Diagnostic Aids
WARNING: This page is about a different car, the 2003 Lexus LS 430. 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, as freeze frame records the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining whether vehicle was running or stopped, the engine was warmed up or not, or the air-fuel ratio was lean at the time of the malfunction.