Standard Corporate Protocol (SCP)

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SCP is a communication language protocol based on SAE J1850 and is used by Ford Motor Company for exchanging bi-directional message (signals) between electronic modules. Two or more signals can be sent over one SCP network circuit. Ford's SCP communications network operates at 41.6kB/sec (kilobytes per second).

Included in these messages is diagnostic data that is output over the BUS + and BUS - lines to the data link connector (DLC). Powertrain control module (PCM) connection to the DLC is typically done with a 2-wire, twisted pair cable used for network interconnection. The diagnostic data such as self-test or PIDs can be accessed with a diagnostic tool. For additional information on diagnostic tool equipment, refer to DIAGNOSTIC METHODS .