System Diagram

Fig 1: Vehicle Stability Control - System Diagram (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Vehicle Stability Control - System Diagram (2 Of 2)

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
Skid control ECU	Steering angle sensor	Steering angle sensor request signal Zero point operation value update signal Steering angle zero point operation value	CAN communication system
Steering angle sensor	Skid control ECU	Steering angle sensor signal +B open circuit signal Sensor malfunction signal Zero point memory (in steering angle sensor) valid/invalid signal	CAN communication system
Skid control ECU	Yaw rate and acceleration sensor	Yaw rate and acceleration request signal	CAN communication system
Yaw rate and acceleration sensor	Skid control ECU	Yaw rate and acceleration signal Yaw rate sensor and acceleration sensor (valid/invalid) signal Yaw rate sensor and acceleration sensor error signal Sensor type identification signal	CAN communication system
Skid control ECU	ECM	Wheel speed signal VSC data signal	CAN communication system
ECM	Skid control ECU	Throttle position signal Engine speed signal Intake air temperature signal Engine torque request signal Accelerator pedal position signal	CAN communication system
TCM*	Skid control ECU	Shift position signal Park/neutral position switch signal Gear position signal	CAN communication system
Main body ECU	Skid control ECU	Parking brake switch signal	CAN communication system
Skid control ECU	Combination meter	ABS warning light signal BRAKE warning light signal VSC OFF indicator light signal TRAC OFF indicator light signal Slip indicator light signal	CAN communication system