Table of Contents

Introduction
As today’s vehicles become increasingly
complex, so does the job of the technician.
Wiring diagram navigation skills are critical to
diagnosing and repairing today’s vehicle in a
timely and accurate manner.
This Self Study Program is not intended to
instruct the technician how the electrical system
operates in a vehicle. Given an understanding
of electrical operation, this Self
Study Program will introduce you to the skills
necessary to read Volkswagen wiring diagrams.
In this program you will be exposed to all
aspects of wiring diagrams, including:
Commonly used symbols and their
meanings
Current tracks, including how to
follow circuits between pages
or diagrams
Component identification
DIN standards for terminal designations
Wiring color codes and gauge (size)
Terminal identification on both
connectors and components
Introduction
This book will provide examples of various
types of circuits. The Computer Based
Training (CBT) CD included at the end of this
self study will provide an opportunity to practice
“hands-on” wiring diagram navigation.
Areas of text that give the technician an
opportunity to practice the concepts in the
CBT will be designated with an icon of a CD
(below) at the beginning of that section.
1