Serial Communication Interface (Sci)

This uses a integrated computer which contains both the ECM and the TCM within the same unit. We will refer to this unit as integrated ECM.

Fig 1: Serial Communication Interface (SCI) Diagram

Courtesy of HYUNDAI MOTOR CO.

Communication Speed: 15.625Kbit/sec

Frequency: 20ms

If a fault occurs in either ECM or TCM, the entire integrated ECM must be replaced.