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

SYSTEM DIAGRAM

(a) The CAN communication system is composed of 5 buses.

CAN Main Bus Line

Terminating Resistor

CAN Branch Line

*

Gateway Function Equipped ECU

Bus Monitoring Direction

-

-

Connected to

Code

ECU/Sensor Name

CAN DTC Storage

Note

-

CGW

Central Gateway ECU (Network Gateway ECU)

-

-

-

DLC3

DLC3

-

-

Bus 1

F-CAM

Forward Recognition Camera

Available

-

F-MR

Millimeter Wave Radar Sensor Assembly

-

-

GRS

Swing Grille Actuator Assembly

-

-

DS

Driving Support ECU Assembly

Available

-

BSM

Blind Spot Monitor Sensor RH

Available

-

R-CA

Television Camera Assembly

Available

-

CS

Clearance Warning ECU Assembly

Available

w/ Intelligent Clearance Sonar System

PAC

Parking Assist ECU

Available

w/ Panoramic View Monitor System

CAN J/C NO. 1

No. 1 CAN Junction Connector

-

-

CAN J/C NO. 7

No. 7 CAN Junction Connector

-

-

Bus 2

HV

Hybrid Vehicle Control ECU

Available

-

F-MGC

Inverter with Converter Assembly

Available

-

BRK

Brake Booster with Master Cylinder Assembly

Available

-

ENG

ECM

Available

-

CAN J/C NO. 2

No. 2 CAN Junction Connector

-

-

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

Bus 3

AV

Radio and Display Receiver Assembly

Available

-

DCM

DCM (Telematics Transceiver)

Available

-

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

Bus 4

TPMS

Tire Pressure Warning ECU and Receiver

Available

-

OCS

Occupant Detection ECU

Available

-

BRK

Brake Booster with Master Cylinder Assembly

Available

-

PKB

Brake Actuator Assembly

Available

-

EPS

Rack and Pinion Power Steering Gear Assembly

Available

-

ENG

ECM

Available

-

HV

Hybrid Vehicle Control ECU

Available

-

STR

Steering Sensor

-

-

SRS

Airbag ECU Assembly

Available

-

CAN J/C NO. 2

No. 2 CAN Junction Connector

-

-

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

J/C NO. 1

No. 1 Junction Connector

-

-

Bus 5

LITS

Headlight ECU Sub-assembly RH

Available

w/ Cornering Light

MIR-R

Outer Mirror Control ECU Assembly RH

Available

w/ Seat Position Memory System

DST

Position Control ECU Assembly LH

-

w/ Seat Position Memory System

MIR-L

Outer Mirror Control ECU Assembly LH

Available

w/ Seat Position Memory System

A/C

Air Conditioning Amplifier Assembly

Available

-

MB

Main Body ECU (Multiplex Network Body ECU)

Available

Connected to LIN communication system

HUD

Meter Mirror Sub-assembly

Available

w/ Headup Display System

SMT

Certification ECU (Smart Key ECU Assembly)

Available

-

LITM

Headlight ECU Sub-assembly LH

Available

w/ Cornering Light

T&T

Multiplex Tilt and Telescopic ECU

Available

w/ Power Tilt and Power Telescopic System

MET

Combination Meter Assembly

Available

-

CAN J/C NO. 3

No. 3 CAN Junction Connector

-

-

CAN J/C NO. 6

No. 6 CAN Junction Connector

-

-

J/C NO. 2

No. 2 Junction Connector

-

-

J/C NO. 3

No. 3 Junction Connector

-

-

    System Description

    Terminals Of Ecu

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: HO2S Heater Control Bank 1 Sensor 1 Circuit Short to Battery (P003012,P003013,P005012,P005013,P101A9E,P103A9E)
    DESCRIPTION Refer to DTC P219519. Click here HINT: When any of these DTCs are stored, the ECM enters fail-safe mode. The ECM turns off the air fuel ratio sensor heater in fail-safe mode. Fail-safe mode continues until the engine switch is turned off. Although the DTC titles say oxygen sensor, these ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

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

    © 2025 Copyright www.tavalon.net
    0.0122