A study of the various inputs, outputs, and models of operation common to most computer controlled systems. General diagnosis will be emphasized using multimeters, lab scopes, and scan tools. Students will be introduced to OBD II systems. This course will also assist technicians preparing for the State of California Smog License and the ASE L1 exams. AUTO 858 may be repeated once for credit; AUTO 758 may be repeated for credit a maximum of three times.