) on the diagnostic connector, which the ECU interprets to signal stored faults.
Example pin entries (abbreviated)
Temperature sensor inputs for Engine Coolant and Intake Air respectively. daihatsu hijet efse ecu pinout hot
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
Check the main EFI Relay socket and the primary ignition wiring loom underneath the dashboard. Corrosion on these pins causes voltage drops, meaning the ECU might receive under 9V and automatically shut down. 2. Missing Reference Voltage ( VC ) ) on the diagnostic connector, which the ECU
The Electronic Control Unit (ECU) manages the Electronic Fuel Injection (EFI) system by processing signals from various sensors and controlling actuators like injectors and the fuel pump. In many Hijet models, the ECU is located behind the dashboard or glove compartment area. Critical ECU Pinout Terminals
While specific pin locations can vary by year and exact model (e.g., S200V vs. S210P), many Daihatsu EF-series ECUs share standard terminal labels found inside the casing or in factory service manuals. +B1 / +B2: Main power supply from the battery/ignition. E1 / E2: Main ECU grounds. PIM: Pressure Intake Manifold (MAP sensor signal). THW: Water temperature sensor signal. THA: Intake air temperature sensor signal. OX: Oxygen (O2) sensor signal. IDL: Idle switch signal. SPD: Vehicle speed sensor signal. N+ / N-: Engine speed (RPM) or crankshaft position signals. VC: 5V reference voltage for sensors. Pro-Tips for Pinout Troubleshooting Understanding its ECU pinout is critical for troubleshooting
Below is the (36-pin main connector + 18-pin sub connector depending on exact ECU revision). Always verify with your specific ECU model number (e.g., 89661‑BZ020, 89661‑BZ030).
Looking directly into the wire-entry side of the plug (or the back of the PCB sockets), the pinouts for the are categorized to ensure the engine runs flawlessly. Sensor and Input Pins
Daihatsu EJ-VE Engine ECU Manual | PDF | Throttle | Ignition System