Telematics Control Unit (TCU): Difference between revisions

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== External Links ==
== External Links ==


* https://mynissanleaf.com/threads/reverse-engineering-telematics-unit.36889/
* [https://mynissanleaf.com/threads/reverse-engineering-telematics-unit.36889/ Reverse engineering Telematics Unit - My Nissan Leaf Forum]
* https://www.youtube.com/watch?v=5QBOmr_ZyLo&ab_channel=DEFCONConference
* [https://www.youtube.com/watch?v=5QBOmr_ZyLo&ab_channel=DEFCONConference DEF CON 25 - Mickey Shkatov, Jesse Michael, Oleksandr Bazhaniuk - Driving down the rabbit hole]

Revision as of 10:49, 28 March 2025

Introduction

The Telematics Control Unit (TCU) provides connectivity to the Nissan Leaf. It is a 2G, 3G, 4G or 5G modem, depending on the year and region, with additional functionality.

4G TCU from a 2nd-generation Nissan Leaf

Location and access

The TCU is located behind the glove box in both LHD and RHD models of all generations. Access is achieved by removing the glove box.

Connections

Connector Number Physical Description Purpose
M67 TH40FB-NH (40-pin connector) Power, Microphone, CANBUS
M173 USCAR30-MD-M (USB) USB connection to head unit
M174 FAKRA CODE H 4003 (Pink) GSM antenna
M175 3FA1ANCSJ-C02W0 (Blue) GPS antenna

External Links