The ECU wasn't just "hot" on paper anymore; it was processing thousands of signals a second, vibrating with the rhythm of a machine reborn.
Ensure E1 has less than 0.1 ohms of resistance to the vehicle chassis.
The is a critical piece of technical data required for diagnostic troubleshooting, engine swaps, and converting old carbureted mini trucks into fuel-injected setups. The EF-SE engine—a 660cc, 3-cylinder, Single Overhead Cam (SOHC) Electronic Fuel Injection (EFI) engine—relics heavily on a specific 2-plug Denso control unit configuration.
[Battery 12V] ---> [EFI Fuse] ---> [Main Relay] ---> [ECU +B1 Pin] | (If missing: check for open circuit) | [VC Pin (5V Out)] | (If missing: internal ECU failure) daihatsu hijet efse ecu pinout hot
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 )
Are you dealing with a , or is a specific component like no spark or no fuel causing the issue?
Over time, the wiring loom near the exhaust manifold can become brittle and melt, causing 12V power wires to short to the ground or signal wires. This can instantly fry ECU pathways. The ECU wasn't just "hot" on paper anymore;
Fuel pump relay control / Fuel pump feed (FP)
When working on your Hijet's ECU wiring, follow these safety steps: Battery Disconnect:
The EF-SE engine is a 660cc three-cylinder unit found in many seventh-generation Hijet models (S200, S210, S320 series) . Its performance is managed by a Denso Electronic Control Unit (ECU) . This unit uses signals from sensors monitoring engine temperature, air pressure, oxygen levels, and knock to precisely control fuel injection and ignition timing . A critical detail to note is that the EF-SE engine uses a unique "12+1" trigger wheel mounted on the camshaft, which differs from the more common designs found on many other engines . The EF-SE engine—a 660cc, 3-cylinder, Single Overhead Cam
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Crankshaft or distributor signal used to calculate engine RPM and timing.
On S200P/S210P Hijet models, the ECU is typically mounted behind the dashboard on the passenger side (right-hand drive models) or driver side (left-hand drive models). The ECU is a with identifying numbers such as 89560-97D80 or 89560-87532 . The connector layout varies slightly by model year—Daihatsu is notorious for changing pin assignments across production runs.