AER 0691 - Electrical/Electronic Systems AER 0691 - Electrical/Electronic Systems 60 con. hrs. Occupational This course provides an in-depth understanding of modern automotive electrical systems, including battery, starter, and lighting circuits. Emphasis is placed on diagnosing complex systems such as CAN bus networks and high-voltage circuits in hybrid vehicles. You will learn to interpret wiring diagrams and perform system repairs using advanced diagnostic tools. Lab Fee: Yes Course Designations: (CH)