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

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Supplemental Restraint Systems / Occupant Classification System(for Hv Model) / System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU

(Transmitter)

Receiving ECU

Signal

Communication Method

Airbag ECU Assembly

Occupant Detection ECU

Crash detection signal
Acceleration signal

CAN

Skid Control ECU (Brake Booster with Master Cylinder Assembly)

Occupant Detection ECU

Vehicle speed signal

Occupant Detection ECU

Airbag ECU Assembly

Occupant classification system failure signal
Occupant classification system zero point error signal
Occupant state for front passenger signal
Buckle switch state of front passenger signal

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: ECM Power Source Circuit
DESCRIPTION When the power switch is turned to on (IG), the auxiliary battery voltage is applied to IGSW of the ECM. When the transistor in the MREL circuit operates, current flows from the auxiliary battery to ground through the drive circuit of the EFI-MAIN NO. 1 relay, thus operating the relay wh ...

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

System Description

Terminals Of Ecu

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Toyota Avalon (XX50) 2019-2022 Owners Manual

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