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Ignition System Testing Manual

Available Formats: eBook

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Product Details:

OEM flowcharts are linear documents that focus on open circuit testing. This process takes a long time, it can also be misleading because faults don’t always show up under flowchart testing conditions. The lab scope offers a way to measure actual circuit activity under actual operating conditions.

This manual is designed to challenge even the most experienced lab scope users with new techniques and tips to leverage the power of the lab scope. However, even new lab scope users will get what they need to take those first steps.

This manual includes numerous real-world examples, including:

  • Hand held and PC based Lab Scopes
  • Current probes
  • Current test alternatives
  • Lab Scope voltage drop tips & tricks
  • Circuit access tools
  • Specific Ignition Control (IC), Primary, and Secondary voltage tests
  • Specific Primary current tests.

After reading this manual you will have learned new time saving combination tests and strategies for quickly pinpointing elusive faults

Note: Engine position sensors used for ignition timing and sequence are covered in the ATG Lab Scope Sensor & Switch Testing Manual.


Once purchased, this digital book can be viewed through your account page, which is automatically created for all customers. Please refer to your order confirmation email for further details. Your subscription to this digital book is valid until ATG updates the book. Our E-books are currently only compatible with the latest versions of all browsers except for Safari. For the best user experience please download one of the latest browser versions We're sorry for the inconvenience.


Section 1:  Introduction

  • Diagnostic Process
  • Ohm’s Law
  • Automotive Signals
  • Tool Options
  • Voltage Measurement
  • Current Measurement
  • Cool Probes & Adapters
  • Lab Scope Setup

Section 2:  Ignition Systems

  • System ID & Test Selection
  • Ignition Control (IC)
  • Primary Voltage & Current Testing
  • Secondary Voltage Testing
  • Firing Line & Burn Line Interpretation
  • DIS Ignition Power & Waste Waveforms
  • Ignition System Fault Examples