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Home >> Toyota >> 2021 >> RAV4 LE, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Vacuum Brake Booster) - Diagnostics - Introduction (1 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster) >> System Diagram [08/2020 - 12/2021] >> System Diagram [08/2020 - 12/2021]

System Diagram [08/2020 - 12/2021]

Fig 1: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (1 of 7)
GTY881908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (2 of 7)
GTY905070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (3 of 7)
GTY843975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (4 of 7)
GTY875368Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (5 of 7)
GTY973134Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 6: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (6 of 7)
GTY1113953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 7: Electronically Controlled Brake System Diagram (W/O Vacuum Brake Booster) (7 of 7)
GTY936786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method
Main body ECU (Multiplex network body ECU) Skid control ECU (Brake booster with master cylinder assembly) Driver's side seat belt buckle switch signal CAN communication line
Skid control ECU (Brake booster with master cylinder assembly) Hybrid vehicle control ECU assembly
  • Wheel speed signal
  • Electronically controlled brake system data signal
 CAN communication line
Hybrid vehicle control ECU assembly Skid control ECU (Brake booster with master cylinder assembly)
  • Shift information signal
  • Ready status signal
  • Actual torque data signal
 CAN communication line
Skid control ECU (Brake booster with master cylinder assembly) Steering sensor Steering sensor request signal CAN communication line
Steering sensor Skid control ECU (Brake booster with master cylinder assembly) Steering sensor signal CAN communication line
Skid control ECU (Brake booster with master cylinder assembly) Yaw rate and acceleration sensor (Airbag ECU assembly) Yaw rate and acceleration request signal CAN communication line
Yaw rate and acceleration sensor (Airbag ECU assembly) Skid control ECU (Brake booster with master cylinder assembly) Yaw rate and acceleration signal CAN communication line
Skid control ECU (Brake booster with master cylinder assembly) Parking brake ECU assembly
  • Vehicle speed signal
  • Brake hold status signal
  • Electric parking brake lock request
 CAN communication line
Parking brake ECU assembly Skid control ECU (Brake booster with master cylinder assembly)
  • Electric parking brake switch status signal
  • Electric parking brake lock status signal
 CAN communication line
Skid control ECU (Brake booster with master cylinder assembly) Combination meter assembly
  • ABS warning light signal
  • Brake warning light / red (malfunction) signal
  • Brake warning light / yellow (minor malfunction) signal
  • Slip indicator light signal
  • VSC OFF indicator light signal
  • Multi-information display (TRC (TRAC) OFF and brake hold message) signal
  • Brake hold standby indicator light signal
  • Brake hold operated indicator light signal
  • Meter buzzer signal
 CAN communication line
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