Diagnostic Aids
WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Read freeze frame data using hand-held tester or OBD II scan tool. Because freeze frame records engine conditions when malfunction is detected, it is useful to determine whether vehicle was running or stopped, engine was warmed up or not, air-fuel ratio was lean or rich, etc. at time of malfunction.