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Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota RAV4. 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.

NOTE: In order to minimize time wasted diagnosing DTCs P0440 &/or P0442, it is recommended to perform "Confirmation Readiness Test" first to verify EVAP system readiness status and confirmation of DTC. See TEST DRIVE CONFIRMATION .

For diagnosis and repair procedure with Toyota Hand-held tester or an Enhanced OBD II scan tool, see Fig 1-Fig 9 .

For diagnosis and repair procedure with OBD II scan tool (Non Enhanced), see Fig 9-Fig 17 .

For EVAP emission system circuit wiring diagram, see Fig 18. For EVAP emission system component locations, see Fig 19.

When access to, or replacement of ECM is necessary, Engine Control Module (ECM) is located behind glove box. See Figure. For ECM connector terminal view, see Figure.

For vacuum or EVAP hose routing, see VACUUM DIAGRAMS article. For testing of systems or components, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For removal and installation of components, see REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article.

Fig 1: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 1-3)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 4-6)

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Fig 3: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 7-9)

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Fig 4: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 10-12)

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Fig 5: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 13-15)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 16-18)

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Fig 7: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 19-21)

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Fig 8: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 22-23)

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Fig 9: DTC P0440 & DTC P0442 Diagnostic Procedure Using Hand-Held Tester (Steps 24-25); Using OBD II Scan Tool (Steps 1-2)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 10: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 3-5)

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Fig 11: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 6-8)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 12: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 9-10)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 13: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 11-12)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 14: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 13-14)

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Fig 15: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 15-17)

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Fig 16: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 18-19)

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Fig 17: DTC P0440 & DTC P0442 Diagnostic Procedure Using OBD II Scan Tool (Steps 20-22)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 18: EVAP Emission System Circuit Wiring Diagram

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 19: Locating EVAP System Components

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002