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Comprehensive Guide to Daihatsu Hijet EF-SE ECU Pinouts The with the EF-SE engine (a 0.6L non-turbo SOHC 3-cylinder) is a staple of the Japanese mini-truck (Kei truck) world. Understanding its ECU pinout is critical for troubleshooting sensor issues, performing engine swaps, or wiring aftermarket accessories like tachometers or air conditioning relays. Understanding the EF-SE ECU Configuration
If you are reading this, you are likely staring at a mess of wires under the dashboard of a Daihatsu Hijet (S82/S83/S85 series) or its industrial cousin, the Midget II. You have probably heard the engine crank but refuse to start, or you are trying to install a standalone management system. The phrase you searched for——tells us exactly what you need: the live, high-priority, power-related pin data for the EFSE engine control unit.
This pin provides switched battery voltage when the ignition is in the "ON" position.
If you short pin C1 or C2 to ground, the ECU will die instantly. Never pierce these 5V reference wires with a test light connected to battery positive.