Breadcrumb Home Automotive AU 213 AU 213: Automatic Transmissions and Transaxles Download as PDF Program Automotive Semester Hours 4 Lab Hours 6 Lecture Hours 2 Studies operation, diagnosis, maintenance, and overhaul procedures of automatic transmissions and transaxles. Emphasis is placed on automatic transmission hydraulic systems, principles of torque multiplication, and electronic control. Prerequisites AU 128 and AU 132. Semester Spring