12V signal received when the key is turned to the "ON" position. Activates the ECU.
Controls the bypass air channel around the throttle body to stabilize idle RPM under varying loads (e.g., A/C activation).
A safety confirmation signal sent back from the ignition coils to the ECU, confirming a spark successfully occurred. wiring diagram daihatsu l9 ecu pinout
You can often find full repair manuals, such as the EJ-VE EFI System Manual
The wiring configurations differ significantly based on the specific engine model found in the L9 series: 12V signal received when the key is turned
The ECU then gets power from a relay connected to the battery through a 15 amp fuse.
5V square-wave output triggers sent from the ECU to the igniter circuit within the coil-on-plug packs, dictating spark timing. A safety confirmation signal sent back from the
Includes pins for Power (+B1, +B2), Ignition (IG), Injectors (INJ), Fuel Pump Control (FC), and various Grounds (E01, E02, E03). Plug 2 (16 Pins):
Below is a common wiring signal guide for the L9 series, often used when adapting L9 harnesses to other models like the L5/L6. Signal Description Wire Color (L9) Speed Signal to ECU Light Green/Red Provides vehicle speed data for engine management. RPM (Tachometer) Red/Yellow Sends engine speed signal to the meter. Check Engine Light Black/Yellow Connected to the "Check Engine" indicator on the dash. Battery Indicator Charging system status signal. Ground (Earth) Chassis ground connection. Switched 12V Light Green or Blue Ignition-controlled power source. Common Engine-Specific Guides 3SZ-VE / K3-VE