WARNING: This page is about a different car, the 2003 Hyundai Elantra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HECU Terminals (TCS)
Courtesy of HYUNDAI MOTOR CO.
Fig 2: TCS HECU Terminal Name & Specification Table (1 Of 2)
Courtesy of HYUNDAI MOTOR CO.
Fig 3: TCS HECU Terminal Name & Specification Table (2 Of 2)