Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Read freeze frame data using the hand-held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected.

For circuit wiring diagram, see Fig 1.

For diagnosis and repair procedure with Toyota hand-held tester or Enhanced OBD II scan tool, see Fig 2.

For diagnosis and repair procedure with generic OBD II scan tool, see Fig 3.

Engine Control Module (ECM) is located behind glove box. See Figure. For ECM connector terminal view, see Figure.

For location of camshaft timing OCV assembly, see Figure. For camshaft timing OCV assembly testing procedure, see Figure. For testing of systems or components, see BASIC DIAGNOSTIC PROCEDURES - V6 & V8 article or SYSTEM & COMPONENT TESTING - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.

Fig 1: Camshaft Position "A" Actuator Circuit Wiring Diagram (Bank 1 & 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTCs P0010 & P0020 Diagnostic Procedure Using Hand-Held Tester

Fig 3: DTCs P0010 & P0020 Diagnostic Procedure Using OBD II Scan Tool