Keyword 2000 Data Line
The Keyword protocols utilizes a single wire bi-directional data line between the modules 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 modules on the Keyword 2000 data line are:
^ Electronic Brake Traction Control Module (EBTCM)
^ Engine Control Module (ECM)
^ Transaxle Control Module (TCM)