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Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota Sequoia. 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 diagnosis and repair procedure with Toyota hand-held tester or Enhanced OBD II scan tool, see Fig 1-Fig 21 .

For diagnosis and repair procedure with generic OBD II scan tool, see Fig 22-Fig 30 .

For ECM location, see Figure. For ECM connector view, see Figure. For EVAP system circuit wiring diagram, see Fig 31. For vacuum or EVAP hose routing, see VACUUM DIAGRAMS article. 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.

Fig 1: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 1-3)

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Fig 2: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 4-6)

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Fig 3: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 7-9)

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Fig 4: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 10-12)

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Fig 5: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 13-15)

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Fig 6: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 16-18)

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Fig 7: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 19-20)

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Fig 8: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 21-22)

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Fig 9: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 23-24)

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Fig 10: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 25-27)

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Fig 11: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 28-30)

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Fig 12: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 31-33)

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Fig 13: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 34-36)

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Fig 14: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 37-39)

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Fig 15: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 40-41)

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Fig 16: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 42-43)

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Fig 17: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 44-46)

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Fig 18: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 47-49)

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Fig 19: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 50-52)

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Fig 20: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 53-55)

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Fig 21: DTCs P0441 & P0446 Diagnostic Procedure Using Hand Held Tester (Steps 56-58)

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Fig 22: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 1-3)

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Fig 23: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 4-6)

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Fig 24: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 7-9)

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Fig 25: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 10-11)

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Fig 26: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 12-13)

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Fig 27: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 14-15)

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Fig 28: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 16-17)

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Fig 29: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 18-19)

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Fig 30: DTCs P0441 & P0446 Diagnostic Procedure (OBD II Scan Tool) (Steps 20-22)

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Fig 31: EVAP Emission System Circuit Wiring Diagram

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