Daihatsu Hijet Efse Ecu Pinout Hot 【AUTHENTIC】

If your Daihatsu Hijet EFSE is dead, follow this flowchart using the pinout above:

These wires carry pulsed 12V to critical components. They are "hot" only when the engine is running or cranking. daihatsu hijet efse ecu pinout hot

| Pin # | Component | Wire Color | Behavior | | :--- | :--- | :--- | :--- | | D1 | Injector #1 | Pink (P) | Switched ground (from ECU) | | D2 | Injector #2 | Light Blue (L) | Switched ground (from ECU) | | D3 | Injector #3 | Yellow (Y) | Switched ground (from ECU) | | D4 | Ignition Coil (Power Transistor) | White/Blue (W-L) | 12V pulsed signal (RPM) | | D5 | Idle Air Control (IAC) Valve | Red/Black (R-B) | 12V PWM signal | If your Daihatsu Hijet EFSE is dead, follow

Key Note: The injectors and coil receive main 12V from the EFI relay before the ECU. The ECU wires (D1-D4) provide the ground trigger. To test if an injector is "hot," check the opposite pin on the injector itself for 12V with the key on. This is not a "12V hot" but a signal hot

| Pin | Function | Notes | |------|---------------------|-----------------------------| | A1 | +12V Battery (main) | Always hot | | A2 | +12V Ignition (IG) | Hot in RUN/START | | A3 | Ground (ECU main) | To chassis/engine | | B4 | Coolant temp sensor | 2-wire sensor – critical for hot start | | B6 | Ignition signal (from igniter) | Or to igniter? | | C2 | Fuel pump relay control | Grounds relay coil | | C5 | Crank signal (distributor) | RPM signal | | C7 | TPS (if equipped) | Some EFSE have TPS, some don't |

Does anyone have the full pinout diagram? A photo of a factory wiring diagram page or a hand-drawn pin map would be huge.

This is not a "12V hot" but a signal hot. The EFSE uses a magnetic reluctance sensor. If the air gap is wrong or the shield wire (pin C3 shield) is broken, you get no RPM signal.