Toyota Sienna Service Manual: VSC Warning Light does not Come ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and multiplex communications.
If the skid control ECU stores DTCs to shut down TRAC and VSC operation, the VSC warning light comes on in the combination meter.
WIRING DIAGRAM
Refer to VSC Warning Light Remains ON (See page BC-147).
INSPECTION PROCEDURE
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).
1 CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication system DTC is output (See page CA-17).
Result
2 CHECK MULTIPLEX COMMUNICATION SYSTEM
(a) Check if the multiplex communication system DTC is output (See page MP-14).
Result 
3 CHECK VSC WARNING LIGHT
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine.
(c) Select the Active Test mode on the intelligent tester (See page BC-85).
ABS / VSC: 
(d) Check that "ON" and "OFF" of the VSC warning light are indicated on the combination meter when using the intelligent tester.
OK: The VSC warning light turns on or off in accordance with the intelligent tester.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See page BC-79).
REPLACE BRAKE ACTUATOR ASSEMBLY
4 INSPECT COMBINATION METER ASSEMBLY
(a) Turn the ignition switch off.
(b) Check the combination meter (See page ME-4).
OK: The combination meter is normal.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See page BC-79).
REPLACE BRAKE ACTUATOR ASSEMBLY
VSC Warning Light Remains ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and
multiplex communications.
If the skid control ECU stores DTCs to shut down TRAC and VSC operation, the VSC
wa ...
Brake Warning Light Remains ON
DESCRIPTION
The BRAKE warning light comes on when the brake fluid is insufficient, the
parking brake is applied or the
EBD is defective.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
When rele ...
Other materials:
Precaution
1. PRECAUTION
(a) Before inspecting and repairing the fuel system,
disconnect the cable from the negative (-) battery
terminal.
(b) Do not smoke or work near fire when handling the
fuel system.
(c) Keep gasoline away from rubber or leather parts.
2. DISCHARGE FUEL SYSTEM PRESSURE (*1)
...
Closing the fuel tank cap
After refueling, turn the fuel tank
cap until you hear a click. Once
the cap is released, it will turn
slightly in the opposite direction.
WARNINGWhen replacing the fuel tank cap
Do not use anything but a genuine Toyota fuel tank cap designed for
your
vehicle. Doing so may c ...
Driver Side Seat Belt Warning Light does not Operate
DESCRIPTION
When turning the ignition switch to the ON position, the combination meter
assembly communicates with
the supplemental restraint system by the multiplex communication system. Unless
the driver side seat
belt is fastened, the combination meter assembly will turn on the seat belt
...
