- Basic Knowledge and Tool Requirements

A general understanding of basic electrical circuits and circuit testing tools is required. One should be familiar with wiring diagrams, the meaning of voltage, ohms, amps, the basic theories of electricity, and understand what happens in an open or shorted wire.

To perform system diagnosis, the use of a diagnostic Scan tool is required. A tachometer, test light, ohmmeter, digital voltmeter with 10 megohms impedance, vacuum gauge, and jumper wires are also required. Please become acquainted with the tools and their use before attempting to diagnose a vehicle.

Many testing procedures refer to specific Saturn tools for testing. Refer to your Scan Tool manual to see if it is capable of similar tests. For further information on Saturn tools, refer to "Tools & Equipment". Tools and Equipment