CDI Electronics 531-0119I4 M.E.D.S. Marine Engine Diagnostic System MEFI 1-4 Inboard Upgrade

The CDI Electronics 531-0119I4 is a software upgrade/add-on for the M.E.D.S. (Marine Engine Diagnostic System) that adds compatibility for MEFI 1-4 gasoline inboard engines. This professional-grade diagnostic package enables marine technicians to troubleshoot and diagnose GM Marine Electronic Fuel Injection systems used in inboard and sterndrive applications from the early 1990s through mid-2000s.

Key Features:

• Compatible with MEFI 1, 2, 3, and 4 gasoline inboard engines
• Works on Windows-based PC, laptop, or tablet (Windows 7, 8.1, or 10)
• Collects real-time engine data and identifies active fault codes
• Runs comprehensive engine tests and diagnostic checks
• Generates and prints pre-packaged diagnostic reports
• Reduces troubleshooting time and improves diagnostic accuracy
• Expandable platform - add additional engine platforms as needed

Important Note: This is an upgrade/add-on that requires you to already own a M.E.D.S. individual platform or bundle platform. It cannot be used as a standalone diagnostic system.

The M.E.D.S. system connects to the engine's diagnostic link connector (DLC) to communicate with the ECM (Engine Control Module), allowing technicians to read diagnostic trouble codes (DTCs), monitor sensor inputs, test fuel injectors, and perform advanced diagnostics that would otherwise require multiple tools and software packages. Ideal for marine service shops, dealerships, and professional technicians working on GM-based marine engines.