System Diagram

Fig 1: Electronically Controlled Brake System Diagram (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Electronically Controlled Brake System Diagram (2 Of 2)

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
Skid control ECU	Power steering ECU	Target steering angle signal Target relative angle signal	CAN communication system
Power steering ECU	Skid control ECU	Electronic power steering cooperative control enabling signal	CAN communication system
Main body ECU	Skid control ECU	Parking brake switch signal	CAN communication system
Skid control ECU	Power management control ECU	Wheel speed signal VSC data signal	CAN communication system
Power management control ECU	Skid control ECU	Shift lever position signal Throttle position signal Engine speed signal Intake air temperature signal Driving torque request signal Accelerator pedal position signal	CAN communication system
Skid control ECU	Steering angle sensor	Steering angle sensor request signal	CAN communication system
Steering angle sensor	Skid control ECU	Steering angle sensor 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	CAN communication system
Skid control ECU	Combination meter	ABS warning light signal Brake warning light / red (malfunction) signal Brake warning light / yellow (minor malfunction) signal Slip indicator light signal Meter buzzer signal	CAN communication system