System Diagram

Fig 1: CAN Communication System - System Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ECU/SENSOR NAME CHART

No.

ECU/Sensor Name

ECM

Network Gateway ECU

Main Body ECU (Cowl Side Junction Block LH)

DLC3

Air Conditioning Amplifier

Center Airbag Sensor

Display and Navigation Module Display⁽¹⁾ Multi-display⁽²⁾

AFS ECU (Headlight Swivel ECU)

Combination Meter

Certification ECU (Smart Key ECU)

Multiplex Tilt and Telescopic ECU

Outer Mirror Control ECU

Position Control ECU and Switch

Tire Pressure Warning ECU

No. 2 Main Body ECU

Power Back Door Unit (Back Door ECU)⁽³⁾

Bus Buffer ECU⁽⁴⁾

Windshield Wiper ECU

Master Cylinder Solenoid (Skid Control ECU)

Yaw Rate Sensor

Steering Angle Sensor

4WD Control ECU

Parking Assist ECU⁽⁵⁾

Seat Belt Control ECU⁽⁶⁾

Distance Control ECU⁽⁶⁾

Steering Control ECU

Suspension Control ECU

No. 1 CAN Junction Connector

⁽¹⁾	w/ Navigation System

⁽²⁾	w/o Navigation System

⁽³⁾	w/ Power Back Door System

⁽⁴⁾	w/ LEXUS Link System

⁽⁵⁾	w/ Wide View Front and Side Monitor System

⁽⁶⁾	w/ Dynamic Radar Cruise Control System

Fig 2: CAN Communication System - Communication Diagram (1 Of 4)

Fig 3: CAN Communication System - Communication Diagram (2 Of 4)

Fig 4: CAN Communication System - Communication Diagram (3 Of 4)

Fig 5: CAN Communication System - Communication Diagram (4 Of 4)

HINT:

The master cylinder solenoid (skid control ECU) stores steering sensor and yaw rate sensor DTCs and performs DTC communication by receiving information from the steering sensor and yaw rate sensor.
The ECM uses the CAN communication system to perform DTC communication instead of the conventional communication line (SIL).