Daihatsu Hijet Ef-se | Ecu Pinout Link

Need more help? Post your specific year and chassis code (e.g., S110V, S120P, S200) along with which pin is acting strangely in the forums.

The Daihatsu Hijet is a popular Japanese kei car that has gained a significant following worldwide for its reliability, fuel efficiency, and versatility. One of the key components that make the Hijet tick is its Engine Control Unit (ECU), which plays a crucial role in ensuring the engine runs smoothly and efficiently. For owners and enthusiasts of the Hijet, understanding the ECU pinout is essential for troubleshooting, modifying, and upgrading the vehicle's performance.

Here is a general overview of the Daihatsu Hijet EF-SE ECU pinout: daihatsu hijet ef-se ecu pinout

The Daihatsu Hijet, powered by the legendary engine (a 659cc inline-3 cylinder, 4-valve per cylinder, DOHC unit), relies on a surprisingly sophisticated engine control unit for its size. This article provides the most detailed breakdown of the ECU pinout available, explains each circuit’s function, and offers real-world diagnostic advice.

The following pinout is based on a standard 26-pin (16+10) or similar 2-plug (22+12) layout common to EF engines. Function Description E1 Engine Ground (Chassis/Main Ground) 2 VC Sensor Power (constant 5V supply to sensors) 3 PIM Manifold Absolute Pressure (MAP) Sensor Signal 4 THW Engine Coolant Temperature (ECT) Sensor Signal 5 N+ Engine Speed/Crank Angle Sensor (Positive) 6 IDL Idle Switch (Throttle Position Sensor Idle Signal) 7 SPD Vehicle Speed Sensor (VSS) Signal 11 +B1 Main Power Supply (Switched from EFI Main Relay) 12 E2 Sensor Ground (Dedicated ground for input sensors) 13 OX Oxygen (O2) Sensor Signal 14 THA Intake Air Temperature (IAT) Sensor Signal 15 T Test Terminal (Used for diagnostic mode/retrieving codes) 16 N- Engine Speed/Crank Angle Sensor (Negative/Ground) 17 PSW Need more help

| Pin | Wire Color | Function | Notes | |------|------------|-----------------------------|----------------------------------| | | B/Y | +12V Battery (Main) | Constant power | | A2 | B/R | +12V Ignition Switch (IG) | Powers ECU when key is ON | | A3 | B/W | Main Relay Control | Switches EFI relay | | A4 | R | Fuel Pump Relay Control | Grounds to turn on pump | | A5 | B | Ground (Power) | ECU main ground | | A6 | B | Ground (Sensor) | Sensor ground | | A7 | Lg/R | Check Engine Light | Switched ground | | A8 | G | Tachometer Signal | To instrument cluster | | B1 | Y/B | Injector #1 | | | B2 | Y/G | Injector #2 | | | B3 | Y/R | Injector #3 | | | B4 | W | Ignition Output (IGT) | To igniter | | B5 | Lg | Distributor Crank Signal (Ne) | Timing rotor | | B6 | Lg/R | Distributor G Signal (G1) | Cylinder identification | | B7 | Lg/W | Distributor G Signal (G2) | | | B8 | R/W | Throttle Position Sensor (VTA) | 0-5V signal | | B9 | G/R | Intake Air Temp (THA) | | | B10 | B/Y | Coolant Temp (THW) | | | B11 | W/B | O2 Sensor Signal | | | B12 | B/Lg | VSV (EGR or Purge) | |

| Code | Fault | Likely Pin Involved | | :--- | :--- | :--- | | 11 | No IG signal (igniter) | B7, A7 | | 12 | No Ne/G signal (cam sensor) | A12, A13 | | 14 | Igniter signal continuous | B7 | | 21 | O2 sensor | A9 | | 22 | Coolant temp sensor | A3 | | 24 | Intake air temp sensor | A1 | | 31 | MAP sensor | A2, A16 | | 41 | TPS | A4, A14 | | 51 | A/C switch / Neutral switch | C2, A6 | One of the key components that make the

89560-B2460 (A32) or similar variants