Introduction

INTRODUCTION
In general testing electrical circuits is an easy task if it is approached in a logical and organized method. Before beginning it is important to have all available information on the system to be tested. Also get a thorough understanding of system operation. Then you will be able to use the appropriate equipment and follow the correct test procedure.

OPEN: A circuit is Open when there is no continuity through a section of the circuit.

SHORT: There are two types of shorts.
SHORT CIRCUIT - When a circuit contacts another circuit and causes the normal resistance to change.
SHORT TO GROUND - When a circuit contacts a ground source and grounds the circuit.


You may have to simulate vehicle vibrations while testing electrical components. Gently shake the wiring harness or electrical component to do this.

NOTE: Refer to "HOW TO CHECK TERMINAL" to probe or check terminal.
How to Check Terminals