50 Auto Brakes Copyright by Goodheart-Willcox Co., Inc. 14. _____ are pictorial diagrams that show the path of energy through a system. (A) Schematics (B) Troubleshooting charts (C) Flowcharts (D) None of the above. 15. A specialized service manual covers which of the following? (A) Everything about one vehicle. (B) General information about many kinds of vehicles. (C) Specifi c information about one vehicle system. (D) Both A and B.