| Pin | Function | Signal / Condition | | :-- | :---------------- | :--------------------------------------------------------------------------------------------------------------------- | | 25 | Pressure Sender | 4.5V or <0.19V indicates a DTC 11 | | 33 | Throttle Sensor | 4.73V or <0.25V indicates a DTC 13 | | 24 | Crank Angle | No signal for a length of time at pin 24 (Red/Blue wire) sets DTC 15 | | 27 | Shift Solenoid #1 | 12V when in "L" indicates proper function; open/short sets DTC 41 | | 28 | Shift Solenoid #2 | 12V in "L" or "2"; open/short sets DTC 42 | | 29 | Shift Solenoid #3 | Blue/Red wire sets DTC 43 | | 32 | / | 4.85V indicates a specific condition | | 16 | / | No signal on Brown/Red wire while cranking indicates a fault | | 29 | Shift Solenoid #3 | Blue/Red wire, fault code 43 |
: If you have recently re-wired or changed sensors, you can reset the ECU by disconnecting the negative battery terminal for 15-30 minutes.
A typical K6A ECU pinout (e.g., from an early 2000s Kei/WagonR) includes the following essential signals, mapped generally to 16-pin and 26-pin connectors: A. Power and Ground Direct battery connection for memory. +12V Ignition: Switched power when the key is on. suzuki k6a engine ecu pinout
| Pin | Signal | Description | |------|---------------------------|-------------------------------------| | B1 | Fuel pump relay control | ECU grounds to turn on fuel pump | | B2 | Check engine light (MIL) | Ground to illuminate CEL | | B3 | Main relay control | ECU grounds main EFI relay | | B4 | Cooling fan relay 1 | Fan low speed | | B5 | Cooling fan relay 2 | Fan high speed (if equipped) | | B6 | A/C compressor clutch relay | Engages AC compressor | | B7 | Wastegate solenoid (turbo) | Boost control duty | | B8 | O2 heater ground | Heater circuit ground | | B9 | Injector common +12V | From main relay (via resistor pack if external) | | B10 | +12V ignition switched | IG power (engine running/cranking) | | B11 | +12V main relay | Same as A13 (redundant) | | B12 | Power ground | Heavy ground for injectors/coils | | B13-24 | (may be unused or model-specific) | EGR temp, oil pressure switch, etc. |
Idle Speed Control Valve for maintaining a steady idle under load. Wiring for Standalone ECUs | Pin | Function | Signal / Condition
Clean ground reference point dedicated strictly to sensitive sensors. 2. Critical Engine Sensors (Inputs)
: Most K6A ECUs have a part number starting with 33920-XXXXX or 33910-XXXXX . Identifying this number is the most reliable way to find a matching pinout diagram on Scribd . +12V Ignition: Switched power when the key is on
Measures intake vacuum to calculate engine load.
Here are the best ways to track down the correct information for your specific ECU:
Often uses a 6+1 tooth trigger pattern on the cam.