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4″ CAT III Pin Tip Probe Set (Red & Black)

Scope Basics: Coupling& Filtering by Scot Manna

Scope Basics: Voltage& Current by Pedro De La Torre

Scope Basics: Probes& Connections by Scot Manna

Catalytic Efficiency Diagnostics: Proving the Cause of P0420/P0430 by Tim Jones

Scope Basics: Set Up& Signal Capture by Matt Fanslow

Scan Tool Test Drive: Key Steps for a Repeatable Routine by Tim Jones

Understanding Scan Data Load& Pressure PIDs by Scot Manna

Generic Scan Data Fundamentals by Pedro De La Torre

Uncovering Problems Using Fuel Trims by Tim Jones

Understanding Scan Tool Modes for Better Diagnostics by Pedro De La Torre

Technician Development 2026

No Crank Diagnosis: Step-by-Step Testing Strategies by John Thornton

Body Electrical Output Diagnostics by Pedro De La Torre

Late Model Fuel Trim Diagnostics& Case Studies by John Thornton

Diagnostic Examples Where Only a Scope Will Do by Scot Manna

Network Diagnostics: Emphasis on Scan Tools / 2020& Newer Vehicles by John Thornton

Asian Vehicle Driveability Case Studies Featuring Reoccurring Diagnostic Problems by John Thornton

Domestic Driveability Case Studies Featuring Reoccurring Diagnostic Problems by John Thornton

John Thornton and Friends 2026

120ohm CAN Resistor Lead

CAN Network Isolation/Termination Kit

AutoProPAD Core

AutoProPAD G3 Evolution