Using Toyota Hand-Held Tester
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
See scan tool operator's manual for specific operating instructions. Connect scan tool to Data Link Connector No. 3 (DLC3) located under left side of instrument panel. See Fig 1. Follow prompts on scan tool to monitor cruise control ECU data. Use scan tool operator's manual for more information. Manufacturer does not provide any specific information on diagnosis of the cruise control system using a scan tool.