brake sensor TOYOTA SIENNA 2007 Service Repair Manual

BRAKE CONTROL – REAR SPEED SENSOR (for 4WD)BC–193
BC
BRAKE
BRAKE CONTROL
REAR SPEED SENSOR (for 4WD)
COMPONENTS
C119321E12

BC–194BRAKE CONTROL – REAR SPEED SENSOR (for 4WD)
BC
REMOVAL
HINT:
Remove the RH side by the same procedure as the LH side.
1. REMOVE REAR WHEEL
2. REMOVE QUARTER TRIM PANEL ASSEMBLY
FRONT LH
HINT:
Remove the LH side by the same procedure as the RH
side (See page IR-9).
3. REMOVE REAR SPEED SENSOR
(a) Disconnect the speed sensor connector, and pull
out the sensor wire harness with grommet.
(b) Remove the clamp bolt holding the sensor harness
from the body.
(c) Remove the bolt and speed sensor rear LH.
NOTICE:
Keep the tip of the speed sensor rear LH clean.
F040305
G024305
G023898

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–37
BC
(a) Install the ABS 2 fuse.
(b) Disconnect the skid control ECU connector.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Clear the DTCs (See page BC-10).
(b) Start the engine.
(c) Drive the vehicle at the speed of 6 km/h (4 mph) or more.
(d) Check that the same DTCs are recorded (See page BC-
10).
HINT:
• Reinstall the sensors, connectors, etc. and restore the
vehicle to its prior condition before rechecking for
DTCs.
• If a speed signal of 6 km/h (4 mph) or more is input to
the skid control ECU, with the ignition switch on and
the stop light switch off, the ECU performs self-
diagnosis of the motor and solenoid circuits.
Result
2INSPECT SKID CONTROL ECU (+BS TERMINAL VOLTAGE)
C058919E23
Tester Connection Condition Specified Condition
S3-2 (+BS) - Body
groundAlways 10 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR (+BS CIRCUIT)
3INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)
C058919E22
Tester Connection Specified Condition
S3-1 (GND1) - Body ground Below 1
S3-23 (GND2) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (GND CIRCUIT)
4RECONFIRM DTC
Condition Proceed to
DTCs (C0278/11 and C0279/12) are output A
DTCs (C0278/11 and C0279/12) are not output B

BC–196BRAKE CONTROL – YAW RATE AND DECELERATION SENSOR
BC
BRAKE
BRAKE CONTROL
YAW RATE AND DECELERATION SENSOR
COMPONENTS
C119321E13

BRAKE CONTROL – YAW RATE AND DECELERATION SENSORBC–197
BC
REMOVAL
HINT:
• Don't use the dropped or damaged yawrate sensor.
• Free from the foreign matters between yaerate sensor
bracket and body.
• Make sure the sensor direction.
1. REMOVE FRONT SEAT ASSEMBLY RH
HINT:
See page SE-40.
2. REMOVE FRONT DOOR SCUFF PLATE RH
3. REMOVE COWL SIDE TRIM BOARD RH
(a) Remove the nut and cowl side trim board plate RH.
4. REMOVE YAW RATE AND DECELERATION SENSOR
(a) Disconnect the yawrate sensor connector.
(b) Remove the 2 bolts and yawrate sensor.
G024259

BC–198BRAKE CONTROL – YAW RATE AND DECELERATION SENSOR
BC
INSTALLATION
1. INSTALL YAW RATE AND DECELERATION SENSOR
(a) Connect the yawrate sensor connector.
(b) Install the yawrate sensor with the 2 bolts.
Torque: 13 N*m (136 kgf*cm, 10 ft.*lbf)
2. INSTALL COWL SIDE TRIM BOARD RH
(a) Install the nut with the cowl side trim board plate
RH.
3. INSTALL FRONT DOOR SCUFF PLATE RH
4. INSTALL FRONT SEAT ASSEMBLY RH
HINT:
See page SE-45.
5. PERFORM YAW RATE AND DECELERATION
SENSOR ZERO POINT CALIBRATION
HINT:
See page BC-70.
6. CHECK ABS SPEED SENSOR SIGNAL
HINT:
See page BC-82.
F045357

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–41
BC
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to ON position.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Turn the ignition switch off.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance
NG
OK
(a) Clear the DTCs (See page BC-10).
(b) Check that the same DTC is recorded (See page BC-
10).
HINT:
Reinstall the sensors, connectors, etc. and restore the
vehicle to its prior condition before rechecking for DTCs.
Result
B
C
4INSPECT SKID CONTROL ECU (IG1 TERMINAL VOLTAGE)
C058919E24
Tester Connection Specified Condition
S3-3 (IG1) - Body ground 10 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IG1 CIRCUIT)
5INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)
C058919E22
Tester Connection Specified Condition
S3-1 (GND1) - Body ground Below 1
S3-23 (GND2) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (GND CIRCUIT)
6RECONFIRM DTC
Condition Proceed to
DTC (C1241/41) is outputA
DTC (C1241/41) is not output (When troubleshooting in
accordance with the DTC CHART)B
DTC (C1241/41) is not output (When troubleshooting in
accordance with the PROBLEM SYMPTOMS TABLE)C
END
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

BC–198BRAKE CONTROL – STEERING ANGLE SENSOR
BC
BRAKE
BRAKE CONTROL
STEERING ANGLE SENSOR
COMPONENTS
C119321E14

BRAKE CONTROL – STEERING ANGLE SENSORBC–199
BC
REMOVAL
1. PRECAUTION
HINT:
See page RS-1
2. SEPARATE BATTERY NEGATIVE TERMINAL
3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD
4. REMOVE HORN BUTTON ASSEMBLY (See page RS-
424)
5. REMOVE STEERING WHEEL ASSEMBLY (See page
SR-6)
6. REMOVE STEERING COLUMN COVER LWR (See
page RS-434)
7. REMOVE SPIRAL CABLE SUB-ASSEMBLY (See page
RS-434)
8. REMOVE STEERING ANGLE SENSOR
(a) Release the claw fittings and remove the steering
sensor from the spiral cable.
INSTALLATION
1. INSTALL STEERING ANGLE SENSOR
(a) Install the steering sensor onto the spiral cable.
2. PLACE FRONT WHEELS FACING STRAIGHT AHEAD
3. INSTALL SPIRAL CABLE SUB-ASSEMBLY (See page
RS-434)
4. INSTALL STEERING COLUMN COVER LWR (See
page RS-435)
5. CENTER SPIRAL CABLE (See page RS-435)
6. INSTALL STEERING WHEEL ASSEMBLY
7. INSPECT STEERING WHEEL CENTER POINT (See
page SR-11)
8. INSTALL HORN BUTTON ASSEMBLY (See page RS-
424)
9. INSPECT SRS WARNING LIGHT
HINT:
See page RS-1.
F045466
F045466