Electronic Throttle Control System (ETCS)
WARNING: This page is about a different car, the 2002 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The ETCS may also be referred to as Electronic Throttle Control System-Intelligent (ETCS-I or ETCS-i).
For testing of throttle body and components, see THROTTLE BODY under IDLE CONTROL SYSTEM.