You can find detailed diagrams and step-by-step pinout descriptions through the following sources: Official Technical Manuals Suzuki K6A-YH6 Repair Manual
Disconnect the battery. Unbolt the ECU from the passenger kick panel (RHD vehicles) or behind the glove box (LHD conversions).
Ignition & Starter
This post is for educational and diagnostic purposes only. Modifying or repinning an Engine Control Unit (ECU) carries the risk of severe damage to the vehicle’s electrical system, ECU failure, or engine damage. Always consult a professional service manual and disconnect the battery before working on electrical connectors.
: Terminals for Fuel Injectors No. 1 through No. 3 are critical for engine swaps and repacking.