While specific pin locations can vary slightly between the EJ-VE and EF-DET, most L9-series EFI ECUs follow this general structure for their main connectors:
: Most sensor signals (like MAP or TPS) operate on a 5V reference . If you see 12V on these lines, there may be a short to the power rail.
: Commonly used for the Temperature Gauge. wiring diagram daihatsu l9 ecu pinout
These pins are critical for basic operation. If your car won't start, check these first.
: Frequently associated with the Speed Signal. While specific pin locations can vary slightly between
: Often used for Check Engine Light or Ignition signals.
For detailed schematics of specific sub-systems like the or A/C , you can refer to specialized Daihatsu Service Manuals or Workshop Guides . These pins are critical for basic operation
: These ECUs manage variable valve timing ( DVVT ) on certain models, sequential injection, and direct ignition systems. Typical ECU Pinout Configuration (L9 EJ-VE/EF Series)
Daihatsu ECU Wiring Pinout Guide | PDF | Electronic Circuits
Understanding the (specifically the Move L900/L901/L902 ) is essential for engine swaps, performance tuning, or electrical troubleshooting. The L9 generation typically features engines like the EF-VE (naturally aspirated), EF-DET (turbo), and the JB-DET (4-cylinder turbo). Overview of the Daihatsu L9 ECU System