Component Testing: Introduction

Component testing procedures are provided to determine whether a component is good or bad.

Testing information for each component includes a schematic with component terminal locations and step-by-step test procedures. Component terminals are identified by:

1. the circuit number of the wires that connect to that terminal,
2. the wire insulation color, and
3. letters or numbers that may be marked on the component.
   Fig 1: Identifying Component Identification Label

   Courtesy of FORD MOTOR CO.

The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column TO TEST. If you wish to test the complete component, perform all tests.

Connect the tester to the terminals shown in the second column and operate the component as shown in the third column.