The primary high-speed data communication lines used in modern vehicles.
A Dimsport ECU pinout is a visual wiring schematic. It shows exactly where to connect a tuning tool to an ECU outside the vehicle. Dimsport manufactures industry-standard tuning hardware like the New Trasdata and New Genius master/slave devices.
Many tuners (like "Diesel Pump UK" or "Tuning Made Easy") show their bench setups on video. While they won't always give you a PDF, you can pause the video when they connect the Dimsport clips to the ECU header. The wire colors and pin numbers are visible.
Understanding the hardware is the first step to using pinouts correctly:
Before applying power, check continuity between the pinout diagram and your harness.