Fig. 11: Identifying Traction Control - System Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1. Operation description
The skid control ECU detects the vehicle's slip condition by receiving signals from each
speed sensor and the ECM via CAN communication. The skid control ECU controls engine
torque with the ECM via CAN communication and brake fluid pressure through the pump
and solenoid valve. The SLIP indicator light blinks when the system is operating. The VSC
OFF indicator light blinks and the SLIP indicator light comes on when the TRAC system
malfunctions.
f. VSC (Vehicle Stability Control) (for 2WD vehicles or 4WD vehicles in 2WD mode)
The VSC system helps prevent the vehicle from slipping sideways when front or rear wheel
skidding occurs while cornering.
2009 Toyota Tundra
2009 BRAKES Brake Control - Tundra