Diagnosis & Repair

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.

For diagnosis and repair procedure with generic OBD II scan tool, see Fig 2.

For access to, or replacement of ECM, Engine Control Module (ECM) is located behind glove box. See Figure. For ECM connector view, see Figure. For circuit wiring diagram, see Fig 3. For location of camshaft timing OCV assembly, see Fig 4. For camshaft timing OCV assembly testing procedure, see Fig 5. 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 P0010 & P0020 Diagnostic Procedure Using Toyota Hand-Held Tester

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTCs P0010 & P0020 Diagnostic Procedure Using OBD II Scan Tool

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: VVT OCV Circuit Wiring Diagram

Fig 4: Locating Variable Valve Timing Oil Control Valve

Fig 5: Inspecting Camshaft Timing OCV Assembly