If your K6A cranks but won't start, check Connector B, Pin 1 (Crank Angle Sensor) and Pin 2 (Cam Angle Sensor).
The Suzuki K6A engine utilized several different ECU generations. When searching for pinouts, the year and model of the donor vehicle are the primary determinants. suzuki k6a engine ecu pinout
Note on Physical Identification: The ECU is typically located under the dashboard on the passenger side (RHD vehicles) or driver side (LHD conversions). The ECU label often carries a part number (e.g., 33920-xxxxx). Using this number is the most accurate way to source a specific wiring diagram. If your K6A cranks but won't start, check
Below is the most commonly referenced pinout for the K6A turbo (manual transmission) found in late 90s to early 2000s Alto Works and Wagon R Turbo. Note on Physical Identification: The ECU is typically
Note: Pin positions are viewed from the wiring harness side (not the ECU component side) unless specified.
| Pin | Wire Color | Function | Notes | | :--- | :--- | :--- | :--- | | A1 | B (Black) | Ground (ECU Main) | Must have clean chassis ground | | A2 | B/Y (Black/Yellow) | Power (Main Relay) | 12V with ignition ON | | A3 | G (Green) | Injector #1 | Ground signal from ECU | | A4 | L (Blue) | Injector #2 | Ground signal from ECU | | A5 | LG (Light Green) | Injector #3 | Ground signal from ECU | | A6 | B/W (Black/White) | Ignition Coil #1 | IG signal | | A7 | Y (Yellow) | Ignition Coil #2 | IG signal | | A8 | R (Red) | Ignition Coil #3 | IG signal | | B1 | R/Y (Red/Yellow) | Power (Constant 12V) | Direct from battery | | B2 | B (Black) | Sensor Ground | Do not mix with chassis ground | | B3 | G/R (Green/Red) | Throttle Position Sensor (TPS) | 0.5V idle – 4.5V WOT | | B4 | L/W (Blue/White) | Manifold Absolute Pressure (MAP) | 1.0V idle / 3.5V boost | | B5 | G/W (Green/White) | Intake Air Temp (IAT) | 2-3V at 20°C | | B6 | B/R (Black/Red) | Coolant Temp Sensor (ECT) | ~2.5V cold / 0.5V hot | | B7 | W (White) | Camshaft Position Sensor (CMP) | 5V square wave | | B8 | B (Black) | Shield/Case Ground | For sensor wiring shield | | C1 | Br (Brown) | Boost Control Solenoid (if turbo) | PWM signal, ~12V | | C2 | R/B (Red/Black) | Fuel Pump Relay Control | Switched ground | | C3 | Y/B (Yellow/Black) | Check Engine Light (MIL) | Switched ground to dash | | C4 | L/R (Blue/Red) | Idle Air Control Valve (IACV) | Stepper motor coil A | | C5 | L/B (Blue/Black) | IACV Coil B | Stepper motor coil B | | C6 | P (Pink) | Diagnostic Switch (DLC) | Connects to pin 9 of OBD connector | | C7 | O (Orange) | Vehicle Speed Sensor (VSS) | 5V square wave, 4 pulses/rev | | C8 | G/B (Green/Black) | O2 Sensor (Primary) | 0.1V lean – 0.9V rich |
Disclaimer: Wire colors vary by chassis. A 1997 Cappuccino will differ slightly from a 2005 Jimny.
