Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: System Diagram

SYSTEM DIAGRAM

FRONT SEAT BELT WARNING

Communication Table

Sender	Receiver	Signal	Communication Method
Airbag ECU assembly	Main body ECU (multiplex network body ECU)	Front seat inner belt assembly LH buckle switch	CAN
Airbag ECU assembly	Combination meter assembly	Front seat inner belt assembly RH buckle switch Occupant detection
Skid control ECU (brake booster with master cylinder assembly)	Combination meter assembly	Vehicle speed
Hybrid vehicle control ECU assembly	Combination meter assembly	Shift position
Occupant detection ECU	Airbag ECU assembly	Front seat inner belt assembly RH buckle switch Occupant detection
Main body ECU (multiplex network body ECU)	Combination meter assembly	Front seat inner belt assembly LH buckle switch Parking brake switch

REAR SEAT BELT WARNING

Communication Table

Sender	Receiver	Signal	Communication Method
Main body ECU (multiplex network body ECU)	Combination meter assembly	Rear door courtesy light switch (LH/RH) Parking brake switch	CAN

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Electric Parking Brake System(for Hv Model): Brake System Malfunction (C13A9)
DESCRIPTION The parking brake ECU (brake actuator assembly) receives the wheel speed signal of each wheel from the skid control ECU (brake booster with master cylinder assembly) via CAN communication. This DTC is stored when a malfunction occurs in the skid control ECU (brake booster with master cyl ...

Toyota Avalon (XX50) 2019-2022 Owners Manual