System Description

SYSTEM DIAGRAM

Part name	Description
TCU	TCU
Telematics antenna	Telematics Switch
Microphone	Microphone
Telematics switch	Telematics Antenna
AV control unit	AV control unit sends and receives signals to and from the TCU, and sends and receives information necessary for the Mitsubishi Connect service.

TCU Output Signal (CAN Communication)

Receive unit	Signal name
ECM	Engine oil pressure warning light signal
	Engine status signal
	Malfunction indicator light signal
ABS actuator and electric unit (control unit)	ABS warning light signal
	Vehicle speed signal
	ASC warning light signal
	Brake warning light signal
TCM	Shift position signal
Combination meter	Odometer signal
Combination meter	Parking brake status signal
Airbag diagnosis sensor unit	Car crush information signal
BCM	Front wiper request signal
	Sleep wake up signal
	Door lock status signal

TCU Output Signal (CAN Communication)

Receive unit	Signal name
BCM	Sleep-ready signal
	Door lock/unlock signal
	Panic alarm request signal
	Engine start request signal

DESCRIPTION

MITSUBISHI CONNECT Services provide various services to support dealing with emergencies of the subscribed vehicle and the driver. For example, in case of an illness or serious injury, you can seek support by pushing the in-vehicle telematics switch (SOS button) and connecting to the MITSUBISHI CONNECT Customer Support Line.
The MITSUBISHI CONNECT Customer Support Line can specify the location of the vehicle via GPS, and the information will be sent to the police or other agencies as needed.
Telematics Communication Unit (TCU) equipped with a radio communication terminal communicates with the MITSUBISHI CONNECT Customer Support Line via radio waves for receiving MITSUBISHI CONNECT services.

With the equipment of the radio communication terminal, TCU communicates with MITSUBISHI CONNECT Customer Support Line by Packet communication^*1 and SMS^*2 via TEL antenna.

note

*1: Packet communication means a communication method that data is broken down into smaller chunks for communication. The split data is called a packet and improves the efficiency of the communication circuit.
*2: SMS stands for Short Message Service, also known as text messaging or short mail, and provides text-based message communication services.

While communicating with the operator, data (e.g. transmission of own vehicle location) is transmitted to the MITSUBISHI CONNECT Services Response Center by using DTMF tone signals and SMS via the radio communication module included in TCU.
Audio signals transmitted and received while communicating with the operator are input by microphone connected to TCU.
Audio signals are output from TCU via the audio data circuit connected to the AV control unit.

COMMUNICATION SIGNAL

TCU is connected to the AV control unit via USB communication, and it sends/receives reception data of TCU and operation signals of the AV control unit.
TCU is connected to each control unit via CAN communication, and it sends/receives vehicle information.