- Basic Knowledge and Tool Requirements

NOTICE: Lack of basic knowledge of this powertrain when performing diagnostic procedures could result in incorrect diagnostic performance or damage to powertrain components. Do not attempt to diagnose a powertrain problem without this basic knowledge.

Basic Electrical Circuit
You should have an understanding of basic electricity and know the meaning of voltage (volts), current (amps), and resistance (ohms). You should understand what happens in a circuit with an open or a shorted wire and you should be able to identify a shorted or open circuit by using a DVM. You should be able to read and understand a wiring diagram.

Use Of Digital Voltmeter
You should be familiar with the Digital Voltmeter (DVM), particularly the essential tool J 39200. You should be able to use the meter in order to measure the voltage (volts), the resistance (ohms), the current (amps), capacitance (farads), intermittents (min/max) and frequency (Hertz).

Use Of Circuit Testing Tools
You should not use a test light to diagnose the engine controls system unless you are specifically instructed to do so. You should know how to the use jumper wires in order to test the components and allow the DVM readings without damaging the terminals. You should know how to use the Connector Test Adapter kit, J 35616-A and use the kit whenever the diagnostic procedures call for front probing any connector.