Toyota Sienna Service Manual: 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: 
VSC sensor:
HINT: The codes in this table are output only in Test Mode (signal check).
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 th ...
Sensor signal check by test mode (signal check) (when using sst check wire)
(a) When having replaced the skid control ECU and/or
yaw rate and deceleration sensor, perform zero
point calibration of the yaw rate and deceleration
sensor.
HINT:
If the ignition switch is t ...
Other materials:
Removal
1. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY
2. REMOVE FRONT OUTER COWL TOP PANEL SUBASSEMBLY
3. DRAIN ENGINE COOLANT
4. REMOVE V-BANK COVER SUB-ASSEMBLY
5. REMOVE NO. 2 AIR CLEANER INLET
6. REMOVE NO. 1 AIR CLEANER INLET
7. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
Disconnect the 3 vacuum hoses.
...
Customize parameters
1. Seat Belt Buzzer ON/OFF Setting
The seat belt buzzer ON/OFF setting, which is a setting
of the buzzer function of the combination meter, can
disable the driver side seat belt buzzer and front
passenger side seat belt buzzer.
NOTICE:
These buzzers should be on for safe driving.
Perform ...
Tire Pressure Warning Light Circuit
DESCRIPTION
If the ECU detects trouble, the tire pressure warning light blinks (comes on
after blinking for 1 minute) and
tire pressure monitor is cancelled at the same time. At this time, the ECU
records a DTC in the memory.
Connect terminals TC and CG of DLC3 to make the tire pressure war ...
