Basic Knowledge Required

To properly perform diagnosis there are some areas with which you must be familiar. Without this basic knowledge, you will have difficulty using the diagnostic procedures.
^ Basic Electrical Circuits:
- The basic theory of electricity is essential. An understanding of voltage, current and resistance and their relationships to each other will help in the diagnosis of an open or shorted circuit. You must be Able to read and understand a schematic wiring diagram.
^ Use of Circuit Testing Tools:
- You must know how to use jumper wires to bypass components to test circuits. You must be familiar with the Digital Multimeter (DMM. You must be Able to measure voltage, resistance, and current with an DMM.