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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Engine Control System Self Diagnostics) >> Diagnostic Tests >> DTC P0300, DTC P0301, DTC P0302, DTC P0303, DTC P0304, DTC P0305, DTC P0306, DTC P0307 Or DTC P0308 >> Diagnosis & Repair

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 7 .

For diagnosis and repair procedure with generic OBD II scan tool, see Fig 8-Fig 13 .

When prompted to perform confirmation driving pattern, see TEST DRIVE CONFIRMATION .

For locating emission related components, see Figure.

For ECM location, see Figure. For ECM connector view, see Figure. For fuel injector driver circuit wiring diagram, see Fig 14. For vacuum or EVAP hose routing, see VACUUM DIAGRAMS article. For testing of systems or components, see BASIC DIAGNOSTIC PROCEDURES - V6 & V8 article or SYSTEM & COMPONENT TESTING - V6 & V8 article. For adjustments, see ON-VEHICLE ADJUSTMENTS - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.

Fig 1: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 1-4)
G00241833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Step 5)
G00241834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 6-7)
G00241835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 8-9)
G00241836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 10-13)
G00241837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 6: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 14-17)
G00241838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 7: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 18-19)
G00241839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 8: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Steps 1-3
G00241840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 9: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Step 4
G00241841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 10: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Steps 5-6
G00241842Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 11: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Steps 7-8
G00241843Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 12: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Steps 9-13
G00241844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 13: DTCs P0300 & P0301-P0308 Diagnostic Procedure (OBD II Scan Tool) Steps 14-16
G00241845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 14: Fuel Injector Driver Circuit Wiring Diagram
G00241846Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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