Suzuki K6a Engine Ecu Pinout !!better!! Instant

: A searchable visual database for selecting specific ECU models.

| Pin No. | Wire Color (Typ) | Function | Description | | :--- | :--- | :--- | :--- | | | Black/White | Main Relay Power | Battery Voltage (12V+) when Ignition is ON. | | A2 | Black | ECU Ground | Chassis Ground / Sensor Ground. | | A3 | Black/Yellow | Ignition Switch Power | 12V+ from Ignition switch (Start/Run). | | A6 | - | Check Engine Light (MIL) | Grounds the bulb to illuminate the dash light. | | A10 | - | Diagnostic (K-Line) | Connects to OBD1 Diagnostic Connector. | | A15 | - | Fuel Pump Relay | Grounds the fuel pump relay to activate the pump. | | A21 | - | A/C Signal | Input from A/C amplifier (requests idle-up). |

On older K6A models, the tach signal comes from the coil; on newer ones, it is a dedicated square-wave output from the ECU.

Found in newer Carry trucks and the JB23 Jimny. These often use a more compact 3-plug layout with high-density pins. Common ECU Pin Functions suzuki k6a engine ecu pinout

Pin — Signal 1 — Ground (chassis) 2 — Fuel pump relay control (FP) 3 — Injector 1 (INJ1) 4 — Injector 2 (INJ2) 5 — Injector 3 (INJ3) 6 — Injector 4 (INJ4) 7 — Ignition coil primary / IG1 8 — Ignition coil primary / IG2 9 — Knock sensor (KNK) 10 — Crankshaft position sensor (CKP) 11 — Camshaft position sensor (CMP) 12 — Mass air flow / intake air temp (MAF/IAT) or MAP input (model dependent) 13 — Throttle position sensor (TPS) signal 14 — Intake air temperature (IAT) — if not combined 15 — Coolant temperature sensor (ECT) 16 — Idle air control / stepper motor (IAC) 17 — Air conditioning request input (A/C) 18 — Neutral or clutch switch input (neutral/clutch) 19 — Brake switch / cruise cancel input 20 — Speedometer / vehicle speed sensor (VSS) input 21 — O2 sensor (lambda) signal (heated) — bank 1 22 — Secondary O2 or wideband (if equipped) 23 — Main relay power (IG power) 24 — Battery constant +12V (B+) 25 — Ignition switch power (IG2) 26 — CAN high / serial comm (or data link) 27 — CAN low / serial comm (or ground for some models) 28 — EEPROM backup / memory power 29 — Diagnostic (K-line / ECU diagnostic) 30 — EGR control / solenoid (if equipped) 31 — Turbo boost control / wastegate solenoid (turbo models) 32 — Not used / spare or chassis ground

Always match the part number stamped on your ECU casing (e.g., 33920-XXXXX) to the specific vehicle generation to prevent wiring errors. Core Circuit Categories & Typical Pin Layouts

Drop the ECU part number in the comments below so we can build a community database. : A searchable visual database for selecting specific

| Pin # | Signal Name | Description | | --- | --- | --- | | 1 | BAT (+12V) | Battery voltage supply | | 2 | GND | Ground | | 3 | IGN (+12V) | Ignition switch voltage supply | | 4 | Fuel Pump Relay | Fuel pump relay control | | 5 | Injector 1 | Fuel injector 1 control | | 6 | Injector 2 | Fuel injector 2 control | | 7 | Injector 3 | Fuel injector 3 control | | 8 | Injector 4 | Fuel injector 4 control | | 9 | O2 Sensor | Oxygen sensor signal | | 10 | Coolant Temp | Coolant temperature sensor signal | | 11 | Airflow Meter | Airflow meter signal | | 12 | Throttle Pos | Throttle position sensor signal | | 13 | Crankshaft Pos | Crankshaft position sensor signal | | 14 | Camshaft Pos | Camshaft position sensor signal | | 15 | Idle Air Ctrl | Idle air control valve control | | 16 | Fuel Pump | Fuel pump control | | 17 | Tachometer | Tachometer signal | | 18 | Speed Sensor | Vehicle speed sensor signal | | 19 | Brake Switch | Brake switch signal | | 20 | A/C Switch | Air conditioning switch signal | | 21 | ECT (PWR) | Engine coolant temperature (power) | | 22 | ECT (Signal) | Engine coolant temperature (signal) | | 23 | O2 Heater | Oxygen sensor heater control | | 24 | MIL (Check Engine) | Malfunction indicator lamp (MIL) control | | 25 | Diagnostic Port | Diagnostic port ( serial communication) | | 26-32 | Not used or reserved | |

The Suzuki K6A is a robust engine, but its electronics are now aging. Whether you are chasing a check engine light or wiring a swap, the key is identifying your specific model year. Use the pinout above as your roadmap, but always double-check with a multimeter. With the wiring sorted, the little 660cc engine is ready to rev freely once again.

Supplies constant battery power for memory. | | A2 | Black | ECU Ground | Chassis Ground / Sensor Ground

Signals the ECU to wake up when the key is turned to the "ON" position.

Often integrated into the MAP sensor or located on the piping. Vital Outputs (Actuators)

: Typically associated with Mitsubishi-manufactured ECUs (e.g., E6T9107H) used in the Every DA64V series.

Measures engine vacuum/boost. Vital for speed-density fuel calculations.