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> Lab Scopes Accessories > LIN Bus Diagnostics by John Thornton


LIN Bus Diagnostics by John Thornton

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Premieres on Tuesday May 7, 2024, 7:00pm CST

On the live broadcast, Zoom will send you an email an hour before the broadcast begins.

One week after the live broadcast unlimited video access will be available at the ASI website. Your login credentials for the ASI website will be emailed to you from AESwave. If you already have an ASI account use your existing login.


LIN Bus Networks are widely used in modern vehicles for charging systems, fuel pumps, steering wheel controls, and more. While wiring faults are common, modules can be expensive to replace unnecessarily which means techs need to accurately diagnose the sources of LIN Bus problems.

This network diagnostics class provides a plan to identify & track down faults within LIN Bus systems using a combination of diagnostic tools, service information, and knowledge of the LIN Bus protocols.
The main goals of this class are:
1. Understanding how LIN Bus operates.
2. Being able to ID good LIN Bus activity vs bad LIN Bus activity.
3. Diagnosing several examples of bad LIN Bus systems.

Topics Covered:
• LIN Bus Operation
• Message structure
• How modules communicate
• Understanding codes, service information & wiring diagrams
• What known good looks like
• Examples of bad module communications
• Testing with diagnostic tools
• What to expect with a scope & multimeter
• Isolating problem modules
• How to track down wiring issues

Instructor John Thornton

Class Length approx 2 hrs

PDF Class Manual included, to be downloaded after logging in to watch the video.

Streaming Delivery
Watch it live on the dates listed above; you will receive invite emails from Zoom.

On Demand Delivery
About a week after the livestream, watch the recording whenever you want at the ASI site! Login credentials for the ASI site will be emailed to you from AESwave.

About John Thornton
John discusses how to ground your scope during a seminarFor the past 20 years, John has provided the automotive aftermarket with hands-on and classroom training on a wide variety of topics, including: engine and transmission driveability, module programming, bus communication issues, and electrical diagnosis, lab scopes and scan tools. In the process he has become the foremost trainer in the nation for professional technicians, school instructors, and technical trainers.

The information and techniques John presents have been gleaned over 30 years in the Chicago area as a diagnostic technician, working in the bay and now as mobile tech. He is a mechanical engineer and has an extensive electronics background.

"If you go to just one class, ya'gotta go to John's class, no matter what the topic is."  Bob in IL.

"John is the trainer that other trainers are measured by." Harvey in BC.

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