System Description

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

LIN COMMUNICATION SYSTEM DESCRIPTION

The multiplex communication system (LIN) is used to control communication between the ECUs of the body system. If communication cannot be performed through the LIN because of an open in the communication lines or other reason, the master control ECU of the relevant system will output a DTC. For the communication system and the connected ECUs, refer to the table below.

HINT:

Each ECU has a fail safe function which activates to maintain the minimum performance of the system and protect the system.

LIN Communication Certification System

ECU	Master Control (LIN Communication DTC Output Function)
Certification ECU (Smart Key ECU Assembly)	◦ (with output function)
Main Body ECU (Instrument Panel Junction Block)	◦ (with output function)
Steering Lock ECU (Steering Lock Actuator Assembly)	x (no output function)
ID Code Box (Immobilizer Code ECU)	x (no output function)