) Turn the motor relay off and release the brake
pedal.
A080036E03

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–25
BC
DESCRIPTION
Refer to DTCs C0200/31, C0205/32, C1235/35, and C1236/36 (See page BC-17).
DTCs C1273/73 to C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the
Test Mode ends. DTCs C1273/73 to C1278/78 are output only in the Test Mode.
HINT:
• DTC C0210/33 and C1238/38 are for the rear speed sensor RH.
• DTC C0215/34 and C1239/39 are for the rear speed sensor LH.
DTC C0210/33 Rear Speed Sensor RH Circuit
DTC C0215/34 Rear Speed Sensor LH Circuit
DTC C1238/38Foreign Object is Attached on Tip of Rear
Speed Sensor RH
DTC C1239/39Foreign Object is Attached on Tip of Rear
Speed Sensor LH
DTC C1273/73Low Output Signal of Rear Speed Sensor RH
(Test Mode DTC)
DTC C1274/74Low Output Signal of Rear Speed Sensor LH
(Test Mode DTC)
DTC C1277/77Abnormal Change in Output Signal of Rear
Speed Sensor RH (Test Mode DTC)
DTC C1278/78Abnormal Change in Output Signal of Rear
Speed Sensor LH (Test Mode DTC)
DTC No. DTC Detection Condition Trouble Area
C0210/33
C0215/34With vehicle speed at 10 km/h (6 mph) or more, sensor
signal circuit of faulty wheel is open or short for 1
second or more.
• Momentary interruption of sensor signal of faulty
wheel has occurred 7 times or more.
• Sensor signal circuit is open for 0.5 seconds or
more.• Rear speed sensor RH/LH
• Rear speed sensor RH/LH circuit
• Speed sensor rotor
• Sensor installation
• Brake actuator assembly
C1238/38
C1239/39At vehicle speed of 20 km/h (12 mph) or more, condition
that noise is included in speed sensor signal continues
for 5 seconds or more.• Rear speed sensor RH/LH
• Speed sensor rotor
• Sensor installation
• Brake actuator assembly