Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- If DTC P0441 (purge flow), P0446 (VSV for CCV or VSV for pressure switching valve), P0451, P0452 or P0453 (evaporative pressure sensor) is output with DTC P0442 or P0456, first trouble shoot DTC P0441, P0446, P0451, P0452 or P0453. If no malfunction is detected, trouble shoot DTC P0442 or P0456 next.
- If different DTCs that are related to different systems are output simultaneously while terminal E2 is used s a ground terminal, terminal E2 may be open.
- Ask the customer whether, after the MIL came on, the customer found the fuel tank cap loose and tightened it. Also ask the customer whether the fuel tank cap was loose when refuelling. If the fuel tank cap was loose, it was the cause of the DTC. If the fuel tank cap was not loose or if the customer was not sure if it was loose, trouble shoot according to the following procedure.
- Read freeze frame data using OBD II scan tool or hand-held tester. Because freeze frame records the engine conditions when the malfunction is detected. When trouble shooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.
- When the ENGINE RUN TIME in the freeze frame data is less than 200 seconds, carefully check the vapor pressure sensor.
For wiring diagram, see Fig 1. For diagnosis and repair with hand-held tester, see Fig 2-Fig 9 . For diagnosis and repair with OBD II scan tool, see Fig 10-Fig 16 .
For vacuum or EVAP hose routing, see VACUUM DIAGRAMS article. For testing of components, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For removal and installation of components, see REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article. To identify circuits referenced in testing, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article. To check ECM inputs and outputs, see PIN VOLTAGE CHARTS article. For ECM location, see ENGINE CONTROL MODULE LOCATION under SELF-DIAGNOSTIC SYSTEM.