Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Read freeze frame data using the hand-held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected.
To aid in diagnosing a deteriorated catalytic converter it is recommended to first perform CONFIRMATION ENGINE RACING PATTERN .
For diagnosis and repair procedure, see Fig 1 & Fig 2 .
For testing of systems or components, see SYSTEM & COMPONENT TESTING - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.