Toyota Sienna Service Manual: Slip Indicator Light Remains 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, the SLIP indicator comes on to warn the driver.
WIRING DIAGRAM
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 IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
(a) Check if the skid control ECU connector is securely connected.
OK: The connector is securely connected.
4 CHECK BATTERY
(a) Check the battery voltage.
Standard voltage: 11 to 14 V
5 INSPECT COMBINATION METER ASSEMBLY
(a) Perform Active Test of the combination meter (meter CPU) using the intelligent tester (See page ME-19).
OK: The SLIP indicator 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
TRAC OFF Indicator Light does not Come ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and
multiplex communications.
When the traction OFF switch is turned on, the TRAC OFF indicator light will
come o ...
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, ...
Other materials:
Terminals of ECU
1. COMBINATION METER ASSEMBLY
*1: with Power Rear No. 2 Seat with Stowing Function
*2: with Theft Deterrent System
Waveform 1 (Reference) : Using an oscilloscope:
OK:
HINT:
As vehicle speed increases, the cycle of the signal
waveform narrows.
Wavefor ...
Disassembly
1. REMOVE FRONT SEAT SIDE TABLE LEG COVER (w/
Table)
Using a screwdriver, disengage the claws and
remove the seat side table leg cover.
HINT:
Tape the screwdriver tip before use.
2. REMOVE FRONT SEAT SIDE TABLE (w/ Table)
Remove the 4 nuts and seat side table.
Rem ...
Fail-safe chart
HINT:
If the following conditions are detected while the cruise
control is in operation, the system clears the stored vehicle
speed in the ECM and cancels the cruise control operation.
Vehicle Condition
Auto Cancel Condition
Re-operation Condition
CRUISE main in ...
