The dual CAN interface combined with the 30 I/O pins allows simultaneous monitoring of engine and transmission buses. The datasheet’s pinout guide is essential for wiring DB9 or OBD connectors.
| Pin # | Function | Type | Description | | :--- | :--- | :--- | :--- | | 1 | | Power | Main Battery Input (12V) | | 2 | GND | Power | Chassis Ground | | 3 | INJ_1 | Output | Injector Driver 1 (High Side) | | 4 | INJ_2 | Output | Injector Driver 2 (High Side) | | 5 | COIL_1 | Output | Ignition Coil 1 Trigger | | 6 | AN_MAP | Input | Manifold Absolute Pressure Sensor | | 7 | AN_TPS | Input | Throttle Position Sensor | | 8 | AN_MAT | Input | Manifold Air Temperature | | 9 | AN_CLT | Input | Coolant Temperature | | 10 | CRANK+ | Input | Crankshaft Position Sensor (+) | | 11 | CRANK- | Input | Crankshaft Position Sensor (-) | | 12 | CAM | Input | Camshaft Position Sensor | | 13 | CAN_H | Comm | CAN Bus High | | 14 | CAN_L | Comm | CAN Bus Low | | 15 | K_LINE | Comm | Diagnostic K-Line | | 16 | TACHO | Output | Tachometer Output | | 17 | CHECK_ENGINE | Output | MIL/Check Engine Lamp | | 18 | FUEL_PUMP | Output | Fuel Pump Relay (Low Side) | | 19 | FAN_RELAY | Output | Radiator Fan Relay (Low Side) | | 20 | V_REF_5V | Power | 5V Sensor Reference Output | | 21 | SEN_GND | Power | Sensor Ground Return | | 22-30 | NC/RES | N/A | Reserved / Not Connected | ecus datasheet 30 free
Deploying soil moisture and temperature sensors over long distances – the datasheet provides guidelines for cable length vs. I²C capacitance. The dual CAN interface combined with the 30
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Without a more specific part number or description, it's difficult to provide a direct link to an "ECUS Datasheet 30 Free". However, here are a few possibilities:
| Source | Type | Notes | |--------|------|-------| | | Official datasheets (free) | Limited to aftermarket ECUs (MS, Motronic Mxx). | | Electronics Repair Club | Community-submitted pinouts | Search “ECU pinout 30 pin”. | | ProgTech or ECU Connections | Free pinout guides | Often for 30‑pin JECS or Mitsubishi ECUs. | | GitHub – openvehicles/opendbc | Reverse-engineered ECU signals | Focuses on CAN bus, not legacy 30‑pin. | | Auto Repair Forums (e.g., Bimmerforums, MG-Rover.org) | User-shared datasheets | Search for “ML4.1 datasheet” or “M1.5 pinout”. |