Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota Land Cruiser. 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 ECM location, see Figure. For ECM connector terminal view, see Figure. For fuel injector driver circuit wiring diagram, see Fig 14. For location of emission related components, see Figure.

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)

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Fig 2: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Step 5)

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Fig 3: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 6-7)

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Fig 4: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 8-9)

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Fig 5: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 10-13)

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Fig 6: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 14-17)

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Fig 7: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using Hand Held Tester (Steps 18-19)

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Fig 8: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Steps 1-3)

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Fig 9: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Step 4)

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Fig 10: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Steps 5-6)

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Fig 11: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Steps 7-8)

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Fig 12: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Steps 9-13)

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Fig 13: DTCs P0300 & P0301-P0308 Diagnostic Procedure Using OBD II Scan Tool (Steps 14-16)

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Fig 14: Fuel Injector Driver Circuit Wiring Diagram

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002