Standard factory configurations map these to separate color-coded output pins corresponding directly to cylinders 1 through 3. They use a ground-side switching protocol to open the fuel spray nozzles.

Here is a typical pinout structure you will find on a K6A ECU:

While specific pin numbers change between connector types (such as the common

The Suzuki K6A engine, a 660cc three-cylinder staple in "kei" cars like the Wagon R, Alto, and Jimny, uses various ECU configurations depending on the model year and vehicle application. Finding a "better" pinout involves identifying whether you have a 3-plug or 4-plug system and matching the specific ECU suffix (e.g., -84F7 vs -75C1) to your wiring harness. Core ECU Pinout Assignments

| Generation | Years | ECU Connector | Key Difference | |------------|-------|---------------|----------------| | Gen 1 (early) | 1998–2001 | 64-pin (JAE MX74) | 4-wire TPS, analog MAP | | Gen 2 (late) | 2002–2008 | 72-pin (Sumitomo) | 3-wire TPS, digital MAP, IACV different |

The K6A is a highly popular 660cc 3-cylinder engine used across various Suzuki Kei cars like the Wagon R, Alto, and Carry. Because this engine spans several generations (including naturally aspirated, turbocharged, VVT, and non-VVT versions), .