Uses specific S200P-compatible injectors (Part: 23250-97204-000). Main ECU Unit:
Engine speed/crankshaft position sensor signal (Positive).
Below is a comprehensive guide regarding the EFSE ECU pinout, how to interpret the wiring, and specific troubleshooting for "hot" starting issues that often plague these models.
Manifold Absolute Pressure (MAP) sensor signal (crucial for load/fuel calculations). Pin 11 (THA): Intake Air Temperature (IAT) sensor signal.
Erratically fluctuating idle, running rich, or random ignition misfires. daihatsu hijet efse ecu pinout hot
The , particularly generations like the S200 and S210P, is a legendary micro-truck valued for its durability and efficiency. At the heart of its electronic fuel-injected variants lies the Daihatsu EF-SE engine , a 659cc SOHC 3-cylinder engine regulated by an Electronic Control Unit (ECU). Whether you are troubleshooting a sudden loss of spark, upgrading your wiring harness, or executing an engine swap, understanding the Daihatsu Hijet EF-SE ECU pinout is a hot priority.
The entire aluminum housing of the unit will feel excessively hot to the touch, eventually frying the capacitors. Step-by-Step Backprobing Guide
Codes are typically two-digit sequences:
Input/Output processor signal, typically utilized for idle speed control or diagnostic handshaking. Dealing with the "Hot" ECU Issue Manifold Absolute Pressure (MAP) sensor signal (crucial for
Are you currently performing an or troubleshooting a specific sensor fault code on your Hijet? EF Engine ECU Pinouts - DIY or TECHNICAL - Live To Dai
is typically a ground. However, on Series 2 EF engines, this was changed to a
| Pin # | Signal Name | Description | | --- | --- | --- | | 1 | BATT | Battery voltage | | 2 | IGN | Ignition switch signal | | 3 | ST | Starter motor signal | | 4 | Fuel Pump | Fuel pump control signal | | 5 | Injector 1 | Fuel injector 1 control signal | | 6 | Injector 2 | Fuel injector 2 control signal | | 7 | Injector 3 | Fuel injector 3 control signal | | 8 | O2 Sensor | Oxygen sensor signal | | 9 | TPS | Throttle position sensor signal | | 10 | MAP | Manifold absolute pressure sensor signal | | ... | ... | ... |
Check the lines for system voltage during engine cranking. If voltage is missing, inspect the primary EFI fuse and the main relay contacts. If power is verified but the system remains unresponsive, check for proper crankshaft speed pulses across the N+ and N- terminal junctions. Without clear rotational feedback, the processor will not trigger the grounding pathways for the ignition coils or fuel injectors. Corrupted Sensor Readings The , particularly generations like the S200 and
The EF-SE engine differs from its twin-cam siblings (like the EF-VE) by utilizing a single overhead cam setup with a streamlined electronic management footprint. The ECU relies on distinct plugs—often an split configuration separating engine sensors from power distribution and chassis inputs.
[Isolate Battery Power] ──> [Expose ECU Under Console] ──> [Backprobe Selected Pin Line] ──> [Monitor Live Multimeter Voltage] EF Engine ECU Pinouts - DIY or TECHNICAL - Live To Dai
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 itself is typically found in the passenger cabin. On most EF-SE equipped Hijet models, the ECU is located in the passenger footwell, often behind the dashboard side trim or kick panel. It's a Denso unit, easily identified by its metal casing and three main wiring connectors.
The ECU is typically located behind the dashboard glove compartment or near the cowl side panel. It manages standard inputs like engine speed, manifold pressure, and coolant temperature, while controlling outputs like fuel injectors and ignition timing. Master ECU Pinout Guide & Terminal Functions
This is arguably the most common failure point on 90s/00s Japanese Kei trucks.