Chapter 1: Universal Testing Methods – Dan’s Version

Course Description:
This course covers the core testing methods used in automotive diagnostics. You’ll learn how to approach problems with a structured process—verifying the concern, researching system operation, and testing fuel, ignition, mechanical, and electrical systems. Topics include fuel trim analysis, scan data interpretation, voltage drop testing, vacuum leak detection, and relative compression testing. The goal is to give you a clear, repeatable way to diagnose problems accurately.