Toyota Sienna Service Manual: Skid Control Buzzer Circuit
DESCRIPTION
The skid control buzzer sounds and SLIP indicator blinking during VSC operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SKID CONTROL BUZZER)
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine.
(c) Select the item "VSC / BR WARN BUZ" in the ACTIVE TEST and operate the skid control buzzer on the intelligent tester.
ABS / VSC: 
(d) Check that skid control buzzer sounds by operating with the intelligent tester.
OK: The skid control buzzer sounds in accordance with operation of the intelligent tester.
REPLACE BRAKE ACTUATOR ASSEMBLY
2 INSPECT SKID CONTROL BUZZER
(a) Disconnect the skid control buzzer connector.
(b) Apply battery negative voltage to terminal 1, and battery positive voltage to terminal 2 of the skid control buzzer connector, and check that the buzzer sounds.
OK: The skid control buzzer sound should be heard.
3 CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)
(a) Disconnect the skid control buzzer connector and the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70)
REPLACE BRAKE ACTUATOR ASSEMBLY
Slip Indicator Light does not Come ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and
multiplex communications.
The SLIP indicator blinks during VSC and/or TRAC operation.
When the system fails, ...
TC and CG Terminal Circuit
DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTC
by blinking the ABS
warning light and/or VSC warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTI ...
Other materials:
Removal
1. REMOVE CENTER REAR SEAT LAP TYPE BELT
ASSEMBLY (for 8-Passenger)
HINT:
Refer to the instructions for disassembly of the rear No. 1 seat assembly (for
center seat).
Remove the bolt and center seat lap type belt
assembly.
2. REMOVE CENTER REAR NO. 2 SEAT LAP BELT
ASSEMBLY WITH ...
No. 1 Clearance Warning Buzzer Circuit
DESCRIPTION
The clearance warning ECU receives the ultrasonic sensor signal to sound the
front warning buzzer.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FRONT BUZZER
Remove the clearance warning ECU with front buzzer.
Apply the battery voltage to the terminals 1 and 2 o ...
Automatic door locking and unlocking systems
The following functions can be set or cancelled: For instructions on
customizing, refer to
Function
Operation
Shift position linked door
locking function
Shifting the shift lever out of P locks all the
doors
Shift position linked door
unlocking function
...
