Suzuki K6a Engine Ecu Pinout High Quality Link

While exact pinouts can vary slightly by model year and specific vehicle application (such as the Suzuki Every DA64V

| Pin | Connector | Wire Color | Signal Name | Description / Voltage | |-----|-----------|------------|----------------|------------------------| | ||||| | A1 | C1 | B/Y (Black/Yellow) | +12V Main Relay | Battery power via EFI relay | | A2 | C1 | B (Black) | Sensor Ground | ECU internal ground (sensors) | | A3 | C1 | B (Black) | Power Ground | High current ground (injectors, coils) | | A31 | C1 | B (Black) | Power Ground | Secondary high current ground | | B1 | C2 | B/R (Black/Red) | +12V Backup | Constant battery for keep-alive memory | | B2 | C2 | B/W (Black/White) | +12V Ignition Switch | Switched power (engine run/start) | | Sensors ||||| | A4 | C1 | Lg/R (Light Green/Red) | MAP Sensor Signal | 0.5–4.5V (idle to WOT) | | A5 | C1 | Lg/B (Light Green/Black) | IAT Sensor Signal | Intake air temp (thermistor) | | A6 | C1 | G/W (Green/White) | ECT Sensor Signal | Engine coolant temp | | A7 | C1 | Y (Yellow) | TPS Signal | Throttle position 0.5V idle → 4.5V WOT | | A8 | C1 | B (Black) | Sensor Ground | Common return for MAP, TPS, ECT | | A9 | C1 | R (Red) | +5V Sensor Reference | VREF for TPS, MAP, etc. | | A10 | C1 | B/Y (Black/Yellow) | CMP (Camshaft Sensor) | Hall effect, 1 pulse/2 crank revs | | A11 | C1 | B (Black) | CMP Ground | | | A12 | C1 | Y/R (Yellow/Red) | CKP (Crankshaft Sensor) | 24 teeth (missing 2) – 12V square wave | | A13 | C1 | B (Black) | CKP Ground | | | Ignition & Fuel ||||| | B4 | C2 | Y/G (Yellow/Green) | Injector Cyl 1 | Ground switching by ECU, ~12V peak | | B5 | C2 | Y (Yellow) | Injector Cyl 2 | | | B6 | C2 | Y/B (Yellow/Black) | Injector Cyl 3 | | | B7 | C2 | W (White) | IAC Valve (Stepper A) | Idle air control coil 1 | | B8 | C2 | W/B (White/Black) | IAC Valve (Stepper B) | Coil 2 | | B9 | C2 | W/R (White/Red) | IAC Valve (Stepper C) | Coil 3 | | B10 | C2 | W/G (White/Green) | IAC Valve (Stepper D) | Coil 4 | | B14 | C2 | B/R (Black/Red) | Ignition Output Coil 1+4 | Fires cylinders 1 & 4 (wasted spark) | | B15 | C2 | B/Y (Black/Yellow) | Ignition Output Coil 2+3 | Fires cylinders 2 & 3 | | Vehicle & Auxiliary ||||| | A15 | C1 | G (Green) | VSS (Vehicle Speed Sensor) | 4 pulses per revolution of speedo | | A18 | C1 | P (Purple) | Start Signal | 12V when cranking | | A22 | C1 | Lg (Light Green) | AC Switch Input | 12V = A/C request | | B20 | C2 | R (Red) | Check Engine Light | Ground output to dash lamp | | B22 | C2 | B/O (Black/Orange) | Fuel Pump Relay Control | Ground to activate fuel pump | | B24 | C2 | G/B (Green/Black) | Radiator Fan Relay | Ground output at ~98°C | | B30 | C2 | Y (Yellow) | Diagnostic Switch (DLC) | Grounding this pin enables diag mode | | B31 | C2 | W/B (White/Black) | Serial Data (K-Line) | ISO 9141-2 (older Suzuki protocol) |

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

The Suzuki K6A engine evolved from using distributor-based ignition systems to modern direct ignition (Plug-Top Coils). Because of this evolution, ECU connector configurations generally fall into two categories: suzuki k6a engine ecu pinout high quality

Suzuki K6A ECUs typically use a multi-connector system. The number and type of connectors are one of the first major physical differences you will see:

Sequential or batch-fired ground signals to the injectors.

: 64 (32+32) or 56 (32+24) on earlier models. While exact pinouts can vary slightly by model

Triggers individual smart coils (COP) or a distributor module.

To wake up the ECU, these pins must be connected correctly to your battery and ignition switch. Constant power for ECU memory. +12V Switched (IGN): Power from the ignition switch.

Before we dive into pins and voltages, let’s address a common pitfall. Scouring the internet for a K6A pinout often yields blurry scans, translated errors, or generic diagrams labeled “Suzuki 3-cyl.” 1 Control Signal B2 Brown / White Injector No

Must be grounded directly to the engine block or clean chassis metal.

The Suzuki ECU pinout configuration is similar to the Hitachi unit, with some variations: