Basic Knowledge Required

DIFFICULT DIAGNOSIS
Without basic knowledge, it will be difficult to use the diagnostic procedures. It is important that you have a basic knowledge of the following items:

Basic Electrical Circuits - You should understand the basic theory of electricity and know the meaning of voltage, current (amps) and resistance (ohms). You should understand what happens in a circuit with an open or shorted wire. You should be able to read and understand a wiring diagram.

Circuit Testing Tools - You should be familiar with the J 39200 Digital Multimeter (DMM) and be familiar with the meter controls and how to use them correctly. You Should be able to measure voltage, resistance and current You should also know how to use jumper wires to bypass components to test circuits.

NOTE: When measuring the resistance to ground of a circuit or component, make sure to use a solid, unpainted chassis ground or the negative battery cable terminal.