Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Using Toyota hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.
For circuit wiring diagram, diagnosis and repair procedure, see Fig 1. For combination meter circuit inspection procedure, see COMBINATION METER CIRCUIT INSPECTION .
For ECM location, see Figure. For ECM connector terminal view, see Figure.
To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For testing of systems or components, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For testing of combination meter, see appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. For testing of skid control ECU, see appropriate ANTI-LOCK/TRACTION CONTROL article in BRAKES. For removal and installation of components, see REMOVAL & INSTALLATION - 4-CYLINDER article.