: Detailed layouts of the Printed Circuit Board (PCB) inside the ECU, which are typically restricted by manufacturers. Electronic Component Identification
: A highly active community for open-source ECU tuning. Users often share detailed guides on hardware modifications, such as unbricking and reflashing Nissan ECUs Specialized Forums (RX8Club, Team-BHP) ecus datasheet 30 free
If the archive is down, reply to this thread and I’ll mirror the index (just the list of ECU part numbers, not the files). : Detailed layouts of the Printed Circuit Board
Specialized Facebook groups for ECU Repair and Programming often share "IMMO OFF" files and memory diagrams for technicians. If you tell me the specific ECU model (e.g., Bosch EDC17C64 Go to product viewer dialog for this item. Specialized Facebook groups for ECU Repair and Programming
| 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 |
While proprietary datasheets are difficult to obtain, there are legitimate avenues for finding high-quality, free information.