This is often caused by using unshielded wire for the Crankshaft Position Sensor. Electrical noise from the alternator or spark plug wires can corrupt the signal.
Before pinning out your harness, verify your specific ECU part number. Naturally aspirated (NA) variants, turbo variants (VVT and non-VVT), and different model years feature slight variations in pin placement.
The information below focuses primarily on the widely used 34-pin and 26-pin connector setup. For any other configuration, an official service manual is non-negotiable.
Manages target idle speeds under varying electrical loads. suzuki k6a engine ecu pinout high quality
: The PakWheels Forums are a major hub for users swapping K6A engines into other vehicles (like the Suzuki Mehran) and often share high-res photos of wiring looms. ECU Wiring Diagram for Suzuki K6A | PDF - Scribd
Typically features a 3-plug or 4-plug configuration with higher pin counts.
– two rows of 17. Pin C-1 top left, C-18 bottom left. C-19 top right, C-34 bottom right. This is often caused by using unshielded wire
For those interested in exploring the Suzuki K6A engine ECU pinout, here is a sample of the documentation Alex created:
Are you currently working on a or trying to diagnose a specific wiring fault on a stock vehicle?
Sends a ground signal to trigger the fuel pump relay for 2 seconds at prime, and continuously while cranking/running. Naturally aspirated (NA) variants, turbo variants (VVT and
Often feature a two-plug setup with 26-pin and 34-pin connectors.
Below is the standard pinout configuration for the most common . Connector A (26-Pin Power & Sensor Ground) Pin Number Wire Color Function Description A1 Black / White Main ECU Power (+12V from Ignition Switch) A2 Black / Blue Ground (ECU Logic / Digital Ground) A3 Ground (Power Ground to Engine Block) A4 Fuel Pump Relay Control (Low Side Switch) A5 Blue / Black Main Relay Control Output A6 Brown / Yellow Tachometer Signal Output (To Instrument Cluster) A7 Vehicle Speed Sensor (VSS) Input A8 Light Green Malfunction Indicator Light (MIL / Check Engine) A12 Grey / Red Sensor 5V Reference Power (To MAP/TPS) A13 Black / Red Sensor Ground Shield Connector B (34-Pin Engine Signals & Actuators) Pin Number Wire Color Function Description B1 Injector No. 1 Control Signal B2 Brown / White Injector No. 2 Control Signal B3 Brown / Black Injector No. 3 Control Signal B4 White / Blue Ignition Coil No. 1 Trigger B5 White / Round Ignition Coil No. 2 Trigger B6 White / Black Ignition Coil No. 3 Trigger B10 Green / Yellow Idle Air Control Valve (IACV) Signal B14 Light Green / Red Manifold Absolute Pressure (MAP) Sensor Signal B15 Throttle Position Sensor (TPS) Signal B16 Water Blue Engine Coolant Temperature (ECT) Sensor Signal B17 Green / White Intake Air Temperature (IAT) Sensor Signal B20 Shielded Wire Oxygen (O2) Sensor Signal Input B22 Camshaft Position Sensor (CMP) Signal B23 Camshaft Position Sensor (CMP) Ground 🔍 Wire Color Code Key for Suzuki Harnesses
Note: Not all pins are populated on all vehicle models (e.g., Wagon R, Alto, Jimny, Carry).
The K6A ECU controls the fuel pump by grounding the relay circuit via the FPR pin. Connect your ignition-switched 12V to one side of the relay coil, and wire the other side directly to the ECU's fuel pump control pin. Step 3: Connect the Crank and Cam Sensors