(Rev 2006/05) Provides 3000 and 4000 Product Family transmission troubleshooting information including description of the WTEC III electronic control system components, diagnostic codes and system responses to faults. Wire, terminal, and connector repair are also included. Special instructions for required service tools and equipment are not included in this manual. -- Transmission not in production. For current production toubleshooting manual for the 3000 and 4000 Product Family transmission with 4th Gen Controls, refer to TS3989EN.