Keyword 2000 Data Line
The Keyword protocols utilize a single wire bi-directional data line between the module and the scan tool. The message structure is a request and response arrangement. Keyword 2000 is used for scan tool diagnostics only. The modules do not exchange data on these systems.
The keyword 2000 serial data line:
- The keyword 2000 serial data line allows the following to communicate with the scan tool: The engine control module.
- The keyword 2000 serial data line allows a scan tool to communicate with this module for diagnosis and testing.