TechFix Episode 4: Intelligent Braking – What You Need to Know About the Electronic Braking System on the all-new Pioneer™

Presented by Mack Trucks Academy

The TechFix video series delivers quick, practical tips to help technicians work smarter and repair with confidence.

Episode 4 explains how the Electronic Braking System (EBS) on the all-new Pioneer operates under both normal electronic control and pneumatic backup mode. The video walks through how to interpret EBS warning indicators, understand backup operation, and use TechTool’s guided tests—including Temporary Backup Mode and Reverse Validation—to confirm faults before replacing components. It also highlights common field issues, such as wheel-end pressure faults and APM flow concerns, and clarifies when replacement is necessary—and when it’s not.

The takeaway: Before replacing parts, test the system. Most EBS faults are procedural—not hardware failures. This episode explains how to use backup mode verification and guided diagnostics to prevent unnecessary part swaps.

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