| Pin No. | Function | Description | | :--- | :--- | :--- | | 1 | | Cylinder 1 & 4 (or 1 depending on coil pack) | | 2 | Ignition Coil 2 | Cylinder 2 & 3 | | 3 | Injector 1 | Cylinder 1 | | 4 | Injector 2 | Cylinder 2 | | 5 | Injector 3 | Cylinder 3 | | 6 | Injector 4 | Cylinder 4 | | 7 | Tachometer | Engine RPM output to dashboard | | 8 | Stop Light Switch | Brake pedal signal | | 9 | A/C Request | Air conditioning activation signal | | 10 | Vehicle Speed | Speedometer signal | | 11 | Power Ground | ECU Main Ground | | 12 | Battery Positive | Switched +12V (via Main Relay) | | 13 | Battery Positive | Switched +12V (via Main Relay) | | 14 | Battery Positive | Switched +12V (via Main Relay) | | 15 | Clutch Switch | (Manual transmission only) | | 16 | Fan Control | Cooling fan relay trigger | | 17 | Check Engine Lamp | MIL (Malfunction Indicator Lamp) | | 18 | Ground | Sensor Ground / ECU Ground | | 19 | Main Relay Control | Ground trigger for Main Relay coil | | 20 | EVAP Valve | Charcoal canister purge valve | | 21 | Fuel Pump Relay | Ground trigger for Fuel Pump Relay | | 22 | AC Compressor | Clutch engagement relay control | | 23 | Idle Air Control | (If applicable, usually Stepper motor) |
The interface for these drives is often modular. Users can swap out different "interface modules" depending on their control architecture (such as SERCOS, DeviceNet, or generic indexing). A common misconception in online forums is the existence of a singular "ME745" connector. In reality, the term is often a conflation or a specific internal part number for the multi-pin interface headers used on the front face of the drive. These connectors—typically high-density D-subminiature types or circular military-spec connectors—carry the vital signals: enable inputs, drive ready outputs, analog velocity commands (±10V), and encoder feedback channels. me745 pinout free
Since "ME745" is ambiguous, follow this step-by-step forensic approach: | Pin No