U0101 INFINITI – Lost Communication With Transmission Control Module

U0101 INFINITI Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

U0101 INFINITI Possible Causes

Faulty Transmission Control Module (TCM),TCM harness is open or shorted,TCM circuit poor electrical connection,Poor harness ground connection

U0101 INFINITI Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.