Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GMA2
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 03/2019]
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): SYSTEM DIAGRAM; 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 03/2019]

SYSTEM DIAGRAM

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

*A

w/ Blind Spot Monitor System

*B

w/o Blind Spot Monitor System

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

Available

-

BSM

Blind Spot Monitor Sensor LH

Available

w/ Blind Spot Monitor System

CAN J/C NO. 1

No. 1 CAN Junction Connector

-

-

J/C NO. 1

No. 1 Junction Connector

-

w/ Blind Spot Monitor System

ST

CAN Junction Terminal

-

w/ Blind Spot Monitor System

Bus 2

ENG

ECM

Available

-

TCM

Transmission Control ECU

Available

for CVT (K120)

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

Bus 3

AV

Radio and Display Receiver Assembly

Available

-

DCM

DCM (Telematics Transceiver)

Available

w/ Telematics Transceiver

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

Bus 4

EPS

Power Steering ECU with Motor Assembly

Available

-

BRK

Brake Actuator Assembly

Available

-

STR

Steering Sensor

-

-

SRS

Airbag Sensor Assembly

Available

-

OCS

Occupant Detection ECU

Available

-

CAN J/C NO. 5

No. 5 CAN Junction Connector

-

-

Bus 5

A/C

Air Conditioning Amplifier Assembly

Available

-

MB

Main Body ECU (Multiplex Network Body ECU)

Available

Connected to LIN communication system

SMT

Certification ECU (Smart Key ECU Assembly)

Available

-

HUD

Meter Mirror Sub-assembly

Available

w/ Headup Display System

MET

Combination Meter Assembly

Available

-

LITS

Headlight ECU Sub-assembly RH

Available

w/ AFS

LITM

Headlight ECU Sub-assembly LH

Available

w/ AFS

CAN J/C NO. 3

No. 3 CAN Junction Connector

-

-

(b) The CAN communication system is composed of 5 buses. (for Sedan)

*A

w/ Blind Spot Monitor System

*B

w/o Blind Spot Monitor System

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

Available

-

BSM

Blind Spot Monitor Sensor LH

Available

w/ Blind Spot Monitor System

CAN J/C NO. 1

No. 1 CAN Junction Connector

-

-

CAN J/C NO. 7

No. 7 CAN Junction Connector

-

w/ Blind Spot Monitor System

ST

CAN Junction Terminal

-

w/ Blind Spot Monitor System

Bus 2

ENG

ECM

Available

-

TCM

Transmission Control ECU

Available

for CVT (K120)

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

Bus 3

AV

Radio and Display Receiver Assembly

Available

-

DCM

DCM (Telematics Transceiver)

Available

w/ Telematics Transceiver

CAN J/C NO. 6

No. 6 CAN Junction Connector

-

-

Bus 4

EPS

Power Steering ECU with Motor Assembly

Available

-

BRK

Brake Actuator Assembly

Available

-

STR

Steering Sensor

-

-

SRS

Airbag Sensor Assembly

Available

-

OCS

Occupant Detection ECU

Available

-

CAN J/C NO. 4

No. 4 CAN Junction Connector

-

-

J/C NO. 1

No. 1 Junction Connector

-

-

Bus 5

A/C

Air Conditioning Amplifier Assembly

Available

-

MB

Main Body ECU (Multiplex Network Body ECU)

Available

Connected to LIN communication system

SMT

Certification ECU (Smart Key ECU Assembly)

Available

w/ Smart Key System

MET

Combination Meter Assembly

Available

-

LITS

Headlight ECU Sub-assembly RH

Available

w/ AFS

LITM

Headlight ECU Sub-assembly LH

Available

w/ AFS

CAN J/C NO. 3

No. 3 CAN Junction Connector

-

-