Inspection Procedure
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Read freeze frame date using the hand-held tester or the OBD II scan tool. Freeze frame date records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, It the engine was warmed up or not, if the air-fuel ratio was lean of rich, and other data from time the malfunction occurred.
Replace throttle position sensor (See THROTTLE BODY ).