This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. EF Engine ECU Pinouts - DIY or TECHNICAL - Live To Dai

The EF-SE ECU pinout is the roadmap to diagnosing power delivery issues in your Daihatsu Hijet. A is almost always a sign of a compromised ground or a high-resistance power connection. Addressing this quickly—by checking the terminals—will save you from replacing a costly ECU unit.

The ECU pinouts for engine swaps (especially for Kei-truck engines like the EF-SE) can vary significantly based on the specific vehicle model year, the specific ECU part number, and whether the harness is from an automatic or manual transmission vehicle. Always verify these pins with a multimeter and your specific ECU part number before connecting power to prevent damage.

This approach allows precise adjustments—but requires specialized equipment and skill. mbFAST emphasizes that kei truck ECUs are "more difficult than normal cars because there aren't many on the global market" .

If you are wiring this "hot" (standalone swap) without a factory harness:

The jumper points migrate into a centralized 16-pin OBD-II format connector under the lower dash cowl.

DAIHATSU HIJET S210P Engine Control Unit ECU EF-SE 43 ... - eBay

For those performing deep electrical work, sourcing the specific for your S200 or S210 series Hijet is highly recommended, as many diagrams are rare and specific to the Japanese domestic market.

| Function | Typical Wire Color | Notes | |----------|-------------------|-------| | Battery +12V (backup) | White/Red or White | Constant power | | Ignition +12V | Black/Yellow | Switched | | Main relay coil | Yellow/Black or Green/Black | ECU grounds to trigger | | ECU grounds | Black/White or Brown | Multiple pins – essential |

Receives signal from the MAP sensor to determine engine load.

The EF-SE engine typically utilizes a two-connector ECU located near the center console or behind the glovebox, depending on the specific Hijet sub-model. The following pinouts are common for the EF-series EFI systems:

Use a screwdriver or large test light on ECU pins. Low-current circuits will be destroyed.

Understanding the is critical when performing an engine swap, wiring a standalone system, or diagnosing a stubborn electrical issue. The EF-SE engine—a highly efficient 660cc, 3-cylinder, Single Overhead Camshaft (SOHC) power plant—is a staple in generations of Japanese kei trucks and microvans like the Daihatsu Hijet .