When identifying wires in the harness, you may encounter these common color codes used in the L900/L902 series: Speed signal to ECU. Yellow/Black: Check Engine Light. Red/Yellow: RPM (Tachometer) signal. Blue/Yellow: Fuel gauge. White/Black: Common Ground. Critical Resources for Verification
For the Daihatsu L9 (Move) series, ECU pinouts vary significantly depending on whether you have the (1.0L 3-cylinder), EF-DET (660cc 3-cylinder turbo), or JB-DET (660cc 4-cylinder turbo) engine. Common Pinout Examples wiring diagram daihatsu l9 ecu pinout
Main ECU power supply from the EFI relay, active when the ignition is ON. BATT: Constant battery backup power for memory. E1 / E01 / E02: Primary engine grounds. Sensor Inputs: PIM: Intake manifold pressure (MAP sensor) signal. THW: Engine coolant temperature (ECT) sensor signal. THA: Intake air temperature (IAT) sensor signal. VTA / VTHO: Throttle position sensor (TPS) signal. SPD: Vehicle speed sensor (VSS) signal. Actuator Outputs: #10, #20, #30: Fuel injector triggers. IGT1, IGT2, IGT3: Ignition timing signals for the coils. FC / FC1: Fuel pump relay control. W: Check Engine Light (CEL/MIL) output. Wiring Harness Color Codes (L9 JBDET Example) When identifying wires in the harness, you may