The wiring configurations differ significantly based on the specific engine model found in the L9 series:
If the ECU won’t power on, check for 12V at A1 with ignition ON, and continuity to ground at A2 and A3. wiring diagram daihatsu l9 ecu pinout
: These newer generation engines use a 150-pin interface with specific pins for camshaft and crankshaft position sensors (Pins 107, 39, 59, 127) and EFI relays (Pin 58). The wiring configurations differ significantly based on the
Daihatsu ECU Wiring and Diagram Guide | PDF | Electrical Connector wiring diagram daihatsu l9 ecu pinout
For reading fault codes (Malfunction Indicator Lamp) on older L9 models: