Group 43 MID 130 Transmission Control Unit, Fault Codes 17 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 1 (Continued) • The values of the input shaft speed calculated from the main shaft speed sensor (SESM) and the counter shaft speed sensor (SESC) differ more than 50 rpm • The values of the input shaft speed calculated from the main shaft speed sensor (SESM) and the vehicle speed received from the Vehicle ECU differ more than 30 rpm • The values of the input shaft speed calculated from the counter shaft speed sensor (SESC) and the vehicle speed received from the Vehicle ECU differ less than 30 rpm