For each ECU, there is a technical specification which provides an overview of the electronics and components of the ECU, including a list of connectors, pin outs, pin capabilities, flash codes, and so on. These technical specifications are available from the Windows Start button and from the following links.

Further information about ECUs, including simplified I/O schematics and mechanical drawings, can be downloaded from the website (registration or purchase of ECU required) or requested through OpenECU technical support as described in Appendix 10, Contact information.