| Pin Number | Function | Wire Color (Typical) | Notes | | :--- | :--- | :--- | :--- | | 1 | Injector #1 | Yellow/Blue | | | 2 | Injector #2 | Blue/Red | | | 3 | Injector #3 | Red/Blue | | | 4 | Tachometer Output | Yellow/Green | For cluster output | | 5 | Check Engine Light | Yellow/Red | Grounds bulb to illuminate | | 6 | A/C Compressor Relay | Blue/Black | Active Low | | 7 | Fuel Pump Relay | Black/Red | Controls fuel pump circuit | | 10 | Main Relay Power | Black/White | Battery Voltage (12V+) |
detail 16-pin and 8-pin sensor connections for fuel injectors, oxygen sensors, and ignition coils. Comprehensive Service Manuals : For a full mechanical and electrical overview, the Suzuki K6A-YH6 Engine Technical/Repair Manual Suzuki K6a Ecu Wiring Diagram Pdf
: Often utilizes Yellow/Green (High) and Gray/Yellow (Low) lines for newer ECU versions. Summary of Documentation Quality Source Type Content Focus Best Use Case Technical Manuals Comprehensive engine overhaul and wiring Full restorations or deep troubleshooting Pinout Guides Explicit wire-to-pin mapping (e.g., Denso 33920) Wiring harness fabrication for engine swaps Community Forums Real-world troubleshooting (fuel pumps, OBD ports) Resolving specific installation bugs specific vehicle model's pinout (like a Wagon R or Jimny) or a diagram for an aftermarket ECU ECU Wiring Diagram for Suzuki K6A | PDF - Scribd | Pin Number | Function | Wire Color
Many late-model K6A ECUs are immobilized. If you have an ECU that cranks but refuses to spark or inject fuel, you likely have an immobilizer issue. If you have an ECU that cranks but
Heavy-gauge grounds that bolt directly to the engine block or chassis. Ignition & Fuel Injection Circuit
ECU Wiring Diagram for Suzuki K6A | PDF | Vacuum Tube - Scribd
The K6A ECU usually manages the following primary systems: