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Modern vehicles rely on interconnected networks to operate electronic systems efficiently. While high-speed Controller Area Network (CAN) handles critical engine, transmission, and drivetrain communications, low-speed networks such as Local Interconnect Network (LIN), J1850, and K-Line manage smaller body-related systems and diagnostic access. Understanding how these networks operate, their voltages, and signaling patterns is essential for accurate troubleshooting and repair.
In this technical focus article, we explore the evolution of vehicle steering systems, from early mechanical designs to today’s electric power steering (EPS) technology. Understanding these systems is crucial for modern technicians using Snap-on® car diagnostic tools. Learn about the five types of vehicle steering systems in detail: Worm and sector, recirculating ball, rack and pinion, hydraulic power steering, and electric power steering.
In this Technical Focus Article, learn about the main components of Variable Valve Timing, the functions & benefits, VVT history, and common causes of VVT malfunction. We include a case study on a 2004 Honda Accord® EX 2.4L as well!
In this Technical Focus Article, you'll learn how using a lab scope alongside a scanner gives techs deeper, real-time insight for more accurate diagnostics that reveal intermittent faults hidden in OEM-specific systems.
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Learn how modern SRS systems operate and why IMU calibration is critical after repair. Discover how to diagnose SRS faults, avoid comebacks, and complete repairs confidently using Snap‑on diagnostic software.
Discover how Fast‑Track Guided Component Tests help technicians verify electrical and electronic systems, reduce misdiagnosis, and repair with confidence using known‑good waveforms and scope‑based testing.
Learn how modern automatic transmissions are electronically controlled, how to test them with Snap‑on tools, and how special functions like IVT TCU Pressure Learn and Oil Pressure Characteristics Input improve accuracy and repair success—featuring Hyundai Elantra (2015–2021, IVT) and Nissan NV1500 4.0 L (2020) case studies