Component Parts: TCU

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.

TCU is installed on the lower right side of the instrument panel.
*A radio communication terminal and SIM card are built into the unit and data is sent and received in SMS^*1 and packet communication^*2 with the NISSAN CARWINGS data center via the TEL antenna.
NOTE: *1: SMS stands for Short Message Service. It is also referred to as Text Messaging, Short Mail, etc. It is the service that performs text based message communication.
*2: Packet communication is the communication method that sends/receives data in a small pack. Divided data is referred to as a packet and the communication line can be efficiently used.

Fig 1: Identifying TCU
Courtesy of NISSAN MOTOR CO., U.S.A.
It is connected to the AV control unit with the USB harness for sound signal input/output and USB communication.
VIN information necessary for the Telematics service is memorized.