Fuel Pump Relay trigger (Switches the relay to ground). 🌡️ Engine Sensors (Inputs)
| | Wire Color (Example) | Typical Function | Notes | | :--- | :--- | :--- | :--- | | Power & Ground | | A1 | Yellow/Red | Main Power (Constant) | +12V from battery, always live. | | A3 | Black/White | ECU Ground (Power) | High-current ground for injectors, coils. | | A6 | Black | ECU Ground (Sensor) | Sensor return ground. | | A30 | White/Red | Main Relay Control | Switched +12V to ECU after key-on. | | Sensors | | A12 | Light Green/Red | MAP Sensor Signal | Manifold Absolute Pressure signal input. | | B1 | Gray/Red | Ignition Signal (IG1) | Ignition switch signal. | | B2 | Blue/Red | Engine Speed Signal | Tachometer output from ECU to dashboard. | | B8 | White | O2 Sensor Signal | Heated Oxygen Sensor input for fuel trim. | | B9 | Yellow | Throttle Position Sensor (TPS) | Signal from the throttle position sensor. | | B10 | Blue/Black | ECT Sensor Signal | Engine Coolant Temperature sensor input. | | B15 | Blue/White | Camshaft Position Sensor (CMP) | Signal from the cam sensor (on heads w/o distributor). | | B16 | Yellow/Black | Vehicle Speed Sensor | Signal from the speedometer/transmission. | | B23 | Black/Red | Crankshaft Position Sensor (CKP) | Signal from the crank sensor on the crankshaft pulley. | | Actuators & Outputs | | A15 | Black/Red | Injector #1 | Ground-side control for injector #1. | | A16 | Black/Yellow | Injector #2 | Ground-side control for injector #2. | | A17 | Black/Green | Injector #3 | Ground-side control for injector #3. | | A31 | Green/Red | Ignition Coil/Transistor #1 | Ignition signal for coil pack #1. | | A32 | Green/Yellow | Ignition Coil/Transistor #2 | Ignition signal for coil pack #2. | | A33 | Green/Black | Ignition Coil/Transistor #3 | Ignition signal for coil pack #3. | | B17 | Red/Blue | Idle Air Control (IAC) | Signal to the idle air control valve. | | Communication & Diagnostics | | B25 | Black/Green | Check Engine Light (CEL) | Ground-side control for the Malfunction Indicator Lamp (MIL). | | B27 | Green | Diagnostic (K-Line) | K-line for OBD1-style diagnostics (early models). | | C8 | Blue/Red | CMP Sensor (Alternative) | Alternative pin for cam position sensor. | | C12 | Pink/Black | Fuel Pump Relay | ECU ground control for the fuel pump relay. |
Camshaft Sensor (Pin C8), MAP Sensor (Pin A12), Engine Coolant Temp (Pin B10) Step-by-Step Loom Repacking and Standalone Conversion 1. Stripping the Non-Essentials (The "De-Pinning" Phase)
Late Jimny JB23 (Types 7–10), Carry DA65T/DA16T.
With all pins removed, use your multimeter to check each wire from the ECU pin to the component (sensor, injector, coil). Write down any wire that fails (resistance > 5 ohms).
Wakes up the ECU when the key is turned to the "ON" position.
The Suzuki K6A is a legendary 0.6-liter 3-cylinder engine, widely used in JDM icons like the Suzuki Jimny , Alto, and Wagon R. An is a specialized wiring resource—often a consolidated digital guide or a physical "patch" loom—designed to simplify engine swaps and performance tuning by clearly mapping the K6A's complex wiring harness. Why You Need a Pinout Repack
Most K6A engines (depending on the year and specific model) use a multi-connector system, often divided into three or four distinct plugs (e.g., 26-pin, 16-pin, 22-pin, or similar layouts depending on the generation). Key Sensor Inputs & Actuator Outputs
The ECU needs this data to calculate the "Air-Fuel Ratio" and timing. Water Temperature Sensor (ECT). THA: Intake Air Temperature (IAT). VTA: Throttle Position Sensor (TPS) signal. PIM: Manifold Absolute Pressure (MAP) sensor signal. OX: Oxygen Sensor (Lambda) signal.
Typically uses a 2-plug layout (26-pin + 22-pin configuration). 2. Middle Generation (Plug-Top Ignition / VVT Introduction)